http://wiki.newmars.com/api.php?action=feedcontributions&feedformat=atom&user=Mark+Friedenbach 2026-05-19T08:28:49Z User contributions MediaWiki 1.29.1 http://wiki.newmars.com/index.php?title=Hab_Consumable_Masses_in_Mars_Direct&diff=890 2010-03-22T06:36:31Z

<p>Mark Friedenbach: /* Whole Food */</p> <hr /> <div>This is the page for estimating the masses of consumables in Mars Direct as part of the Tsiolkovsky Compendium Project. On page 92 of his book [[The Case For Mars]], Zubrin estimates them to be as follows:<br /> <br /> *Consumables: 7.0 Tonnes consisting of (TCFM page 92):<br /> **Oxygen: 160 kg total (1 kg/man*day at 80% reuse)<br /> **Dry Food: 1600 kg total (.5 kg/man*day at 0% reuse)<br /> **Whole Food: 3200 kg total (1 kg/man*day at 0% reuse)<br /> **Potable Water: 0 kg total [?] (4 kg/man*day at 80% reuse)<br /> **Wash Water: 2080 kg total (26 kg/man*day at 90% reuse)<br /> <br /> =Oxygen=<br /> <br /> ==Consumption Rate==<br /> <br /> On the space shuttle, Oxygen is used at a rate of .8 kg per person*day [3]. Zubrin&#039;s 1 kg per day seems reasonable, especially considering that astronauts will be using this Oxygen at a high rate. This reference [1] suggests that under a high metabolic load, such as that will probably exist for astronauts doing work on Mars, .96 kg per day is more reasonable. 1 kg per day is a good starting point considering margin necessities and losses.<br /> <br /> ==Reuse Rate==<br /> <br /> Based on technologies pioneered on the ISS, 90-95% closure for oxygen seems reasonable [citation needed]. Assuming the lower number, that is 0.1 kg per day of oxygen. Over 600 days with 4 people, that is 240 kg. With 95% closure, that is 120 kg of oxygen. An intermediate value falls at 180 kg, right near Zubrin&#039;s 160 kg.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> Based on the above, a figure of 180 kg of Oxygen is a reasonable estimate.<br /> <br /> =Dry Food=<br /> ==Consumption Rate==<br /> <br /> On the ISS, each crewmember needs 1.77 kg per day of dried food [2]. <br /> <br /> ==Reuse rate==<br /> <br /> Zubrin assumes a 0% reuse rate for food. This basically assumes no regeneration of food, and since food is basically not regenerated on any system, there is no reason this should change unless significant farming is to be implemented. In the opinion of the writer ([[user:jumpboy11j|Jumpboy11j]]), farming would be experimental as opposed to a staple in the mission, and for this reason it is unwise to count on farming to provide a significant part of the food allowance.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> 1.77 kilograms per day over 600 days is a total of 1,062 kg per person over the course of the mission. With the standard 4 person Mars Direct crew, that is a total mass of 4,248 kg of food. Zubrin uses the much lower estimate of just 1,000 kg total based off .5 kg per day. However Zubrin also includes whole (non-dehydrated) food in his launch manifest, which presumably makes up the difference (see the discussion of whole food below).<br /> <br /> Based on the minimum possible energy content for totally dry food of 4 calories per gram, and a daily calorie intake of 2,500 calories, which is on the high side if the crew is mixed-gender [http://www.fatfreekitchen.com/weightloss/weightloss.html], each crewmember will need .625 kg/day of food. Since the food will also contain significant amounts of fats and proteins which have a higher specific energy, .5 kg/person per day for totally dehydrated food is theoretically possible. However, 1.77 kg per person*day is more realistic given that is what is used in real life.<br /> <br /> =Whole Food=<br /> <br /> == Consumption Rate ==<br /> <br /> Reference [2] does not mention whole food, so presumably none is consumed on the ISS. However resupply missions do bring whole food with them to boost morale, so presumably we should be able to find some numbers.<br /> <br /> == Reuse Rate ==<br /> <br /> Not relevant (see discussion of dry food).<br /> <br /> == Total Mass for 600 day Mission ==<br /> <br /> One ISS crew member consumes in one day 1.77 kg of dry food (with 0.8 kg of water to hydrate it), and 1.62 kg of drinking water. One Mars Direct crew member consumes in one day 0.5 kg dried food, 1.0 kg of whole food, and 4.0 kg of drinking water.<br /> <br /> If the same water/dried food mass ratios are used for Mars Direct as for the ISS, then 0.3 kg water is required to hydrate the dried food [0.5 kg MD dried food * (0.8 kg ISS water / 1.77 kg ISS dried food), conservatively rounding up to significant figures]. This totals to 1.8 kg [0.3 kg water + 0.5 kg dried food + 1.0 kg whole food] of whole food per crew member per day. As an ISS crew member consumes 2.6 kg of whole food per day (1.77 kg dried food + 0.8 kg water], Mars Direct&#039;s 1.8 kg is suspiciously low (67% of ISS consumption levels).<br /> <br /> For a conservative estimate, ISS levels of food consumption should be assumed (which includes only dry food). [[The Case for Mars]] presents good arguments for the inclusion of whole food, however, so further research should be done find accurate assessments of whole food requirements and consumptions rates on real space missions.<br /> <br /> =Potable Water=<br /> <br /> =Washwater=<br /> <br /> =References=<br /> <br /> *1. [http://www.marsjournal.org/contents/2006/0005/files/rapp_mars_2006_0005.pdf Commercial Report-pdf (Goes to acrobat file: 373 KB)]<br /> *2. [http://www.nasa.gov/mission_pages/station/expeditions/expedition19/earthday_recycle.html For use of resources]<br /> *3. [http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_eclss.html#sts_eclss NASA document on Space Shuttle Life Support]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Hab_Consumable_Masses_in_Mars_Direct&diff=889 2010-03-22T06:06:29Z

<p>Mark Friedenbach: can&#039;t foget about whole food!</p> <hr /> <div>This is the page for estimating the masses of consumables in Mars Direct as part of the Tsiolkovsky Compendium Project. On page 92 of his book [[The Case For Mars]], Zubrin estimates them to be as follows:<br /> <br /> *Consumables: 7.0 Tonnes consisting of (TCFM page 92):<br /> **Oxygen: 160 kg total (1 kg/man*day at 80% reuse)<br /> **Dry Food: 1600 kg total (.5 kg/man*day at 0% reuse)<br /> **Whole Food: 3200 kg total (1 kg/man*day at 0% reuse)<br /> **Potable Water: 0 kg total [?] (4 kg/man*day at 80% reuse)<br /> **Wash Water: 2080 kg total (26 kg/man*day at 90% reuse)<br /> <br /> =Oxygen=<br /> <br /> ==Consumption Rate==<br /> <br /> On the space shuttle, Oxygen is used at a rate of .8 kg per person*day [3]. Zubrin&#039;s 1 kg per day seems reasonable, especially considering that astronauts will be using this Oxygen at a high rate. This reference [1] suggests that under a high metabolic load, such as that will probably exist for astronauts doing work on Mars, .96 kg per day is more reasonable. 1 kg per day is a good starting point considering margin necessities and losses.<br /> <br /> ==Reuse Rate==<br /> <br /> Based on technologies pioneered on the ISS, 90-95% closure for oxygen seems reasonable [citation needed]. Assuming the lower number, that is 0.1 kg per day of oxygen. Over 600 days with 4 people, that is 240 kg. With 95% closure, that is 120 kg of oxygen. An intermediate value falls at 180 kg, right near Zubrin&#039;s 160 kg.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> Based on the above, a figure of 180 kg of Oxygen is a reasonable estimate.<br /> <br /> =Dry Food=<br /> ==Consumption Rate==<br /> <br /> On the ISS, each crewmember needs 1.77 kg per day of dried food [2]. <br /> <br /> ==Reuse rate==<br /> <br /> Zubrin assumes a 0% reuse rate for food. This basically assumes no regeneration of food, and since food is basically not regenerated on any system, there is no reason this should change unless significant farming is to be implemented. In the opinion of the writer ([[user:jumpboy11j|Jumpboy11j]]), farming would be experimental as opposed to a staple in the mission, and for this reason it is unwise to count on farming to provide a significant part of the food allowance.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> 1.77 kilograms per day over 600 days is a total of 1,062 kg per person over the course of the mission. With the standard 4 person Mars Direct crew, that is a total mass of 4,248 kg of food. Zubrin uses the much lower estimate of just 1,000 kg total based off .5 kg per day. However Zubrin also includes whole (non-dehydrated) food in his launch manifest, which presumably makes up the difference (see the discussion of whole food below).<br /> <br /> Based on the minimum possible energy content for totally dry food of 4 calories per gram, and a daily calorie intake of 2,500 calories, which is on the high side if the crew is mixed-gender [http://www.fatfreekitchen.com/weightloss/weightloss.html], each crewmember will need .625 kg/day of food. Since the food will also contain significant amounts of fats and proteins which have a higher specific energy, .5 kg/person per day for totally dehydrated food is theoretically possible. However, 1.77 kg per person*day is more realistic given that is what is used in real life.<br /> <br /> =Whole Food=<br /> <br /> =Potable Water=<br /> <br /> =Washwater=<br /> <br /> =References=<br /> <br /> *1. [http://www.marsjournal.org/contents/2006/0005/files/rapp_mars_2006_0005.pdf Commercial Report-pdf (Goes to acrobat file: 373 KB)]<br /> *2. [http://www.nasa.gov/mission_pages/station/expeditions/expedition19/earthday_recycle.html For use of resources]<br /> *3. [http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_eclss.html#sts_eclss NASA document on Space Shuttle Life Support]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Hab_Consumable_Masses_in_Mars_Direct&diff=888 2010-03-22T05:51:12Z

<p>Mark Friedenbach: /* Reuse Rate */</p> <hr /> <div>This is the page for estimating the masses of consumables in Mars Direct as part of the Tsiolkovsky Compendium Project. On page 92 of his book [[The Case For Mars]], Zubrin estimates them to be as follows:<br /> <br /> *Consumables: 7.0 Tonnes consisting of (TCFM page 92):<br /> **Oxygen: 160 kg total (1 kg/man*day at 80% reuse)<br /> **Dry Food: 1600 kg total (.5 kg/man*day at 0% reuse)<br /> **Whole Food: 3200 kg total (1 kg/man*day at 0% reuse)<br /> **Potable Water: 0 kg total [?] (4 kg/man*day at 80% reuse)<br /> **Wash Water: 2080 kg total (26 kg/man*day at 90% reuse)<br /> <br /> =Oxygen=<br /> <br /> ==Consumption Rate==<br /> <br /> On the space shuttle, Oxygen is used at a rate of .8 kg per person*day [3]. Zubrin&#039;s 1 kg per day seems reasonable, especially considering that astronauts will be using this Oxygen at a high rate. This reference [1] suggests that under a high metabolic load, such as that will probably exist for astronauts doing work on Mars, .96 kg per day is more reasonable. 1 kg per day is a good starting point considering margin necessities and losses.<br /> <br /> ==Reuse Rate==<br /> <br /> Based on technologies pioneered on the ISS, 90-95% closure for oxygen seems reasonable [citation needed]. Assuming the lower number, that is 0.1 kg per day of oxygen. Over 600 days with 4 people, that is 240 kg. With 95% closure, that is 120 kg of oxygen. An intermediate value falls at 180 kg, right near Zubrin&#039;s 160 kg.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> Based on the above, a figure of 180 kg of Oxygen is a reasonable estimate.<br /> <br /> =Dry Food=<br /> ==Consumption Rate==<br /> <br /> On the ISS, each crewmember needs 1.77 kg per day of dried food [2]. <br /> <br /> ==Reuse rate==<br /> <br /> Zubrin assumes a 0% reuse rate for food. This basically assumes no regeneration of food, and since food is basically not regenerated on any system, there is no reason this should change unless significant farming is to be implemented. In the opinion of the writer ([[user:jumpboy11j|Jumpboy11j]]), farming would be experimental as opposed to a staple in the mission, and for this reason it is unwise to count on farming to provide a significant part of the food allowance.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> 1.77 kilograms per day over 600 days is a total of 1,062 kg per person over the course of the mission. With the standard 4 person Mars Direct crew, that is a total mass of 4,248 kg of food. Zubrin uses the much lower estimate of just 1,000 kg total based off .5 kg per day. This is a huge discrepancy, and appears to show that Zubrin is being overly optimistic. On the other hand, based on the minimum possible energy content for totally dry food of 4 calories per gram, and a daily calorie intake of 2,500 calories, which is on the high side if the crew is mixed-gender [http://www.fatfreekitchen.com/weightloss/weightloss.html], each crewmember will need .625 kg/day of food. Since the food will also contain significant amounts of fats and proteins which have a higher specific energy, .5 kg/person per day for totally dehydrated food is theoretically possible. However, 1.77 kg per person*day is more realistic given that is what is used in real life.<br /> <br /> =Whole Food=<br /> <br /> =Potable Water=<br /> <br /> =Washwater=<br /> <br /> =References=<br /> <br /> *1. [http://www.marsjournal.org/contents/2006/0005/files/rapp_mars_2006_0005.pdf Commercial Report-pdf (Goes to acrobat file: 373 KB)]<br /> *2. [http://www.nasa.gov/mission_pages/station/expeditions/expedition19/earthday_recycle.html For use of resources]<br /> *3. [http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_eclss.html#sts_eclss NASA document on Space Shuttle Life Support]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=874 2010-03-20T07:39:18Z

<p>Mark Friedenbach: /* Consumables */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ==Consumables==<br /> <br /> {|<br /> |+Consumable Requirements for Mars Direct Mission with Crew of Four<br /> ! Item !! Oxygen !! Dry-food !! Whole-food !! Potable-water !! Wash-water !! Total<br /> |-<br /> | Need/man-day<br /> | align=right | 1.0<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 4.0<br /> | align=right | 26.0<br /> ! align=right | 32.5<br /> |-<br /> | Fraction recycled (kg)<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0.0<br /> | align=right | 0.8<br /> | align=right | 0.9<br /> ! align=right | 0.87<br /> |-<br /> | Wasted/man-day<br /> | align=right | 0.2<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 2.6<br /> ! align=right | 4.3<br /> |-<br /> | ERV Reqs 200 days in (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 200 days out (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 600 days surface (kg)<br /> | align=right | 0<br /> | align=right | 1200<br /> | align=right | 2400<br /> | align=right | 0<br /> | align=right | 0<br /> ! align=right | 3600<br /> |-<br /> | Hab Reqs Total (kg)<br /> | align=right | 160<br /> | align=right | 1600<br /> | align=right | 3200<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 7400<br /> |}<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=873 2010-03-20T07:39:00Z

<p>Mark Friedenbach: /* Consumables */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Allocations for Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Allocations for Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab (Habitation Module)===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ===Consumables===<br /> <br /> {|<br /> |+Consumable Requirements for Mars Direct Mission with Crew of Four<br /> ! Item !! Oxygen !! Dry-food !! Whole-food !! Potable-water !! Wash-water !! Total<br /> |-<br /> | Need/man-day<br /> | align=right | 1.0<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 4.0<br /> | align=right | 26.0<br /> ! align=right | 32.5<br /> |-<br /> | Fraction recycled (kg)<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0.0<br /> | align=right | 0.8<br /> | align=right | 0.9<br /> ! align=right | 0.87<br /> |-<br /> | Wasted/man-day<br /> | align=right | 0.2<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 2.6<br /> ! align=right | 4.3<br /> |-<br /> | ERV Reqs 200 days in (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 200 days out (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 600 days surface (kg)<br /> | align=right | 0<br /> | align=right | 1200<br /> | align=right | 2400<br /> | align=right | 0<br /> | align=right | 0<br /> ! align=right | 3600<br /> |-<br /> | Hab Reqs Total (kg)<br /> | align=right | 160<br /> | align=right | 1600<br /> | align=right | 3200<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 7400<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=872 2010-03-20T07:38:16Z

<p>Mark Friedenbach: /* Consumables */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Allocations for Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Allocations for Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab (Habitation Module)===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ===Consumables===<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Oxygen !! Dry-food !! Whole-food !! Potable-water !! Wash-water !! Total<br /> |-<br /> | Need/man-day<br /> | align=right | 1.0<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 4.0<br /> | align=right | 26.0<br /> ! align=right | 32.5<br /> |-<br /> | Fraction recycled (kg)<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0.0<br /> | align=right | 0.8<br /> | align=right | 0.9<br /> ! align=right | 0.87<br /> |-<br /> | Wasted/man-day<br /> | align=right | 0.2<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 2.6<br /> ! align=right | 4.3<br /> |-<br /> | ERV Reqs 200 days in (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 200 days out (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 600 days surface (kg)<br /> | align=right | 0<br /> | align=right | 1200<br /> | align=right | 2400<br /> | align=right | 0<br /> | align=right | 0<br /> ! align=right | 3600<br /> |-<br /> | Hab Reqs Total (kg)<br /> | align=right | 160<br /> | align=right | 1600<br /> | align=right | 3200<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 7400<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=871 2010-03-20T07:37:57Z

<p>Mark Friedenbach: /* Consumables */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ==Consumables==<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Oxygen !! Dry-food !! Whole-food !! Potable-water !! Wash-water !! Total<br /> |-<br /> | Need/man-day<br /> | align=right | 1.0<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 4.0<br /> | align=right | 26.0<br /> ! align=right | 32.5<br /> |-<br /> | Fraction recycled (kg)<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0.0<br /> | align=right | 0.8<br /> | align=right | 0.9<br /> ! align=right | 0.87<br /> |-<br /> | Wasted/man-day<br /> | align=right | 0.2<br /> | align=right | 0.5<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 2.6<br /> ! align=right | 4.3<br /> |-<br /> | ERV Reqs 200 days in (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 200 days out (kg)<br /> | align=right | 160<br /> | align=right | 400<br /> | align=right | 800<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 3440<br /> |-<br /> | Hab Reqs 600 days surface (kg)<br /> | align=right | 0<br /> | align=right | 1200<br /> | align=right | 2400<br /> | align=right | 0<br /> | align=right | 0<br /> ! align=right | 3600<br /> |-<br /> | Hab Reqs Total (kg)<br /> | align=right | 160<br /> | align=right | 1600<br /> | align=right | 3200<br /> | align=right | 0<br /> | align=right | 2080<br /> ! align=right | 7400<br /> |}<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=870 2010-03-20T07:29:58Z

<p>Mark Friedenbach: /* Figures Suggested by Zubrin */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ==Consumables==<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Need/man-day !! Fraction recycled (kg) !! Wasted/man-day !! ERV Reqs 200 days in (kg) !! Hab Reqs 200 days out (kg) !! Hab Reqs 600 days surface (kg) !! Hab Reqs Total (kg)<br /> |-<br /> | Oxygen<br /> | align=right | 1.0<br /> | align=right | 0.8<br /> | align=right | 0.2<br /> | align=right | 160<br /> | align=right | 160<br /> | align=right | 0<br /> | align=right | 160<br /> |-<br /> | Dry food<br /> | align=right | 0.5<br /> | align=right | 0.0<br /> | align=right | 0.5<br /> | align=right | 400<br /> | align=right | 400<br /> | align=right | 1200<br /> | align=right | 1600<br /> |-<br /> | Whole food<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 1.0<br /> | align=right | 800<br /> | align=right | 800<br /> | align=right | 2400<br /> | align=right | 3200<br /> |-<br /> | Potable water<br /> | align=right | 4.0<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> |-<br /> | Wash water<br /> | align=right | 26.0<br /> | align=right | 0.9<br /> | align=right | 2.6<br /> | align=right | 2080<br /> | align=right | 2080<br /> | align=right | 0<br /> | align=right | 2080<br /> |-<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |-<br /> ! Total<br /> ! align=right | 32.5<br /> ! align=right | 0.87<br /> ! align=right | 4.3<br /> ! align=right | 3440<br /> ! align=right | 3440<br /> ! align=right | 3600<br /> ! align=right | 7400<br /> |}<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=869 2010-03-20T07:29:09Z

<p>Mark Friedenbach: /* ERV (Earth Return Vehicle) */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=868 2010-03-20T07:28:57Z

<p>Mark Friedenbach: /* ERV (Earth Return Vehicle) */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=867 2010-03-20T07:28:36Z

<p>Mark Friedenbach: /* Hab (Habitation Module) */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Allocations for Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Allocations for Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab (Habitation Module)===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ===Consumables===<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Need/man-day !! Fraction recycled (kg) !! Wasted/man-day !! ERV Reqs 200 days in (kg) !! Hab Reqs 200 days out (kg) !! Hab Reqs 600 days surface (kg) !! Hab Reqs Total (kg)<br /> |-<br /> | Oxygen<br /> | align=right | 1.0<br /> | align=right | 0.8<br /> | align=right | 0.2<br /> | align=right | 160<br /> | align=right | 160<br /> | align=right | 0<br /> | align=right | 160<br /> |-<br /> | Dry food<br /> | align=right | 0.5<br /> | align=right | 0.0<br /> | align=right | 0.5<br /> | align=right | 400<br /> | align=right | 400<br /> | align=right | 1200<br /> | align=right | 1600<br /> |-<br /> | Whole food<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 1.0<br /> | align=right | 800<br /> | align=right | 800<br /> | align=right | 2400<br /> | align=right | 3200<br /> |-<br /> | Potable water<br /> | align=right | 4.0<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> |-<br /> | Wash water<br /> | align=right | 26.0<br /> | align=right | 0.9<br /> | align=right | 2.6<br /> | align=right | 2080<br /> | align=right | 2080<br /> | align=right | 0<br /> | align=right | 2080<br /> |-<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |-<br /> ! Total<br /> ! align=right | 32.5<br /> ! align=right | 0.87<br /> ! align=right | 4.3<br /> ! align=right | 3440<br /> ! align=right | 3440<br /> ! align=right | 3600<br /> ! align=right | 7400<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=866 2010-03-20T07:28:19Z

<p>Mark Friedenbach: /* Hab (Habitation Module) */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Allocations for Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Allocations for Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ===Consumables===<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Need/man-day !! Fraction recycled (kg) !! Wasted/man-day !! ERV Reqs 200 days in (kg) !! Hab Reqs 200 days out (kg) !! Hab Reqs 600 days surface (kg) !! Hab Reqs Total (kg)<br /> |-<br /> | Oxygen<br /> | align=right | 1.0<br /> | align=right | 0.8<br /> | align=right | 0.2<br /> | align=right | 160<br /> | align=right | 160<br /> | align=right | 0<br /> | align=right | 160<br /> |-<br /> | Dry food<br /> | align=right | 0.5<br /> | align=right | 0.0<br /> | align=right | 0.5<br /> | align=right | 400<br /> | align=right | 400<br /> | align=right | 1200<br /> | align=right | 1600<br /> |-<br /> | Whole food<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 1.0<br /> | align=right | 800<br /> | align=right | 800<br /> | align=right | 2400<br /> | align=right | 3200<br /> |-<br /> | Potable water<br /> | align=right | 4.0<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> |-<br /> | Wash water<br /> | align=right | 26.0<br /> | align=right | 0.9<br /> | align=right | 2.6<br /> | align=right | 2080<br /> | align=right | 2080<br /> | align=right | 0<br /> | align=right | 2080<br /> |-<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |-<br /> ! Total<br /> ! align=right | 32.5<br /> ! align=right | 0.87<br /> ! align=right | 4.3<br /> ! align=right | 3440<br /> ! align=right | 3440<br /> ! align=right | 3600<br /> ! align=right | 7400<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=865 2010-03-20T07:27:49Z

<p>Mark Friedenbach: /* Hab (Habitation Module) */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab (Habitation Module)==<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: 28.6 Tonnes<br /> *ERV Cabin Total: 11.5 Tonnes<br /> **ERV cabin structure: 3.0 tonnes<br /> **Life support System: 1.0 tonnes<br /> **Consumables: 3.4 tonnes<br /> **Electrical Power (5 kWe Solar) 1.0 tonnes<br /> **Reaction Control System: .5 tonnes<br /> **Communications and Information Management: .1 tonne<br /> **Furniture and Interior: .5 tonnes<br /> **EVA suits (4): .4 tonnes<br /> **Spares and Margin (16%): 1.6 tonnes<br /> *Aeroshell: 1.8 tonnes<br /> *Light Truck: .5 Tonnes<br /> *Hydrogen Feedstock: 6.3 Tonnes<br /> *ERV Propulsion Stages: 4.5 tonnes<br /> *Propellant Production Plant: .5 tonnes<br /> *Power Reactor (80 kWe): 3.5 tonnes<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=864 2010-03-20T07:27:31Z

<p>Mark Friedenbach: /* Hab */</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ===Hab (Habitation Module)===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: 28.6 Tonnes<br /> *ERV Cabin Total: 11.5 Tonnes<br /> **ERV cabin structure: 3.0 tonnes<br /> **Life support System: 1.0 tonnes<br /> **Consumables: 3.4 tonnes<br /> **Electrical Power (5 kWe Solar) 1.0 tonnes<br /> **Reaction Control System: .5 tonnes<br /> **Communications and Information Management: .1 tonne<br /> **Furniture and Interior: .5 tonnes<br /> **EVA suits (4): .4 tonnes<br /> **Spares and Margin (16%): 1.6 tonnes<br /> *Aeroshell: 1.8 tonnes<br /> *Light Truck: .5 Tonnes<br /> *Hydrogen Feedstock: 6.3 Tonnes<br /> *ERV Propulsion Stages: 4.5 tonnes<br /> *Propellant Production Plant: .5 tonnes<br /> *Power Reactor (80 kWe): 3.5 tonnes<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Allocations_for_Mars_Direct&diff=862 2010-03-20T07:26:27Z

<p>Mark Friedenbach: Mass Components of Mars Direct moved to Mass Allocations for Mars Direct: Match the terminology of Case for Mars.</p> <hr /> <div>On page 92 and 93 of Zubrin&#039;s book, [[The Case For Mars]], he gives specific mass estimates for each component of his proposed [[Mars Direct]] Mission. These figures are widely disputed, and are given together as a whole here.<br /> <br /> =Figures Suggested by Zubrin=<br /> ==Hab==<br /> <br /> Total Mass: 25.2 Tonnes<br /> *Hab Structure: 5.0 Tonnes<br /> *Life Support System: 3.0 Tonnes<br /> *Consumables: 7.0 Tonnes consisting of (TCFM page 92):<br /> **Oxygen: 160 kg total (1 kg/man*day at 80% reuse)<br /> **Dry Food: 1600 kg total (.5 kg/man*day at 0% reuse)<br /> **Whole Food: 3200 kg total (1 kg/man*day at 0% reuse)<br /> **Potable Water: 0 kg total [?] (4 kg/man*day at 80% reuse)<br /> **Wash Water: 2080 kg total (26 kg/man*day at 90% reuse)<br /> *Electric Power (5 kWe solar): 1 tonne<br /> *Reaction Control System: .5 tonnes<br /> *Communications and information management: .2 tonnes<br /> *Lab Equipment: .5 tonnes<br /> *Crew: .4 tonnes<br /> *EVA Suits (4): .4 tonnes<br /> *Furniture and Interior: 1 tonne<br /> *Open Rovers (2): .8 tonnes<br /> *Pressurized Rover: 1.4 tonnes<br /> *Field Science Equipment: .5 tonnes<br /> *Spares and Margin (16%): 3.5 tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: 28.6 Tonnes<br /> *ERV Cabin Total: 11.5 Tonnes<br /> **ERV cabin structure: 3.0 tonnes<br /> **Life support System: 1.0 tonnes<br /> **Consumables: 3.4 tonnes<br /> **Electrical Power (5 kWe Solar) 1.0 tonnes<br /> **Reaction Control System: .5 tonnes<br /> **Communications and Information Management: .1 tonne<br /> **Furniture and Interior: .5 tonnes<br /> **EVA suits (4): .4 tonnes<br /> **Spares and Margin (16%): 1.6 tonnes<br /> *Aeroshell: 1.8 tonnes<br /> *Light Truck: .5 Tonnes<br /> *Hydrogen Feedstock: 6.3 Tonnes<br /> *ERV Propulsion Stages: 4.5 tonnes<br /> *Propellant Production Plant: .5 tonnes<br /> *Power Reactor (80 kWe): 3.5 tonnes<br /> <br /> =Figures Estimated as a part of the Tsiolkovsky Compendium Project=<br /> <br /> Note that if these are empty, it means that they have yet to be addressed by Tracers or final estimated masses determined. All items should have not only the estimated mass, but also what this mass is compared to the masses suggested by Zubrin and reproduced above.<br /> <br /> ==Hab==<br /> <br /> Total Mass: Tonnes<br /> *Hab Structure: Tonnes<br /> *Life Support System: Tonnes<br /> *[[Consumable Masses in Mars Direct|Consumables]]: Tonnes consisting of:<br /> **Oxygen: kg total ( kg/man*day at % reuse)<br /> **Dry Food: kg total ( kg/man*day at % reuse)<br /> **Whole Food: kg total ( kg/man*day at % reuse)<br /> **Potable Water: kg total ( kg/man*day at % reuse)<br /> **Wash Water: kg total ( kg/man*day at % reuse)<br /> *Electric Power (5 kWe solar): tonnes<br /> *Reaction Control System: tonnes<br /> *Communications and information management: tonnes<br /> *Lab Equipment: tonnes<br /> *Crew: tonnes<br /> *EVA Suits (4): tonnes<br /> *Furniture and Interior: tonnes<br /> *Open Rovers (2): tonnes<br /> *Pressurized Rover: tonnes<br /> *Field Science Equipment: tonnes<br /> *Spares and Margin (%): tonnes<br /> <br /> ==ERV (Earth Return Vehicle)==<br /> <br /> Total Mass: Tonnes<br /> *ERV Cabin Total: Tonnes<br /> **ERV cabin structure: tonnes<br /> **Life support System: tonnes<br /> **[[Consumables]]: tonnes<br /> **Electrical Power (5 kWe Solar) tonnes<br /> **Reaction Control System: tonnes<br /> **Communications and Information Management: tonne<br /> **Furniture and Interior: tonnes<br /> **EVA suits (4): tonnes<br /> **Spares and Margin (%): tonnes<br /> *Aeroshell: tonnes<br /> *Light Truck: Tonnes<br /> *Hydrogen Feedstock: Tonnes<br /> *ERV Propulsion Stages: tonnes<br /> *Propellant Production Plant: tonnes<br /> *Power Reactor (80 kWe): tonnes<br /> <br /> <br /> [[Category:Tsiolkovsky Compendium]]<br /> [[Category:Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mass_Components_of_Mars_Direct&diff=863 2010-03-20T07:26:27Z

<p>Mark Friedenbach: Mass Components of Mars Direct moved to Mass Allocations for Mars Direct: Match the terminology of Case for Mars.</p> <hr /> <div>#REDIRECT [[Mass Allocations for Mars Direct]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=861 2010-03-20T07:25:29Z

<p>Mark Friedenbach: /* Mass Figures */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Allocations for Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Allocations for Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab (Habitation Module)===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> ===Consumables===<br /> <br /> {|<br /> |+Consumable Requirement for Mars Direct Mission with Crew of Four<br /> ! Item !! Need/man-day !! Fraction recycled (kg) !! Wasted/man-day !! ERV Reqs 200 days in (kg) !! Hab Reqs 200 days out (kg) !! Hab Reqs 600 days surface (kg) !! Hab Reqs Total (kg)<br /> |-<br /> | Oxygen<br /> | align=right | 1.0<br /> | align=right | 0.8<br /> | align=right | 0.2<br /> | align=right | 160<br /> | align=right | 160<br /> | align=right | 0<br /> | align=right | 160<br /> |-<br /> | Dry food<br /> | align=right | 0.5<br /> | align=right | 0.0<br /> | align=right | 0.5<br /> | align=right | 400<br /> | align=right | 400<br /> | align=right | 1200<br /> | align=right | 1600<br /> |-<br /> | Whole food<br /> | align=right | 1.0<br /> | align=right | 0.0<br /> | align=right | 1.0<br /> | align=right | 800<br /> | align=right | 800<br /> | align=right | 2400<br /> | align=right | 3200<br /> |-<br /> | Potable water<br /> | align=right | 4.0<br /> | align=right | 0.8<br /> | align=right | 0.0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> | align=right | 0<br /> |-<br /> | Wash water<br /> | align=right | 26.0<br /> | align=right | 0.9<br /> | align=right | 2.6<br /> | align=right | 2080<br /> | align=right | 2080<br /> | align=right | 0<br /> | align=right | 2080<br /> |-<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |<br /> |-<br /> ! Total<br /> ! align=right | 32.5<br /> ! align=right | 0.87<br /> ! align=right | 4.3<br /> ! align=right | 3440<br /> ! align=right | 3440<br /> ! align=right | 3600<br /> ! align=right | 7400<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=860 2010-03-20T07:08:59Z

<p>Mark Friedenbach: /* ERV (Earth Return Vehicle) */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Components of Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Components of Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> {|<br /> |+Earth Return Vehicle<br /> ! Component !! Mass<br /> |-<br /> | ERV cabin structure<br /> | align=right | 3.0 mt<br /> |-<br /> | Life support system<br /> | align=right | 1.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 3.4 mt<br /> |-<br /> | Electrical power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control systems<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.1 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 0.5 mt<br /> |-<br /> | EVA suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 1.6 mt<br /> |-<br /> ! ERV cabin total<br /> ! align=right | 11.5 mt<br /> |-<br /> | Aeroshell<br /> | align=right | 1.8 mt<br /> |-<br /> | Light truck<br /> | align=right | 0.5 mt<br /> |-<br /> | Hydrogen feedstock<br /> | align=right | 6.3 mt<br /> |-<br /> | ERV propulsion stages<br /> | align=right | 4.5 mt<br /> |-<br /> | Propellant production plant<br /> | align=right | 0.5 mt<br /> |-<br /> | Power reactor (80 kWe)<br /> | align=right | 3.5 mt<br /> |-<br /> ! Total Mass<br /> ! align=right | 28.6 mt<br /> |}<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=859 2010-03-20T06:46:49Z

<p>Mark Friedenbach: /* Hab */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> ==[[Mass Components of Mars Direct|Mass Figures]]==<br /> <br /> &#039;&#039;To see a much-expanded article focusing specifically on this information, see the article [[Mass Components of Mars Direct]]&#039;&#039;<br /> <br /> On page 93 of [[The Case For Mars]] Zubrin gives the following numbers for the masses of each component. These are the masses to Mars&#039;s surface and not to orbit. Basically all of the mass is assigned either to the Hab or to the ERV. This topic is elaborated on more <br /> <br /> ===Hab===<br /> <br /> {|<br /> |+Habitation Module<br /> ! Component !! Mass<br /> |-<br /> | Hab structure<br /> | align=right | 5.0 mt<br /> |-<br /> | Life-support system<br /> | align=right | 3.0 mt<br /> |-<br /> | Consumables<br /> | align=right | 7.0 mt<br /> |-<br /> | Electric power (5 kWe solar)<br /> | align=right | 1.0 mt<br /> |-<br /> | Reaction control system<br /> | align=right | 0.5 mt<br /> |-<br /> | Comm. and Info. Mgmt.<br /> | align=right | 0.2 mt<br /> |-<br /> | Lab equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Crew (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | EVA Suits (4)<br /> | align=right | 0.4 mt<br /> |-<br /> | Furniture and interior<br /> | align=right | 1.0 mt<br /> |-<br /> | Open rovers (2)<br /> | align=right | 0.8 mt<br /> |-<br /> | Pressurized rover<br /> | align=right | 1.4 mt<br /> |-<br /> | Field science equipment<br /> | align=right | 0.5 mt<br /> |-<br /> | Spares and margin (16%)<br /> | align=right | 3.5 mt<br /> |-<br /> |<br /> |<br /> |-<br /> ! Total Mass<br /> ! align=right | 25.2 mt<br /> |}<br /> <br /> ===ERV (Earth Return Vehicle)===<br /> <br /> Total Mass: 28.6 Tonnes<br /> *ERV Cabin Total: 11.5 Tonnes<br /> **ERV cabin structure: 3.0 tonnes<br /> **Life support System: 1.0 tonnes<br /> **Consumables: 3.4 tonnes<br /> **Electrical Power (5 kWe Solar) 1.0 tonnes<br /> **Reaction Control System: .5 tonnes<br /> **Communications and Information Management: .1 tonne<br /> **Furniture and Interior: .5 tonnes<br /> **EVA suits (4): .4 tonnes<br /> **Spares and Margin (16%): 1.6 tonnes<br /> *Aeroshell: 1.8 tonnes<br /> *Light Truck: .5 Tonnes<br /> *Hydrogen Feedstock: 6.3 Tonnes<br /> *ERV Propulsion Stages: 4.5 tonnes<br /> *Propellant Production Plant: .5 tonnes<br /> *Power Reactor (80 kWe): 3.5 tonnes<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> *[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.22.7665&amp;rep=rep1&amp;type=pdf AIAA pdf download] <br /> <br /> <br /> [[category:Mars Direct]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Hab_Consumable_Masses_in_Mars_Direct&diff=858 2010-03-20T06:30:36Z

<p>Mark Friedenbach: /* Reuse Rate */</p> <hr /> <div>This is the page for estimating the masses of consumables in Mars Direct as part of the Tsiolkovsky Compendium Project. On page 92 of his book [[The Case For Mars]], Zubrin estimates them to be as follows:<br /> <br /> *Consumables: 7.0 Tonnes consisting of (TCFM page 92):<br /> **Oxygen: 160 kg total (1 kg/man*day at 80% reuse)<br /> **Dry Food: 1600 kg total (.5 kg/man*day at 0% reuse)<br /> **Whole Food: 3200 kg total (1 kg/man*day at 0% reuse)<br /> **Potable Water: 0 kg total [?] (4 kg/man*day at 80% reuse)<br /> **Wash Water: 2080 kg total (26 kg/man*day at 90% reuse)<br /> <br /> =Oxygen=<br /> <br /> ==Consumption Rate==<br /> <br /> On the space shuttle, Oxygen is used at a rate of .8 kg per person*day [http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_eclss.html#sts_eclss]. Zubrin&#039;s 1 kg per day seems reasonable.<br /> <br /> ==Reuse Rate==<br /> <br /> Based on technologies pioneered on the ISS, 90-95% closure for oxygen seems reasonable [citation needed]. Assuming the lower number, that is 0.1 kg per day of oxygen. Over 600 says with 4 people, that is 240 kg. With 95% closure, that is 120 kg of oxygen. An intermediate value falls at 180 kg, right near Zubrin&#039;s 160 kg.<br /> <br /> ==Total Mass for 600 day Mission==<br /> <br /> Based on the above, a figure of 180 kg of Oxygen is a reasonable estimate.<br /> <br /> =Dry Food=<br /> <br /> =Whole Food=<br /> <br /> =Potable Water=<br /> <br /> =Washwater=<br /> <br /> =References=</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=833 2010-03-17T17:18:48Z

<p>Mark Friedenbach: /* Terminology */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes secondary discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=832 2010-03-17T17:16:41Z

<p>Mark Friedenbach: /* Terminology */</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> This wiki article is about the original proposed mission architecture, and includes discussion of only those variants described by the original authors, Robert Zubrin and David Baker.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=831 2010-03-17T07:41:26Z

<p>Mark Friedenbach: </p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rocket|nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=NewMarsWiki:Tsiolkovsky_Compendium&diff=830 2010-03-17T07:39:24Z

<p>Mark Friedenbach: clarification</p> <hr /> <div>[[Image:TsiolkovskyCoin.jpg|thumb|A Russian Ruble coin with Tsiolkovsky on it]]This page is the introduction and entry point to the Tsiolkovsky Compendium, the evolving record of an ongoing effort to collect, organize, and make accessible scientific and engineering results relevant to near-term space exploration and permanent space settlement. The long term goal of the Tsiolkovsky Compendium is to create a comprehensive database of the scientific and engineering data required to design, simulate, implement, and operate manned exploration missions and settlement initiatives.<br /> <br /> The threshold for inclusion in the Tsiolkovsky Compendium is scientific and engineering validity. In science and engineering, validity generally refers to the extent to which a concept, analysis, conclusion or measurement is well-founded and corresponds accurately to the real world. Validity can be definitively established by experiment, or tentatively established by thorough and reasonable analysis or analogous demonstration.<br /> <br /> Every piece of data, every analysis, and every result included in the Tsiolkovsky Compendium must be cited, preferably from multiple sources. Data, analysis, and results from peer reviewed journals, prior missions, and primary accounts (from reputable sources) are given more weight than non-reviewed articles, original research, or secondary accounts.<br /> <br /> It is okay to have works-in-progress that are not fully cited yet, as long as over time progress is made to track down those references.<br /> <br /> It is also okay to contribute your own work or estimates, however you must be explicit when you do so and cite references for any assumptions made. One&#039;s own work is anything not constrained exactly by simple physical laws with no estimation involved.<br /> <br /> This information should be posted the best way that the Tracer&#039;s wiki-code skills allow. I suggest a quick read of one of the relevant wikipedia entries.<br /> <br /> Each page edited by a Tracer should be put in the category Tsiolkovsky Compendium. This can be done by putting the text:<br /> <br /> &#039;&#039;&#039;&lt;nowiki&gt;[[Category:Tsiolkovsky Compendium]]&lt;/nowiki&gt;&#039;&#039;&#039;<br /> <br /> At the bottom of the page.<br /> <br /> Our first project is finding specific engineering information about [[Mars Direct]]. If anyone can find the specific masses of all of the components that would be very helpful.<br /> <br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=NewMarsWiki:Tsiolkovsky_Compendium&diff=829 2010-03-17T07:38:00Z

<p>Mark Friedenbach: forgot to include analysis!</p> <hr /> <div>[[Image:TsiolkovskyCoin.jpg|thumb|A Russian Ruble coin with Tsiolkovsky on it]]This page is the introduction and entry point to the Tsiolkovsky Compendium, the evolving record of an ongoing effort to collect, organize, and make accessible scientific and engineering results relevant to near-term space exploration and permanent space settlement. The long term goal of the Tsiolkovsky Compendium is to create a comprehensive database of the scientific and engineering data required to design, simulate, implement, and operate manned exploration missions and settlement initiatives.<br /> <br /> The threshold for inclusion in the Tsiolkovsky Compendium is scientific and engineering validity. In science and engineering, validity generally refers to the extent to which a concept, analysis, conclusion or measurement is well-founded and corresponds accurately to the real world. Validity can be definitively established by experiment, or tentatively established by thorough and reasonable analysis or analogous demonstration.<br /> <br /> Every piece of data, every analysis, and every result included in the Tsiolkovsky Compendium must be cited, preferably from multiple sources. Data, analysis, and results from peer reviewed journals, prior missions, and primary sources (reputable sources) are given more weight than non-reviewed articles, original research, or secondary sources.<br /> <br /> It is okay to have works-in-progress that are not fully cited yet, as long as over time progress is made to track down those references.<br /> <br /> It is also okay to contribute your own work or estimates, however you must be explicit when you do so and cite references for any assumptions made. One&#039;s own work is anything not constrained exactly by simple physical laws with no estimation involved.<br /> <br /> This information should be posted the best way that the Tracer&#039;s wiki-code skills allow. I suggest a quick read of one of the relevant wikipedia entries.<br /> <br /> Each page edited by a Tracer should be put in the category Tsiolkovsky Compendium. This can be done by putting the text:<br /> <br /> &#039;&#039;&#039;&lt;nowiki&gt;[[Category:Tsiolkovsky Compendium]]&lt;/nowiki&gt;&#039;&#039;&#039;<br /> <br /> At the bottom of the page.<br /> <br /> Our first project is finding specific engineering information about [[Mars Direct]]. If anyone can find the specific masses of all of the components that would be very helpful.<br /> <br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=NewMarsWiki:Tsiolkovsky_Compendium&diff=828 2010-03-17T07:34:44Z

<p>Mark Friedenbach: less draconian language regarding full-citation</p> <hr /> <div>[[Image:TsiolkovskyCoin.jpg|thumb|A Russian Ruble coin with Tsiolkovsky on it]]This page is the introduction and entry point to the Tsiolkovsky Compendium, the evolving record of an ongoing effort to collect, organize, and make accessible scientific and engineering results relevant to near-term space exploration and permanent space settlement. The long term goal of the Tsiolkovsky Compendium is to create a comprehensive database of the scientific and engineering data required to design, simulate, implement, and operate manned exploration missions and settlement initiatives.<br /> <br /> The threshold for inclusion in the Tsiolkovsky Compendium is scientific and engineering validity. In science and engineering, validity generally refers to the extent to which a concept, conclusion or measurement is well-founded and corresponds accurately to the real world. Validity can be definitively established by experiment, or tentatively established by thorough and reasonable analysis or analogous demonstration.<br /> <br /> Every piece of data, every analysis, and every result included in the Tsiolkovsky Compendium must be cited, preferably from multiple sources. Data, analysis, and results from peer reviewed journals, prior missions, and primary sources (reputable sources) are given more weight than non-reviewed articles, original research, or secondary sources.<br /> <br /> It is okay to have works-in-progress that are not fully cited yet, as long as over time progress is made to track down those references.<br /> <br /> It is also okay to contribute your own work or estimates, however you must be explicit when you do so and cite references for any assumptions made. One&#039;s own work is anything not constrained exactly by simple physical laws with no estimation involved.<br /> <br /> This information should be posted the best way that the Tracer&#039;s wiki-code skills allow. I suggest a quick read of one of the relevant wikipedia entries.<br /> <br /> Each page edited by a Tracer should be put in the category Tsiolkovsky Compendium. This can be done by putting the text:<br /> <br /> &#039;&#039;&#039;&lt;nowiki&gt;[[Category:Tsiolkovsky Compendium]]&lt;/nowiki&gt;&#039;&#039;&#039;<br /> <br /> At the bottom of the page.<br /> <br /> Our first project is finding specific engineering information about [[Mars Direct]]. If anyone can find the specific masses of all of the components that would be very helpful.<br /> <br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=827 2010-03-17T07:24:12Z

<p>Mark Friedenbach: Reorganization</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> == Terminology ==<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> == Cost ==<br /> <br /> In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion.<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://mars-sim.sourceforge.net/ Mars Simulation Project by Scott Davis]<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=826 2010-03-17T07:20:22Z

<p>Mark Friedenbach: Clarified use of &quot;Mars Direct&quot;</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. In The Case for Mars, Robert Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> There has only ever been one one Mars Direct proposed mission architecture. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories, including variants that make use of [[nuclear thermal rockets]] and NASA&#039;s [[Design Reference Mission]]. The term &quot;Mars Semi-Direct&quot; was coined by Robert Zubrin to describe otherwise similar mission architectures that employ of Mars orbit rendezvous.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=825 2010-03-17T07:10:12Z

<p>Mark Friedenbach: clarification (zubrin&#039;s estimate was for three missions)</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. In The Case for Mars, Zubrin estimated the cost of development and operation of 3 missions at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=824 2010-03-17T07:07:07Z

<p>Mark Friedenbach: grammar fixes</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. Mars Direct relies on separate outbound and return vehicles, and a pipelined mission architecture for improved redundancy. In The Case for Mars, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=823 2010-03-17T07:02:49Z

<p>Mark Friedenbach: </p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. It also relies on multiple vehicles for improved redundancy. In the book, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=822 2010-03-17T07:01:25Z

<p>Mark Friedenbach: clarified purpose/nature of mission</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars for a long duration science mission. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. At the time it was proposed, Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. It also relies on multiple vehicles for improved redundancy. In the book, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=821 2010-03-17T07:00:26Z

<p>Mark Friedenbach: Mars Direct does require *some* technology development.</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses a reduced set of technologies to land a small crew on Mars. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. At the time it was proposed, Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. It also relies on multiple vehicles for improved redundancy. In the book, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=820 2010-03-17T06:58:33Z

<p>Mark Friedenbach: gave credit to Martin marieta, Zubrin and Baker&#039;s employer</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, developed by [[Robert Zubrin]] and [[David Baker]] at [[Martin Marieta]] in 1990. Mars Direct uses current technology to land a small crew on Mars. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. At the time it was proposed, Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. It also relies on multiple vehicles for improved redundancy. In the book, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=Mars_Direct&diff=819 2010-03-17T06:53:06Z

<p>Mark Friedenbach: scenario -&gt; proposed mission architecture</p> <hr /> <div>[[Image:MarsDirect.jpg|thumb|200px|right|The Mars Direct mission sequence.]]<br /> <br /> Mars Direct is a proposed mission architecture, devised by [[Robert Zubrin]] and [[David Baker]], that uses current technology to land a small crew on Mars. This plan was summarized in the book, [[The Case For Mars]], written by Robert Zubrin and Richard Wagner. At the time it was proposed, Mars Direct was innovative for its use of in situ resource utilization ([[ISRU]]) and for its use of direct launch from Earth to Mars without orbital construction or Mars orbit rendezvous. It also relies on multiple vehicles for improved redundancy. In the book, Zubrin estimated the cost of the mission at $20 - $30 billion. It has inspired several later proposed mission plans, including NASA&#039;s [[Design Reference Mission]].<br /> <br /> Technically, there is only one Mars Direct design. However, in some circles &quot;Mars Direct&quot; has become shorthand for any mars mission profile which reduces payloads and costs with ISRU and direct launch trajectories.<br /> <br /> Scott Davis has written a simulation, based on Zubrin&#039;s scenario, called [http://mars-sim.sourceforge.net/ Mars Simulation Project]<br /> <br /> == See Also ==<br /> <br /> *[[Manned mission to Mars]]<br /> *[[New Mars Direct]], and updated version currently being worked on at the newmars forums.<br /> <br /> == New Mars Forum Discussions ==<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3924 A Bigelow Mars Direct?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=3923 The Biggest Real Problem with Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1872 Euro Version of Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1879 Has Dr Zubrin Addressed Mars Direct Objections?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1810 Long Duration Lunar Mission Dry Run for Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1671 My Change To Mars Direct/Semi-Direct Mission Plans]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2122 Documentary on Mars Direct Trailer - Based on Zubrin&#039;s Case for Mars]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2082 Space Elevator vs. Mars Direct - Anyone Compare the Costs?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1787 Where Exactly is Mars Direct with NASA?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2127 Reasons Against Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2061 Mars Direct Still on the Table?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1982 How to Kill Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=2185 Mars Direct - How Much Does It Cost?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1886 How to Sell MArs Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1678 An All Solar Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1656 Mars Direct Rethought - Fixing the Potholes in Zubrin&#039;s Plan]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1814 Mars Direct International]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1907 Merits of Mars Direct - Is It Too Optimistic?]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Mission Risk Involving Mars Direct]<br /> <br /> [http://www.newmars.com/forums/viewtopic.php?t=1922 Revive the Saturn V for Mars Direct]<br /> <br /> ==External links==<br /> <br /> *[http://www.cbqc.net/mars/ Mars Direct]<br /> <br /> *[http://en.wikipedia.org/wiki/Mars_Direct Wikipedia Article - Mars Direct]<br /> <br /> *[http://www.astronautix.com Encyclopedia Astronautica]<br /> <br /> *[http://www.themarsunderground.com/ The Mars Underground] - A movie about Zubrin&#039;s Mars Direct released in 2006 (site requires Flash)<br /> <br /> [[category:Mars Expeditions]]<br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach http://wiki.newmars.com/index.php?title=NewMarsWiki:Tsiolkovsky_Compendium&diff=818 2010-03-17T06:45:16Z

<p>Mark Friedenbach: </p> <hr /> <div>[[Image:TsiolkovskyCoin.jpg|thumb|A Russian Ruble coin with Tsiolkovsky on it]]This page is the introduction and entry point to the Tsiolkovsky Compendium, the evolving record of an ongoing effort to collect, organize, and make accessible scientific and engineering results relevant to near-term space exploration and permanent space settlement. The long term goal of the Tsiolkovsky Compendium is to create a comprehensive database of the scientific and engineering data required to design, simulate, implement, and operate manned exploration missions and settlement initiatives.<br /> <br /> The threshold for inclusion in the Tsiolkovsky Compendium is scientific and engineering validity. In science and engineering, validity generally refers to the extent to which a concept, conclusion or measurement is well-founded and corresponds accurately to the real world. Validity can be definitively established by experiment, or tentatively established by thorough and reasonable analysis or analogous demonstration.<br /> <br /> Every piece of data, every analysis, and every result included in the Tsiolkovsky Compendium must be cited, preferably from multiple sources. Data, analysis, and results from peer reviewed journals, prior missions, and primary sources (reputable sources) are given more weight than non-reviewed articles, original research, or secondary sources.<br /> <br /> It is okay to contribute your own work or estimates, however you must be explicit when you do so and cite references for any assumptions made. One&#039;s own work is anything not constrained exactly by simple physical laws with no estimation involved.<br /> <br /> This information should be posted the best way that the Tracer&#039;s wiki-code skills allow. I suggest a quick read of one of the relevant wikipedia entries.<br /> <br /> Each page edited by a Tracer should be put in the category Tsiolkovsky Compendium. This can be done by putting the text:<br /> <br /> &#039;&#039;&#039;&lt;nowiki&gt;[[Category:Tsiolkovsky Compendium]]&lt;/nowiki&gt;&#039;&#039;&#039;<br /> <br /> At the bottom of the page.<br /> <br /> Our first project is finding specific engineering information about [[Mars Direct]]. If anyone can find the specific masses of all of the components that would be very helpful.<br /> <br /> [[Category:Tsiolkovsky Compendium]]</div>

Mark Friedenbach