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Brandon Abel – Human Factors

This review explores critical design elements of consumables and life support systems for Earth to Mars transit. It discusses mass, power, schedules, and medical work. References included.

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Brandon Abel – Human Factors

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  1. Brandon Abel – Human Factors Critical Design Review March 6, 2001

  2. Consumables Life Support Systems Power In-Situ Schedule Medical Work in Progress References Overview

  3. Consumables – HAB1 • Nominal amount for Earth to Mars transit • After mission abort – hygiene water reduced to 10 kg/person/day • Reduces weight by 3500 kg while maintaining crew health

  4. Consumables - ERV • Accounts for nominal consumables for entire 230 days • An extra 99.2 kg and .85 m^3 of food needs to be added when CTV docks with ERV for Mars to Earth transit

  5. Consumables - CTV • The Consumables for the CTV include enough food, water, and oxygen for 7 days with no recycling capabilities

  6. Life Support2 • Life Support Systems are composed of physical-chemical processes • Both the HAB and ERV incorporate the same life support systems and specifications

  7. Total Mass/Volumes3 • HAB – 11450.8 kg / 32.68 m^3 • ERV – 6570.5 kg / 14.41 m^3 • CTV – 321.8 kg / .40 m^3

  8. Power4 • Due to the recycling process of the consumables, these power constraints are critical to the survivability of the crew

  9. In - Situ • The In–Situ production plant needs to have the capability to produce 3476 kg of water and 32 kg of oxygen • These consumables account for the stay on the planet not brought due to the lower amount of hygiene water given to the crew for the free-return

  10. Schedule • 24.5 hour day • This would be a very flexible schedule but average day on the job • 2.5 hours of com gives 1.5 of business and 1 of personal

  11. Mainly focused on trauma, injury, or illness Not focused on disease Examples First Aid (bandages, etc) Burn treatments, bone/muscle injuries Pain medications, common illness medications Equipment Medical

  12. Work in Progress • Sizing incorporated with layouts • Thermal Control around Venus • Medical equipment list • Report

  13. References • 1 Grover, M.R., Odell, E.H.,Smith-Brito, S.L., Warwick, R.W., Bruckner, A.P., “Ares Explore: A Study Of Human Mars Exploration Alternatives Using In Situ Propellant Production And Current Technology,” University of Washington, Seattle, WA, 1996, pp. 20-21. • 2 Powell, F.T., “Life Support System Considerations and Characteristics for a Manned Mars Mission,” The Case for Mars III, American Astronautical Society, San Diego, CA, 1987, pp. 102-198. • 3 Wieland, P.O., Designing for Human Presence in Space: An Introduction to Environment Control and Life Support Systems, NASA Reference Publication 1324, 1994, pp. 6, 183-262. • 4 “Man-Systems Integration Standards”, NASA-STD-3000 Vol. 1, NASA Johnson Space Center, 1989, pp. 7:1-4.

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