The least expensive life support for brief human missions is direct supply of all water and oxygen from Earth without any recycling. The currently most advanced human life support system was designed for the International Space Station (ISS) and will use physicochemical systems to recycle water and oxygen. This paper compares physicochemical to direct supply air and water life support systems using Equivalent Mass (EM). EM breakeven dates and EM ratios show that physicochemical systems are more cost effective for longer mission durations.
Breakeven Mission Durations for Physicochemical Recycling to Replace Direct Supply Life Support
Sae Technical Papers
International Conference On Environmental Systems ; 2007
2007-07-09
Conference paper
English
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