that can go for 2 years without resupply and has been proven to work in a space environment and I'll concede the point. To the best of my knowledge, no such system exists. When considering a manned mission to Mars, you have to allow for the worst case scenario (abort back to Earth as you're approaching Mars). That scenario could take as much as 2 years (give or take a few months). There won't be any Progress resupply ships delivering fresh consumables to the vehicle, so the system has to work the entire mission with the consumables on hand at the start. You can't hand-wave that away. If, for whatever reason, the mission is unable to land on Mars, there won't be much in the way of opportunities for chemical separations other than on the waste products produced by the crew. While several ideas have been tested on the ground, to the best of my knowledge, none have been tested in space.
Space/Science » in reply to Recipes For Failure And Mediocrity
Show me a life support system...
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