Space Station Life Support Loop (ECLSS)

This simulator models the closed-loop Environmental Control and Life Support System that keeps a crewed space station breathable — the same architecture flown on the ISS. A water electrolyzer splits water into oxygen (vented to the cabin) and hydrogen; a CO₂ scrubber pulls carbon dioxide out of the cabin air; and a Sabatier reactor combines that CO₂ with the electrolyzer's hydrogen to recover water, closing the loop. Tune crew size, electrolyzer power, scrubber capacity and Sabatier efficiency and watch the cabin O₂ level, CO₂ concentration and water reserve evolve from a real mass-balance model — run the loop well and it self-sustains; starve any one stage and the whole chain degrades.