A Review of Baseline Assumptions and Ersatz Waste Streams for Partial Gravity Habitats and Orbiting Microgravity Habitats



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51st International Conference on Environmental Systems


Highly efficient water management and recovery systems will be required to support human missions beyond the low Earth orbit of the International Space Station (ISS). A review of baseline assumptions for the human activities and associated water cycle in surface, partial gravity habitats and orbiting, microgravity habitats is conducted. The paper reviews and updates ersatz formulations and water flow rates for the main liquid water waste streams of urine, humidity condensate, hygiene, and laundry. A framework is provided to coordinate development of water recovery systems for 30-day crew occupancies under partial gravity with longer term, continuous occupancy in orbiting microgravity habitats and the Mars transit habitat.


Dean Muirhead, Barrios Technology, Jacobs JETS Contract, US
Stacey Moller, Aerodyne Industries, Jacobs JETS Contract, US
Niklas Adam, NASA, US
Michael Callahan, NASA, US
ICES506: Human Exploration Beyond Low Earth Orbit: Missions and Technologies
The 51st International Conference on Environmental Systems was held in Saint Paul, Minnesota, US, on 10 July 2022 through 14 July 2022.


water recovery, partial gravity habitat, ersatz