Status of the Advanced Oxygen Generation Assembly Design



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2020 International Conference on Environmental Systems


Future Exploration missions will require an Oxygen Generation Assembly (OGA) to electrolyze water to supply oxygen for crew metabolic consumption. The system design will be based on the International Space Station (ISS) OGA but with added improvements based on lessons learned during ISS operations and technological advances since the original OGA was designed and built. The goal of these improvements will be to reduce system weight, crew maintenance time and spares mass while increasing reliability. Currently, the team is performing trade studies, tests and analyses to inform the redesign. Upgrades being considered include: redesign of the electrolysis cell stack, redesign of the hydrogen dome, replacement of the hydrogen sensors, redesign of the recirculation loop deionizing bed and redesign of the cell stack Power Supply Module. The ISS OGA will be upgraded to an Advanced OGA (AOGA) configuration and its operation demonstrated in a flight environment.


Kevin Takada, National Aeronautics and Space Administration (NASA), US
Alesha Ridley, National Aeronautics and Space Administration (NASA), US
Luis Velasquez, HX5 LLC, US
Steven Van Keuren, S&K Global Solutions, Inc., US
Stephen Mcdougle, MEI Technologies, US
Phillip Baker, Collins Aerospace, US
ICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process Development
The proceedings for the 2020 International Conference on Environmental Systems were published from July 31, 2020. The technical papers were not presented in person due to the inability to hold the event as scheduled in Lisbon, Portugal because of the COVID-19 global pandemic.


Oxygen generation assembly, Environmental Control and Life Support Systems (ECLSS), Electrolysis