Status of the Advanced Oxygen Generation Assembly



Journal Title

Journal ISSN

Volume Title


2024 International Conference on Environmnetal 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. Over the past year, the team has performed additional design reviews, testing and analysis in an effort to optimize upgrade efforts and achieve the best value that meets Exploration mission requirements. Upgrades that will be incorporated 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 incorporation of recirculation loop nitrogen purging and water flushing. The ISS OGA will be upgraded to an Advanced OGA (AOGA) configuration and its operation demonstrated in a relevant flight environment.


Kevin Takada, NASA Marshall Space Flight Center, USA
David Hornyak, NASA Johnson Space Center (JSC), USA
John Garr, NASA Johnson Space Center (JSC), USA
Steven Van Keuren, S&K Global States Solutions, Inc., USA
Christine Faulkner, Jacobs Technology, Inc., USA
Abdelrahman Elsherbini, Collins Aerospace, USA
ICES302: Physico-Chemical Life Support- Air Revitalization Systems -Technology and Process Development
The 53rd International Conference on Environmental Systems was held in Louisville, Kentucky, USA, on 21 July 2024 through 25 July 2024.


ECLSS, OGA, Oxygen Generation Assembly, Advanced Oxygen Generation Assembly