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International Space Station Carbon Dioxide Removal Assembly (ISS CDRA) Concepts and Advancements
Technical Paper
2005-01-2892
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An important aspect of air revitalization for life support in spacecraft is the removal of carbon dioxide from cabin air. Several types of carbon dioxide removal systems are in use or have been proposed for use in spacecraft life support systems. These systems rely on various removal techniques that employ different architectures and media for scrubbing CO2, such as permeable membranes, liquid amine, adsorbents, and absorbents. Sorbent systems have been used since the first manned missions. The current state of key technology is the existing International Space Station (ISS) Carbon Dioxide Removal Assembly (CDRA), a system that selectively removes carbon dioxide from the cabin atmosphere. The CDRA system was launched aboard UF-2 in February 2001 and resides in the U.S. Destiny Laboratory module. During the past four years, the CDRA system has experienced operational limitations. Troubleshooting the CDRA system resulted in several approaches to developing work-around solutions that would minimize the impact on astronaut time required to implement interim solutions.
The paper discusses some of the short-term solutions applied to promote hardware life and restore full functionality, as well as long-term plans and solutions for improving operability and reliability.
The CDRA is a critical piece of life support equipment in the air revitalization system of the ISS, and is demonstrated technology that may ultimately prove well-suited for use in lunar or Mars base, and Mars transit life support applications.
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Citation
Sherif, D. and Knox, J., "International Space Station Carbon Dioxide Removal Assembly (ISS CDRA) Concepts and Advancements," SAE Technical Paper 2005-01-2892, 2005, https://doi.org/10.4271/2005-01-2892.Also In
References
- Molecular Sieve CO2 Removal Systems for Future Missions: Test Results and Alternative Designs Nacheff-Benedict M.S.
- International Space Station (ISS) Environmental Control and Life Support (ECLS) System Overview of Events: February 2002-2004 Gentry Reysa Gregory J. P. Richard Williams, Dave E.
- Experimental and Analytical Investigation of Pressure Differentials for Clean and Loaded Wire Meshes Used in Zeolite Retention Knox, James C.
- Performance Enhancement, Power Reduction, and Other Flight Concerns - Testing of the CO2 Removal Assembly for ISS Knox, James C. Howard, David F.
- Integrated Testing of a 4-Bed Molecular Sieve and a Temperature-Swing Adsorption Compressor for Closed-Loop Air Revitalization Knox, James C. Mulloth, Lila M. Affleck, David L.
- Integrated Test and Evaluation of a 4-Bed Molecular Sieve (4BMS) Carbon Dioxide Removal System (CDRA), Mechanical Compressor Engineering Development Unit (EDU), and Sabatier Engineering Development Unit (EDU) Knox, James C. Campbell, Melissa L. Murdoch, Karen E. Jeng Frank F. Miller, Lee A.