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Greg Cmarik

Publications and source records attributed to Greg Cmarik.

2 records
All sourcesNASA NTRSDOE OSTI
NASA NTRSDate not supplied

Status of the Four Bed Carbon Dioxide Scrubber ISS Technology Demonstration

The Four Bed Carbon Dioxide Scrubber flight demonstration is presently operating onboard the International Space Station. After being launched in August and activated in September 2021, the system has been removing metabolic CO2 from the cabin as a supplement and replacement for other CO2 removal systems, specifically the two Carbon Dioxide Removal Assemblies. This paper describes on-orbit operations and changes (including installation of the Calnetix blower) during 2022 and early 2023. Performance of the system especially as affected by changes in the on-orbit configuration will be described. System reliability, software changes, and ongoing efforts will be summarized.

Life Support↗
NASA NTRSDate not supplied

Four Bed Carbon Dioxide Scrubber Engineering Development Unit Cabin Air Inlet Testing

This paper reviews a test series conducted on the Four Bed Carbon Dioxide Scrubber Engineering Development Unit, a ground test analog for the Four Bed Carbon Dioxide Scrubber Technology Demonstration currently operating on the International Space Station. For this test series conducted in mid-2022, an alternate FBCO2 inlet air location (direct from the cabin) was evaluated. This paper presents test results, rationale for observed performance changes, and possible ramifications for the flight FBCO2 Scrubber.

Life Support↗