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Carbon Dioxide Removal Assembly Software Product Improvements
Technical Paper
2004-01-2545
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Carbon Dioxide Removal Assembly (CDRA) on board the International Space Station (ISS) has experienced periodic check valve and selector valve failures as a result of a gradual build-up of contamination from particles that have breeched the adsorbent bed seals. The current software that controls CDRA has limitations that make troubleshooting the unit difficult in these situations, in large part due to the fact that valve position telemetry is only available during certain times. There are also situations where it is required to perform operations manually that would benefit from added code logic and commands to facilitate these operations.
The software has been reviewed for possible upgrades and changes that will allow engineers to better troubleshoot the unit in the event of various failures and also allow for better operability in degraded states. This paper will first give an overview of the current CDRA software architecture and logic and then outline the changes that have been proposed to the ISS program office to accomplish these goals.
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Citation
Young, S., "Carbon Dioxide Removal Assembly Software Product Improvements," SAE Technical Paper 2004-01-2545, 2004, https://doi.org/10.4271/2004-01-2545.Also In
References
- International Space Station (ISS) Carbon Dioxide Removal Assembly (CDRA) On-orbit Performance Reysa Richard Davis Matt El sheriff Dina paper number 04ICES-065 34 th International Conference on Environmental Systems (ICES) July 19-22 2004 Colorado Springs, Colorado
- ISS ECLS System Overview of Events February 2002-2004 Gentry Gregory Reysa Richard Williams Dave paper number 04ICES-311 34 th International Conference on Environmental Systems (ICES) July 19 22 2004 Colorado Springs, Colorado
- LAB Systems 3 R2 CSCI 683G97B Software Requirements Specification Initial Release August 3 2001 Boeing
- Internal Systems R2 CSCI 683G93A Software Requirements Specification Boeing
- Software Requirements Specification for the Computer Software Configuration Item (CSCI) Carbon Dioxide Removal Assembly July 22 1977 Honeywell