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Integrated Failure Detection and Management for the Space Station Freedom External Active Thermal Control System
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English
Abstract
This paper presents the integrated approach toward failure detection, isolation, and recovery/reconfiguration to be used for the Space Station Freedom External Active Thermal Control System (EATCS). The on-board and on-ground diagnostic capabilities of the EATCS are discussed. Time and safety critical failures, as well as noncritical failures, and the detection coverage for each provided by existing capabilities are reviewed. The allocation of responsibility between onboard software and ground-based systems, to be shown during ground testing at the Johnson Space Center, is described. Failure isolation capabilities allocated to the ground include some functionality originally found on orbit but moved to the ground to reduce on-board resource requirements. Complex failures requiring the analysis of multiple external variables, such as environmental conditions, heat loads, or station attitude, are also allocated to ground personnel.
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Citation
Mesloh, N., Hill, T., and Kosyk, K., "Integrated Failure Detection and Management for the Space Station Freedom External Active Thermal Control System," SAE Technical Paper 932149, 1993, https://doi.org/10.4271/932149.Also In
References
- Flight System Software Requirements (Thermal Control System) McDonnell Douglas Space Systems Company SSP 30613, Contract NAS9-18200 1993
- Control Center Complex Integrated Fault Detection and Management Subsystem Functional Requirements Loral Space Information Systems DRL LI 25B, Contract NAS9-18300 1993
- Boyer R. Space Station Freedom External Active Thermal Control System High Fidelity Simulator Modeling Document McDonnell Douglas Space Systems Company 1992
- Lauritsen J. Control Center Systems Division, FDM Advanced Automation Integration JSC Mission Operations Directorate, presentation November 4 1992
- Kirby S. Lauritsen J. Pack G. Ha A. Jowers S. McNenny R. Truong T. Real-time Automated Failure Analysis for On-orbit Operations SPIE Proceedings 1963 April 1993
- Boyer R. Hill T. Thermal Control System Automation Project, FY92 Interim Report McDonnell Douglas Space Systems Company MDC 92H1234 1992