Sequencing design for BFS engagementThe Space Shuttle's avionics system is controlled by five onboard computers, four of which are loaded with the Primary Avionics Software System (PASS), and one of which is loaded with the Backup Flight System (BFS). The Shuttle is nominally controlled by the PASS computers. However, in the event of a PASS generic software failure, the BFS is engaged and assumes control of the Shuttle. The BFS Sequencing System problems presented by the engage requirement and the solutions chosen by the developers are discussed. These solutions constitute a technique which can be applied to the design of any real-time backup system.
Document ID
19820026562
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Jurica, K. E. (Intermetrics, Inc. Pearland, TX, United States)