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NASA NTRS · Conference Paper
Mechanization of and experience with a triplex fly-by-wire backup control system
Attribution
This is the abstract and citation. Full text lives at NASA NTRS — we link out rather than host. All credit to the authors and Legacy CDMS.
Abstract
Verbatim from NASA NTRS. Not paraphrased, not summarized.
A redundant three-axis analog control system was designed and developed to back up a digital fly-by-wire control system for an F-8C airplane. Forty-two flights, involving 58 hours of flight time, were flown by six pilots. The mechanization and operational experience with the backup control system, the problems involved in synchronizing it with the primary system, and the reliability of the system are discussed. The backup control system was dissimilar to the primary system, and it provided satisfactory handling through the flight envelope evaluated. Limited flight tests of a variety of control tasks showed that control was also satisfactory when the backup control system was controlled by a minimum-displacement (force) side stick. The operational reliability of the F-8 digital fly-by-wire control system was satisfactory, with no unintentional downmodes to the backup control system in flight. The ground and flight reliability of the system's components is discussed.
Authors
- Lock, W. P. NASA Flight Research Center
- Petersen, W. R. NASA Flight Research Center
- Whitman, G. B. Sperry Flight Systems Div.
Citation: Lock, W. P., Petersen, W. R., Whitman, G. B. (2016). Mechanization of and experience with a triplex fly-by-wire backup control system. Legacy CDMS. NASA NTRS ID 19750010176. https://ntrs.nasa.gov/citations/19750010176 ↗