Flight experience with a fail-operational digital fly-by-wire control systemThe NASA Dryden Flight Research Center is flight testing a triply redundant digital fly-by-wire (DFBW) control system installed in an F-8 aircraft. The full-time, full-authority system performs three-axis flight control computations, including stability and command augmentation, autopilot functions, failure detection and isolation, and self-test functions. Advanced control law experiments include an active flap mode for ride smoothing and maneuver drag reduction. This paper discusses research being conducted on computer synchronization, fault detection, fault isolation, and recovery from transient faults. The F-8 DFBW system has demonstrated immunity from nuisance fault declarations while quickly identifying truly faulty components.
Document ID
19780028344
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Brown, S. R. (NASA Hugh L. Dryden Flight Research Center Edwards, CA, United States)
Szalai, K. J. (NASA Flight Research Center Edwards, Calif., United States)