Flight Evaluation of a Hydromechanical Backup Control for the Digital electronic Engine Control System in an F100 Engine
Walsh, Kevin R. and Burcham, Frank W. (1984) Flight Evaluation of a Hydromechanical Backup Control for the Digital electronic Engine Control System in an F100 Engine.
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Abstract
The backup control (BUC) for the DEEC system is a simple hydromechanical system provided in the event a major malfunction occurs in the DEEC. The DEEC detects and accommodates engine faults in real time by using digital computation electronics which sustains full authority control over all the engine-controlled variables. This paper will describe the BUC features, the operation of the BUC system, the BUC control logic, and the BUC flight test results. The flight test results included: transfers to the BUC at military and maximum power settings; a military power acceleration showing comparisons between flight and simulation for BUC and primary modes; steady-state idle power showing compressor speeds at different flight conditions; and idle-to-military power BUC transients showing where compressor stalls occurred for different ramp rates and idle speeds. All the BUC transfers which have occurred during the DEEC flight program were initiated by the pilot. There were no automatic transfers to the BUC.
| EPrint Type: | Other |
|---|---|
| Keywords: | Digital control, Engine control, Flight tests, F-15 airplane, F100 engine. |
| Subjects: | (01 - 09) Aeronautics: (07) Aircraft Propulsion And Power Aircraft/Project: F-100 |
| ID Code: | 2028 |
| Deposited On: | 23 July 2009 |
| Additional Information: | 15 pages. NASA CP-2298, Paper 9, Digital Engine Control (DEEC) Flight Evaluation in an F-15 Airplane, March 1984, pp. 141-155. |
