Investigation of a Nozzle Instability on an F100 Engine Equipped With a Digital Electronic Engine Control
Burcham Jr., Frank W. and Zeller, John R. (1984) Investigation of a Nozzle Instability on an F100 Engine Equipped With a Digital Electronic Engine Control.
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Abstract
An instability in the nozzle of the F100 engine, equipped with a digital electronic engine control (DEEC), was observed during a flight evaluation on an F-15 airplane. This instability occurred in the upper left hand corner (ULHC) of the flight envelope during augmentation. The instability had not been predicted by stability analyses, closed-loop simulations of the engine, or altitude testing of the engine. The instability caused stalls and augmentor blowouts. This paper will describe the nozzle instability and the altitude testing done to study the problem at the NASA Lewis Research Center (LeRC). The analysis of the test results, both from a linear analysis and nonlinear digital simulation, will be presented. Results of software modifications on further flight tests will also be discussed.
| 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: | 2031 |
| Deposited On: | 23 July 2009 |
| Additional Information: | 14 pages. NASA CP-2298, Paper 12, Digital Electronic Engine Control (DEEC) Flight Evaluation in an F-15 Airplane, March 1984, pp. 201-214. |
