Performance Improvements of an F-15 Airplane with an Integrated Engine-Flight Control System
Myers, Lawrence P. and Walsh, Kevin R. (1988) Performance Improvements of an F-15 Airplane with an Integrated Engine-Flight Control System. Technical Report NASA TM-100431, Research Engineering, NASA Dryden Flight Research Center.
Full text available as: |
Abstract
An integrated flight and propulsion control system has been developed and flight demonstrated on the NASA Ames-Dryden F-15 research aircraft. The highly integrated digital control (HIDEC) system provides additional engine thrust by increasing engine pressure ratio (EPR) at intermediate and afterburning power. The amount of EPR uptrim is modulated based on airplane maneuver requirements, flight conditions, and engine information. Engine thrust was increased as much as 10.5 percent at subsonic flight conditions by uptrimming EPR. The additional thrust significantly improved aircraft performance. Rate of climb was increased 14 percent at 40,000 ft and the time to climb from 10,000 to 40,000 ft was reduced 13 percent. A 14 and 24 percent increase in acceleration was obtained at intermediate and maximum power, respectively. The HIDEC logic performed fault free. No engine anomalies were encountered for EPR increases up to 12 percent and for angles of attack and sideslip of 32 degrees and 11 degrees, respectively.
| EPrint Type: | NASA Technical Memorandum |
|---|---|
| Keywords: | Advanced engine control system, Aircraft performance improvements, HIDEC, Increased engine thrust, Integrated engine-flight control system |
| Subjects: | Aircraft/Project: F-15 HIDEC (01 - 09) Aeronautics: (07) Aircraft Propulsion And Power Aircraft/Project: F-15 |
| ID Code: | 472 |
| Deposited On: | 05 January 2006 |
| Additional Information: | 12 pages. Prepared for presentation at the AIAA Fourth Flight Test Conference, May 18-20, 1988, at San Diego, California. |
