Development and Testing of a High Stability Engine Control (HISTEC) System

Orme, John S. and DeLaat, John C. and Southwick, Robert D. and Gallops, George W. and Doane, Paul M. (1998) Development and Testing of a High Stability Engine Control (HISTEC) System. Technical Report NASA/TM-1998-206562, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

Flight tests were recently completed to demonstrate an inlet-distortion-tolerant engine control system. These flight tests were part of NASA’s High Stability Engine Control (HISTEC) program. The objective of the HISTEC program was to design, develop, and flight demonstrate an advanced integrated engine control system that uses measurement-based, real-time estimates of inlet airflow distortion to enhance engine stability. With improved stability and tolerance of inlet airflow distortion, future engine designs may benefit from a reduction in design stall-margin requirements and enhanced reliability, with a corresponding increase in performance and decrease in fuel consumption. This paper describes the HISTEC methodology, presents an aircraft test bed description (including HISTEC-specific modifications) and verification and validation ground tests. Additionally, flight test safety considerations, test plan and technique design and approach, and flight operations are addressed. Some illustrative results are presented to demonstrate the type of analysis and results produced from the flight test program.

EPrint Type:	NASA Technical Memorandum
Keywords:	Air data, Avionics, Controls, Engine control, Engine stability, F-15 ACTIVE, Flight research, HISTEC, Inlet distortion, Integrated controls, Propulsion
Subjects:	(01 - 09) Aeronautics: (07) Aircraft Propulsion And Power (01 - 09) Aeronautics: (05) Aircraft Design, Testing And Performance Aircraft/Project: F-15 ACTIVE
ID Code:	170
Deposited On:	08 June 2004
Additional Information:	18 pages. Presented at the 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Cleveland, Ohio, July 13–15, 1998. John Orme, NASA Dryden, Edwards, California; John DeLaat, NASA Lewis Research Center, Cleveland, Ohio; Robert Southwick and George Gallops, United Technologies Corporation, Pratt & Whitney, West Palm Beach, Florida; Paul Doane, Boeing Phantom Works, St. Louis, Missouri.