Abstract Flight tests were recently completed to demonstratean inlet-distortion-tolerant engine control system. Theseflight tests were part of NASA's High Stability EngineControl (HISTEC) program. The objective of theHISTEC program was to design, develop, and flightdemonstrate an advanced integrated engine controlsystem that uses measurement-based, real-timeestimates of inlet airflow distortion to enhance enginestability. With improved stability and tolerance of inletairflow distortion, future engine designs may benefitfrom a reduction in design stall-margin requirementsand enhanced reliability, with a corresponding increasein performance and decrease in fuel consumption. Thispaper describes the HISTEC methodology, presents anaircraft test bed description (including HISTEC-specificmodifications) and verification and validation groundtests. Additionally, flight test safety considerations, testplan and technique design and approach, and flightoperations are addressed. Some illustrative results arepresented to demonstrate the type of analysis and resultsproduced from the flight test program.
[1]
Frank W. Burcham,et al.
Flight-determined benefits of integrated flight-propulsion control systems
,
1992
.
[2]
A WalkerL,et al.
F-15 ACTIVE Flight Research Program.
,
1996
.
[3]
John C. DeLaat,et al.
The High Stability Engine Control (HISTEC) Program: Flight Demonstration Phase
,
1998
.
[4]
R. Bursey,et al.
F-15 ACTIVE A FLEXIBLE PROPULSION INTEGRATION TESTBED
,
1994
.
[5]
John C. DeLaat,et al.
High Stability Engine Control (HISTEC)
,
1996
.
[6]
John C. DeLaat,et al.
HIGH STABILITY ENGINE CONTROL (HISTEC): FLIGHT DEMONSTRATION RESULTS
,
1998
.