NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsThe High Stability Engine Control (HISTEC) Program: Flight Demonstration PhaseFuture aircraft turbine engines, both commercial and military, must be able to accommodate expected increased levels of steady-state and dynamic engine-face distortion. The current approach of incorporating sufficient design stall margin to tolerate these increased levels of distortion would significantly reduce performance. The objective of the High Stability Engine Control (HISTEC) program is to design, develop, and flight-demonstrate an advanced, integrated engine control system that uses measurement-based estimates of distortion to enhance engine stability. The resulting distortion tolerant control reduces the required design stall margin, with a corresponding increase in performance and decrease in fuel burn. The HISTEC concept has been developed and was successfully flight demonstrated on the F-15 ACTIVE aircraft during the summer of 1997. The flight demonstration was planned and carried out in two phases, the first to show distortion estimation, and the second to show distortion accommodation. Post-flight analysis shows that the HISTEC technologies are able to successfully estimate and accommodate distortion, transiently setting the stall margin requirement on-line and in real-time. This allows the design stall margin requirement to be reduced, which in turn can be traded for significantly increased performance and/or decreased weight. Flight demonstration of the HISTEC technologies has significantly reduced the risk of transitioning the technology to tactical and commercial engines.Document ID19980206364Acquisition SourceLegacy CDMSDocument TypeTechnical Memorandum (TM)AuthorsDeLaat, John C.*(NASA Lewis Research Center Cleveland, OH United States)*Southwick, Robert D.*(Pratt and Whitney Aircraft West Palm Beach, FL United States)*Gallops, George W.*(Pratt and Whitney Aircraft West Palm Beach, FL United States)*Orme, John S.*(NASA Dryden Flight Research Center Edwards, CA United States)*Date AcquiredSeptember 6, 2013Publication DateJuly 1, 1998Publication InformationPublisher: American Inst. of Aeronautics and AstronauticsSubject CategoryAircraft Propulsion And PowerReport/Patent NumberNASA/TM-1998-208482E-11257AIAA Paper 98-3756NAS 1.15:208482Meeting InformationMeeting: Joint Propulsion ConferenceLocation: Cleveland, OHCountry: United StatesStart Date: July 12, 1998End Date: July 15, 1998Sponsors:American Society for Electrical Engineers,American Society of Mechanical Engineers,Society of Automotive Engineers, Inc.,American Inst. of Aeronautics and AstronauticsFunding Number(s)PROJECT: RTOP 523-53-13Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19980206364.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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