NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsHigh Stability Engine Control (HISTEC)Future aircraft turbine engines, both commercial and military, must be able to successfully accommodate expected increased levels of steady-state and dynamic engine-face distortion. The current approach of incorporating a sufficient component 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, high-stability, integrated engine control system that uses measurement-based, real-time 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, consisting of a Distortion Estimation System and a Stability Management Control, has been designed and developed. The Distortion Estimation System uses a small number of high-response pressure sensors at the engine face to calculate indicators of the type and extent of distortion in real time. The Stability Management Control, through direct control of the fan and compressor pressure ratio, accommodates the distortion by transiently increasing the amount of stall margin available based on information from the Distortion Estimation System. Simulation studies have shown the HISTEC distortion tolerant control is able to successfully estimate and accommodate time-varying distortion. Currently, hardware and software systems necessary for flight demonstration of the HISTEC concept are being designed and developed. The HISTEC concept will be flight tested in early 1997.Document ID19960033186Acquisition SourceLegacy CDMSDocument TypeConference PaperAuthorsDeLaat, John C.*(NASA Lewis Research Center Cleveland, OH United States)*Southwick, Robert D.*(United Technologies Corp. West Palm Beach, FL United States)*Gallops, George W.*(United Technologies Corp. West Palm Beach, FL United States)*Date AcquiredSeptember 6, 2013Publication DateJune 1, 1996Subject CategoryAircraft Propulsion And PowerReport/Patent NumberNAS 1.15:107272E-10339AIAA Paper 96-2586NASA-TM-107272Meeting InformationMeeting: Joint Propulsion ConferenceLocation: Lake Buena Vista, FLCountry: United StatesStart Date: July 1, 1996End Date: July 3, 1996Sponsors:American Society for Electrical Engineers,American Society of Mechanical Engineers,American Inst. of Aeronautics and Astronautics,Society of Automotive Engineers, Inc.Accession Number96N30006Funding Number(s)PROJECT: RTOP 505-62-50Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19960033186.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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