1988 a high fidelity real-time simulation of a small turboshaft engine

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1、NASATechnicalMemorandum100991"lAHighFidelityReal-TimeSimulationofaSmallTurboshaftEngineMarkG.Ballin=NBB-2637BAHIGHFIDELITYEEAL-TI_E

2、NAS_-TM-100991)SIMULATIONOFASMALLTDRBOSHAFTENGINECSCL_IE[NASA)95pUnclasG3/080156166July1988

3、

4、=NationalAeronauticsandSpaceAdministrationNASATechnicalMem

5、orandum100991AHighFidelityReal-TimeSimulationofaSmallTurboshaftEngineMarkG.Ballin,AmesResearchCenter,MoffettField,CaliforniaJuly1988I_JASANationalAeronauticsandSpaceAdministrationAmesResearchCenterMoffettField,California94035NationalAeronauticsandN/ASpaceAdministrationAmesResearchCe

6、nterMoffettField,California94035ShelleyJ.ScarlchReplytoAt'Inof:M/S241-13ERRATARE:NASATM100991AHigh-FidelltyReal-TimeSimulationofaSmallTurboshaftEngineMarkG.BallinJuly1988Onp.2,figurei,acorrectionshouldbenoted.Intheuppermiddleportionofthefigure,GASINDUCEDFLAPREGRESSIVEshouldbeCONTROL

7、-SYSTEM-INDUCEDFLAPREGRESSIVE.Yours,Publications=DRAFTAHIGHFIDELITYREAL-TIMESIMULATIONOFASMALLTURBOSHAFTENGINEMarkG.Ball.inAmesResearchCenterSUMMARYAhigh-fidelltycomponent-typemodelandreal-timedigitalsimulationoftheGeneralElectricT700-GE-700turboshaftengineweredevelopedforusewithcur

8、rentgenerationreal-timeblade-dementrotorhelicoptersimulations.AcontrolsystemmodelbasedonthespecificationfuelcontrolsystemusedintheUH-60ABlackHawkhelicopterisalsopre-sented.Themodelingassumptionsandreal-timedigitalimplementationmethodsparticulartothesimulationofsmallturboshaftengines

9、aredescribed.Thevalidityofthesimulationisdemonstratedbycomparisonwithanalysis-orientedsimulationsdevelopedbythemanu-facturer,availabletestdata,andflighttesttimehistories.NOMENCLATUREAmareaofexposedmetal;usedinheat-sinkrepresentationB1seal-pressurizationbleedfractiontBEpower-turbine:

10、balancebleedfractionB3compressor-diffuserbleedfractionspecificheatofgas;usedinheat-sinkrepresentationc_specificheatofmetal;usedinheat-sinkrepresentationFARratiooffueltoatmosphericgasincombustorhconvectiveheattransfercoefficient;usedinheat-sinkrepresentationH2station2enthalpy,Btu/lb,

11、__3station3enthalpy