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1、AIAAAtmosphericFlightMechanicsConferenceAIAA2011-656608-11August2011,Portland,OregonAMethodforOptimizingLaunchVehicleAero-AssistIncludingPathOptimization†‡§**RoyJ.Hartfield,VivekAhuja,KevinM.Albarado,andThomasWalshAuburnUniversity,Auburn,AL,36830Anefficientmethodforimplement
2、ingthedecadesoldconceptofimprovingmultiplestagelaunchvehicleperformancebyaddingaerodynamicliftingduringthefirststageispresentedinthiswork.Apreliminarydesignforthecompletevehicleincludingtheoutermoldlineaerodynamicshapeismatchedtothemostadvantageoustrajectoryforaerodynamicass
3、ist.Thispapershowsthatperformanceenhancementcanbeachievedbyattachingwingstoarocketpoweredlaunchtypevehicledesign.Nomenclature=Massofthevehicleatanygivenpointintheflight=Gravitationalacceleration=VehicleEulerangle(Pitch)=RequiredVehicleEulerangle(Pitch)∅=VehicleEuler
4、angle(Roll)=RequiredVehicleEulerangle(Yaw)=VelocitycomponentalongBFS-Xatanygivenpointintheflight=VelocitycomponentalongBFS-Yatanygivenpointintheflight=VelocitycomponentalongBFS-Zatanygivenpointintheflight=Timeinseconds=PitchrateintheBFSduetotheEarth’srotation.=Rollra
5、teintheBFSduetotheEarth’srotation.=YawrateintheBFSduetotheEarth’srotation.=Pitchrateofthevehicle=RollrateofthevehicleDownloadedbyCNPIEC(XI'ANBRANCH)onOctober21,2013
6、http://arc.aiaa.org
7、DOI:10.2514/6.2011-6566=Yawrateofthevehicle=MomentofInertiaintheYYdirection
8、=MomentofInertiaintheXXdirection=MomentofInertiaintheZZdirectionα=Angleofattackofthemissileβ=NormalizedCompressibilityCoefficientδ=FinDeflectionangle†WoltoszProfessor,DepartmentofAerospaceEngineering,AssociateFellowAIAA‡GraduatePhDResearchAssistant,DepartmentofAerospaceEn
9、gineering,AIAAMember§GraduateMSResearchAssistant,DepartmentofAerospaceEngineering,AIAAStudentMember**GraduateMSResearchAssistant,DepartmentofAerospaceEngineering,AIAAStudentMember1AmericanInstituteofAeronauticsandAstronauticsCopyright©2011bytheAmericanInstituteofAeronauticsa
10、ndAstronautics,Inc.Allrightsreserved. =Machnumberofthenetfreestreamvelocity
