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α,(,710072):,(CommonAeroVehicle,CAV),CAVCAV,,:,,,,:V412.1:A:100022758(2009)022018420630,,[1]HyperSoar[2],,(DARPA)(Falcon)[3](SLV)CAV(HCV)CAVHCVHyperSoar3CAV(HTV21HTV23)CAVHyperSoar:CAV,HCV()()()(),DARPACAV2:HTV21HTV22[47](1):HTV7000m�s,,,3045km,,HTV212,DARPAHTV21,HTV22[8],68CAV,,18300RN(Θ)015V1043105,,Falcon,CAV,CAV,,∃V=-I�Inm-mm,,20094272JournalofNorthwesternPolytechnicalUniversityApr.2009Vol.27No.2α226(),,:2007111:1981-,,,CAV,CAV1HTV21HTV2212,CAV2,,,,,:2,()(6),10;,;,,;,,,,,,:,,:,Hyper2X,X243A,10s,,,,,,,CAV2,[8],,2CAV,(),CAV,:CAV,,,,;CAV,,;,CAV,CAV,,,VV[](MRV)5812:CACA9Aa(HPMaRV,3)CAVFalcon,HTV21(4)AMaRV,215310[10]3HPMaRV4HTV21,,,CAVHTV22(5)HPMaRV,,3154[10],HPMaRV,HyperSoar(6)HCV(7),HyperSoar,HCV(),,,[13],HyperSoarHCV,,,5TV26HyperSoar7HCV,CAV3CAV,[12],CAV,,2,,,(8),60,Schultz2,Sy,[3],G68127H2peer1ilbert,,:,,,,,,(),,()[13],,[1419],8,2:RankinsPines[19,20],,,:,,,,,2,,,CAV4HL220[5,17,22](PeriodicCruise,PC)(Steady2stateCruise,SC),1976,,,,Powell,,(),,()()()powell12500Ns�kg,18002400m�s:2400m�s,3415m50km2400m�s,319%,519%,91117812:910111(kg�km)()(W�cm2)2815151861227138601941156182,:4219km,4940m�s,55km5000m�s,518%,11%,22(kg�km)()(W�cm2)11547513211145770189500,2,2,,,CAV,,,,,,:,,;,,(),();,,5Falcon,CAV,CAV,CAV:(1),CAV,(2),CAV(3),CAV(4):[1]RichieG.TheCommonAeroVehicle:SpaceDeliverySystemofTheFuture.AIAA29924435[2]ScottWB.AirbreathingHyperSoarWouldBounceonUpperAtmosphere.AviationWeek&SpaceTechno2logy,149(10):126[3]WalkerSH,RodgersF.FalconHypersonicTechnologyOverview.AIAA2200523253[4]WalkerSH.HypersonicForceApplicationandLaunchTechnologyDemonstration.ADA440964,2004[5]MorimotoH,ChuangJCH.Minimum2FuelTrajectoryalongEntireFlightProfileforaHypersonicVehiclewithCons2I22[6],1,6,3(5)535Z,WOzfGTjyfyVfBjUyf,6,3(5)535()88127traint.AAA19984122.2002:117houhaoChenanchun.ptimiationolideraectororaHpersonicehicle.JournaloeiingniversitoAeronauticsandAstronautics2002:117inChinese[7]GrahamWarwick.HypersonicProjectsFaceChangeasCongressUrgesJointTechnologyOffice.[8]..,2006,23(1):5356LiaoShaoying.ExperimentalResearchoftheTurbopumpSystemStartsforLiquidRocketEngine.AerospaceShanghai,2006,23(1):5356(inChinese)[9]PhillipsTH.ACommonAeroVehicle(CAV)Model,Description,andEmploymentGuide.200311[10]FalconHTVgetsDARPAgo2ahead.[11]RodiPE.TheOsculatingFlowfieldMethodofWaveriderGeometryGeneration.AIAA2200520511,2005[12]CarterPH,PinesDJ,etal.ApproximatePerformanceofPeriodicHypersonic.AIAA29821644[13]SpeyerJL.NonoptimalityoftheSteady2StateCruiseforAircraft.AIAAJournal,14(11):16041610[14]SpeyerJL.PeriodicOptimalFlight.AIAA2199520001[15]ChuangJCH,MorimotoH.OptimalPeriodicCruiseforaHypersonicVehiclewithConstraints.AIAA2199623876[16]YoussefH,ChowdhryR.HypersonicSkippingTrajetory.AIAA2200325498[17]YoussefH,ChowdhryR.HypersonicGlobalReachTrajectoryOptimization.AIAA2200425167[18]NgoAD,AFuel2OptimalTrajectoryforaConstrainedHypersonicUsingaDirectTranscriptionMethod.IEEEAerospaceConferenceProceedings,2004[19]ChenRH,WilliamsonWR,SpeyerJL,HusseinYoussef,RajivChowdhry.OptimizationandImplementationofPeriodicCruiseforaHypersonicVehicle.JournalofGuidance,ControlandDynamics[20]FalconRankins,PinesDJ,RelativeHeatLoadComparisonofVehiclesFlyingHypersonicTransatmosphereTrajectory,JournalofSpacecraftandRockets,37(4):491498ConceptualResearchonPoweredCommonAeroVehicleKangBingnan,TangShuo(CollegeofAstronautics,NorthwesternPolytechnicalUniversity,Xian710072,China)Abstract:WereviewthedevelopmentoftheFalconprogramoftheUS.Toavoidthedifficultiesindevelopingun2poweredCommonAeroVehicle(CAV)adoptedbytheprogram,weproposetheconceptualpoweredCAV.WeanalyzesomekeyenablingtechnologiesofpoweredCAV,suchasselectionofpropulsionsystem,designofaerodynamicconfigurationandtrajectorydesign.Section1ofthefullpaper,aftermuchdiscussionincludingparticularlythatofFig.2inthefullpaper,concludesthatthepoweredCAVshouldadoptrocketengineasitspropulsionsystem.Section2,afteranalysis,concludesthateithertheliftconfigurationwithhighlift2dragratioorthewave2riderconfigurationwithitscapacityratioimprovedistheidealcandidateforpoweredCAV.Aftercomparingthehypersonicperiodiccruisetrajectorywiththehypersonicsteady2statecruisetrajectory,section3concludesthattheperiodiccruisetrajectoryisbetterthanthesteadystatecruisetrajectoryandthusshouldbethefirst2choicetrajectoryofpoweredCAV.Section4calculatesandcomparestwonumericalexamples.Thecalculationresultsandtheircomparison,giveninFigs.9through11andTables1and2,showpreliminarilythatthedesignofconfigurationandthatoftrajectoryshouldbeintegratedsoastoenhancetheoverallperformanceofpoweredCAV.Keywords:trajectories,rocketengines,CommonAeroVehicle(CAV),aerodynamicconfiguration9812: