航空发动机英文版

Theaero-enginesPiston--enginesaremodeledfourstrokepistonengine+2propellersWorldwar2Economical、simplestructure、lightweightUsedinsmallplanesandagriculturalairplanesLowrotationalspeedandpowerGasturbineengine3mainparts:GascompressorCombustionchamberTurbineUsetheheatproducedbythegas’scombustiontowork.TurbojetengineThegasgotahightemperatureandpressureafterburningandspoutfromthenozzle,pushingthetransportationtomoveDrivetheaircompressoratthesametime国产“枭龙”朝鲜战争空中两大对手MIG-15与F-86UsedinEarlyfighteraircraftEasytoreachahighspeedandsimplestructureHigherthrust=highertemperature+higherpressure(pressureratio)=higherspeedofexhaust=wasteofenergy=higherfuelconsumptionTurbofanengineInternalbypass内函道externalbypass外函道bypassratio函道比Thegasdrivesboththeaircompressorandthefan.AndprovidethethrustIntakemoreairThefangetsapartoftheenergyfromgas,sothegascanbemorepressed,butwithalowtemperatureoftheexhaust.Thentheefficiencywouldbeincreased.Lowfuelconsumptionandlongaircraftrange(航程)国产歼10波音747UsedinmodernfighterandtransportplaneTworotors双转子HighercompressratioturbopropengineAlargebypassratioThegas’senergyismainlyusedtodrivethepropeller,andtheproppullstheplanetomove.OnlyalittlepartoftheenergyistakenoutbytheexhaustThethrustishighForthepropertyoftheprop,thespeedcannotbeveryhighWidelyusedintransportplanesTurbo-shaftengineAlmostthesamewiththeturbopropengineexceptthatalltheenergyisusedtodrivetheshaftUsedinthehelicopterpulsejetengine脉冲式喷气发动机ramjetengine冲压式发动机X-43高超音速验证机使用高速冲压发动机