《航空工程英語》課件-第七章

PowerPlant航空工程英語AMEnglish/7-1PowerPlantTheengineexhaustisveryhotforlongdistancesbehindtheengine.Thiscancausedamagetopersonnelandequipment.Exhaustvelocityisveryhighforlongdistancesbehindtheengine.排氣距離這可能會對人員和設(shè)備造成損害速度PowerPlantThiscancausedamagetopersonnelandequipment.Enginenoisecancausetemporaryandpermanent

lossofhearing.Youmustwearearprotectionwhenyouarenearanengineinoperation.暫時Velocity(vector)速度（矢量）Speed(scalar)速率（標(biāo)量）永遠(yuǎn)聽力喪失PowerPlantThefancowlsgiveanaerodynamically

smoothsurfaceoverthefancase.Thefancowlsattachtothefancowlsupportbeam.Thefancowlsopenformaintenance.Therearetwofancowlsforeachengine.Eachfancowlattachestothestrutwiththreehinges.風(fēng)扇整流罩空氣動力學(xué)上的光滑表面風(fēng)扇機(jī)匣支撐梁維護(hù)發(fā)動機(jī)支柱鉸鏈=support支柱strutPowerPlantThecombustor

mixesairfromthecompressorsandfuelfromthefuelnozzles.Thismixtureofairandfuelburnsinthecombustionchambertomakehotgases.ThehotgasesgototheHPT.=highpressure

turbine

高壓渦輪HPT燃燒器混合噴嘴混合物燃燒室氣體燃油PowerPlantTheseengineandairplane

accessoriesareonthefrontfaceoftheAGB:EEC

alternator,N2sensor,handcrankingpad,engineairstarter,integrateddrivegenerator(IDG)andhydraulicpump.發(fā)動機(jī)飛機(jī)附件附件齒輪箱交流發(fā)電機(jī)傳感器手搖盤液壓泵起動機(jī)綜合發(fā)電機(jī)=accessorygearbox附件齒輪箱AGB=integrateddrive

generator綜合傳動發(fā)電機(jī)IDG=electronicenginecontrol發(fā)動機(jī)電子控制EEC=

hydromechanical

unit液壓機(jī)械單元HMUPowerPlantTheseengineaccessoriesareontherearfaceoftheAGB:fuelpumppackage(fuelpumps,HMU,andmainoil/fuelheatexchanger),lubricationunitandscavengeoilfilter.燃油泵組件滑油/燃油熱交換器潤滑余油過濾器PowerPlantTheenginefuelpump

assembly

receivesfuelfromtheairplanefuelsystem.ThefuelpumpassemblysuppliespressurizedfueltotheservoandmeteringsectionsoftheHMU.ThefuelfilterinthepumpcleansthefuelthatgoestotheHMU.燃油泵總成接收增壓的過濾器伺服計量PowerPlant航空工程英語AMEnglish/7-2PowerPlantFuelgoesfromthefuelpumptotheIDG

oilcooler,thentotheoil/fuel

heatexchanger.Fromtheoil/fuelheatexchanger,thefuelgoesbacktothefuelpumpassembly.Thisfuelbecomeshighpressurefuel.ThishighpressurefuelgoestotheHMU.=integrateddrive

generator

整體驅(qū)動發(fā)電機(jī)IDG熱交換器整體驅(qū)動發(fā)電機(jī)燃油泵滑油冷卻器滑油/燃油返回高壓總成PowerPlantTheengineairsystemadjuststheclearancesbetweenthehighpressureturbine(HPT)bladesandshroudandthelowpressureturbine(LPT)bladesandshroud.Usually,theengineairsystemdecreasestheclearancebetweentherotorsandtheturbinecase.=lowpressure

turbine低壓渦輪LPT=high

pressure

turbine高壓渦輪HPT間隙高壓渦輪低壓渦輪葉片護(hù)罩外殼PowerPlantThesearethecompressorairflowcontrolsubsystems:variablestatorvanes(VSVs)andvariablebleedvalve(VBV).Thevariablestatorvanes(VSV)systemcontrolsthehighpressurecompressor(HPC)airflow.子系統(tǒng)可變定子葉片可調(diào)放氣活門高壓壓氣機(jī)=variablestator

vane可變定子葉片VSV=highpressure

compressor高壓壓氣機(jī)HPC=variablebleed

valve可變泄露閥VBVPowerPlantTherearetworeversethrust

interlock

solenoids,oneforeachengine.Eachreversethrustinterlocksolenoidlimits

therangeof

motionofareversethrustlever.Youcanmakethethrustreverserdeploy,butyoucannotincreasethereversethrustuntilthethrustreversersleevesarenearthefulldeployedposition.反推力互鎖電磁閥范圍運(yùn)動限制反推手柄套筒PowerPlantAtakeoff/go-around(TO/GA)switchandanautothrottle

disengageswitchareineachthrustleverassembly.TheTO/GAswitchletsthepilotsettheTO/GAfunction.Theautothrottledisengageswitchletsthepilotdisengagetheautothrottlefunction.Thecommand

buttonsfortheseswitchesarejustunderandontheforwardthrustleverknob.起飛復(fù)飛功能命令按鈕旋鈕飛行員自動油門斷開PowerPlantAtakeoff/go-around(TO/GA)swi