《航空工程英語》課件-第四章

4-1Airframe(ME)航空工程英語Airframe(ME)ThispartoftheA/Csystemcontrolsthetemperatureinthetwozones,theflightcompartmentandthepassengercabin.Thetemperaturechangesaremadebythemixvalvewithsignalsfromthetemperatureregulator.空調(diào)系統(tǒng)區(qū)域駕駛艙客艙溫度混合閥，混氣閥信號調(diào)節(jié)器Airframe(ME)Themainairdistributionsystemcangetairfromairconditioning

packs,groundconditionedairsourceorrecirculationsystem.Themaindistributionmanifoldcollectsandmixesairfromanycombinationofthesourcesandthensuppliesairtothepassengercompartmentthroughriserductsandanoverhead

distributionmanifold.分配空調(diào)組件調(diào)節(jié)空氣源循環(huán)組合客艙頭頂分配總管總管，歧管Airframe(ME)Themainairdistributioncomponentsareinthedistributioncompartmentaftoftheforward

cargocompartment.Therearemanifoldsandductsalongthesidewallsandabovetheceilingareaofthepassengercabin.分配組件前貨艙總管，歧管管道側(cè)壁天花板Airframe(ME)Thereisanaircyclemachine(ACM)foreachoftheleftandrightpacksystems.TheACMisathree-wheel

airbearingaircyclemachine.Itdecreasesairtemperaturebyexpansionthroughaturbine.空氣循環(huán)機組件三輪空氣軸承膨脹渦輪Airframe(ME)Itiscomprisedofturbine,compressorandfanwhichareconnectedbyacommon

shaft.TheairbearingslettheACMturnathighspeedwithlittlefriction.Cooledbleedairfromtheprimary

heatexchangerenterstheaircyclemachineandiscompressed.Thecompressedairthengoestoasecondaryheatexchangerandbacktotheaircyclemachine.渦輪壓縮機風(fēng)扇共同的軸摩擦主要的，一級熱交換器空氣循環(huán)機壓縮二級4-2Airframe(ME)航空工程英語Airframe(ME)Theflightcontrolskeeptheairplaneatthenecessaryattitudeduringflight.Theyhavemovablesurfacesonthewingandtheempennage.Theprimaryflightcontrolsystemmovestheairplaneaboutthreeaxes:lateral,longitudinal,andvertical.Thesecondaryflightcontrolsimprovetheliftandhandlingpropertiesoftheairplane.飛行操縱姿態(tài)可動表面機翼尾翼主飛行控制軸（復(fù)數(shù)）橫向縱向垂直二次飛行控制，輔助飛行控制升力操縱性能Airframe(ME)Roll----Rotatearoundthelongitudinalaxis

AileronsPitch----RotatearoundthelateralaxisElevatorYaw----RotatearoundtheverticalaxisRudderAirframe(ME)Theflap

controllevermovesthetrailingedgeflapcontrolvalve.Hydraulicpressuregoesthroughthevalveanddrivesthehydraulicmotor.Thehydraulicmotorsuppliespowertotheflapdrivesystemandtheflapsmove.Follow-up

cablesgivefeedbacktothetrailingedgeflapcontrolvalvetostoptheflapsatthecommandedposition.襟翼操縱桿后緣閥門驅(qū)動液壓馬達動力隨動，跟隨鋼索反饋指令A(yù)irframe(ME)Thespeedbrakelevermovescablesthatcontrolthespoilermixer.Themixermovesthespoiler

wing

cablesthatcontroltheflightspoileractuators.Themixeralsomovesthegroundspoilercontrolvalve.Thevalvesupplieshydraulicpressuretothegroundspoileractuatorstoraisethespoilers.剎車桿擾流板混合器擾流板機翼鋼索作動筒地面擾流板升起Airframe(ME)ag,act[L]=todoordrive做；驅(qū)使agent[ag做；-entn.人→辦事的人]n.代理人agentialadj.代理人的;起媒介作用的agency

[ag做；-encyn.表性質(zhì)或狀態(tài)→辦事的能力或場所]n.①力量；作用/

humanagency人力；②代理處；機構(gòu)agenda[ag做；-enda(-a表復(fù)數(shù)）n.事情→要辦的事項]n.議事日程agile[ag做；-ileadj.能...的→能干的]adj.敏捷的；靈活的agilityn.敏捷；靈活actuate[act做；-u-；-atev.使...]v.驅(qū)動，激勵，作動actuationn.驅(qū)動，激勵；開動actuator

n.[機]促動器；傳動機構(gòu)；作動筒actuatorn.作動筒Airframe(ME)Thepilots

manuallycontrolthepositionofthehorizontalstabilizerwiththestabilizertrim

switches.Also,thepilotscanusethestabilizertrimwheelsoneachsideofthecontrolstand.飛行員手動水平安定面配平開關(guān)安定面配平手輪控制臺Airframe(ME)TheLEdevicesincludetwoKruegerflapsandfourslatsontheleadingedgeofeachwing.Duringcruise,thesesurfacesfullyretract.Thesesurfacesextendduringtakeofftoincreaselift,whichpermitsslowerspeedsforairplanerotation.Duringlanding,theLEslatsfullyextendtoincreaseliftandhelppreventastall.前緣裝置克魯格襟翼縫翼前緣巡航收回起飛速度旋轉(zhuǎn)著陸失速4-3Airframe(ME)航空工程英語Airframe(ME)Wingfueltankaccesspanelspermitentryintoeachfuelandsurgetank.Thewingfueltankaccesspanelsareonthebottomwingskin.Onecentertankaccesspanelpermitsentryintothecentertankthroughthefuselage.Thispanelisintheleftairconditioningcompartment.接近面板通氣油箱燃油箱底部蒙皮中央油箱機身空調(diào)艙Airframe(ME)Anaircrafthydraulicsystemisasourceofpressureenergyforactivatingawiderangeofaircraftsystemsandcomponentssuchaslandinggear,wheelbrakes,flightcontrolsandnosewheelsteering.Allhydraulicsystemsmust,therefore,containapumptoprovidethepressure,areservoiroffluidforthepumptodrawupon,actuatorstooperatevariouscomponentslistedaboveandselectorswithwhichthedesiredfunctionarecontrolled.液壓的激活各種起落架輪式剎車飛行操縱前輪轉(zhuǎn)彎泵油箱作動筒選擇器部件Airframe(ME)Thehydraulicpowertransferunit(PTU)systemsuppliesalternatehydraulicpressuretotheleadingedge

flapsandslatswhenhydraulicsystemBenginedrivenpump(EDP)pressureisbelownormal.動力轉(zhuǎn)換組件備用前緣襟翼縫翼發(fā)動機驅(qū)動泵正常Airframe(ME)Thewingthermalanti-iceandtheengineinletcowlthermalanti-icesystemsusehotbleedairtopreventice.Theairdataprobesuseelectricheattopreventice.Flightdeckwindowsuseelectricheattopreventiceformationonthewindows.Thewaterandwastelinesanddrainsuseelectricheattopreventice.機翼熱防冰發(fā)動機進氣口整流罩防冰大氣數(shù)據(jù)探頭電加熱甲板形成污水，廢物排水Airframe(ME)Thelandinggearprovidessupportfortheairplanestaticandgroundmaneuveringconditions.Thelandinggearalsoreactstoairplaneloadforcesthataregeneratedduringairplanemovement.The737airplanehasatricycletypelandinggearwithair/oilshockstruts.起落架靜態(tài)操縱載荷運動三輪式油/氣式減震緩沖支柱4-4Airframe(ME)航空工程英語Airframe(ME)Thenoselandinggear

shockstrut

absorbslandingforcesandtransmits

verticalloadstotheairplanestructure.Theshockstrutsarestandardair-oilshockabsorbers.Theyhaveaninnercylinderwhichmovesinanoutercylinder.Compressed

nitrogenisintheupperpartoftheshockstrut.前起落架減震支柱吸收著陸傳遞垂直結(jié)構(gòu)標(biāo)準(zhǔn)內(nèi)筒外筒壓縮氮氣上部Airframe(ME)Enginebleedaircomesfromthe5thand9thstagesofthehighpressurecompressor.Ahighstage

regulatorandhighstagevalvecontroltheflowof9thstagebleedair.The5thstagecheckvalve

prevents

reverseflowintothe5thstage.引氣壓氣機高級調(diào)節(jié)器單向閥防止逆向Airframe(ME)Thebleedair

precoolersystemcontrolsthetemperatureoftheenginebleedairbeforeitgoesintothepneumaticmanifold.Eachenginehasaprecoolersyst