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29-10 系机务修订日修订版本

机务ATAATA主系统综述（General2.控制面板（Control

机务ATA

机务ATA件20.优先活门

机务ATAATA Isolation 活门（ReserveIsolation25.操作-面板、EDP、 Thesesystemsusehydraulic-Primaryflight-Highlift-Enginethrust

机务-Landinggear-includinglandinggearextension/retraction,doormechanisms,andnosewheelsteering.Thereare3hydraulicsystems:LeftL)、CenterC)、RightR). Eachsystem s4940+/-250(5000)psihydraulicpower.

机务Eachhydraulicsystemhas2pumps(notincludingtheramairturbine).Eachpumphasitsownpowersource(engineaccessorygearboxorelectric Thereare2typesofhydraulicpump-Primary-primarysourcehydraulic

机务-Demand-operateswhentheprimarypumpscannotmeetthehydraulicdemand.Theleftandrightsystemengine-drivenpumps(EDP)-primarypumps.

机务Theleftandrightsystemelectricmotorpumps(EMP)operateasdemandThecentersystemEMPs(C1andC2)canoperateasprimaryordemandpumps.ControlswitchesforthehydraulicsystemareonthehydrauliccontrolpanelontheP5.

机务Thehydrauliclineshaveacolorcodedbandmarkedwiththefirstletteroftheapplicablesystem.LeftsystemCentersystemRightsystem

机务Switchesonthehydrauliccontrolpanelcontrolthehydraulicpumps.Leftandrighthydraulicsystemprimarypumps-engine-drivenpumps(EDP).-alternateaction(push-button)

机务The4electricmotorpumps(EMP)havea3-positionselector:-OFF-pumpis-ON-pumpoperatesandmakesAUTO-pumpoperateswhencontrollogicsensesalargesystemdemandinflight.TheRAMAIRTURBINEswitchisatthetopofthepanel.电门位置信息送hydraulicinterfacefunctioninthecommoncomputingresource(CCR)cabinet.FAULTlighton-Pumpcasedrainfluid-Lowpump-Asystem

机务系统交互功能-HYDIF机务培训中Thehydraulicinterfacefunction(HYDIF)isasoftwarefunctionthatcontrolsandmonitorsthehydraulicsystem.TheHYDIFisahostedapplicationinthecommoncomputingresource(CCR)ThereisacopyoftheHYDIFsoftwarein3generalprocessormodules(GPM):2intheleftCCR1intherightCCR 系统交互功能-HYDIF机务培训中IntheleftCCRcabinet,oneHYDIFapplicationisprimaryandtheotherisTheprimaryapplicationcontrolstheleftsystemandhalfofthecenterhydraulicsystem.TheHYDIFapplicationintherightCCRcabinetcontrolstherightsystemandhalfofthecenterhydraulicsystem. 系统交互功能-HYDIF机务培训中IfeitherprimaryHYDIFfails,itisreplacedbythestandbyHYDIF.TheHYDIFsendsandreceivesdatathroughthecommondatanetwork系统交互功能-HYDIF机务培训中TheHYDIF制以下功Pumps(automaticoperation,andspeedIsolationRamairturbine(RAT)Fault油箱有预增压，防止气塞Thereare3reservoirs(L,C,andThereservoirsareseparated-typereservoirs(bootstrap).Theyusehydraulicpressuretopressurizethefluidinthereservoir.

机务机务Thecenterreservoirisadifferentpartnumberthantheleftandrightsystems.LargerstorageReservoirPressure

机务Thereservoirpressuretransducersensesfluidpressureinthereservoir.ThereisatransduceroneachPressuredatagoestotheTheHYDIFusesthedatafromthesetransducersforsystemcontroland

机务ReservoirTemperatureThereservoirtemperaturetransducersensesfluidtemperatureinthereservoir.ThereisatransduceroneachItsendsthedatatotheHYDIFforcontrolandindication. ty1.A tylinear

机务differentialtransformer(LVDT)sensesthefluid tyinthereservoir.ThereisoneLVDToneachTheLVDTssendthe tydatatothetyshowsin units(0.00=emptyand1.00=full).ReservoirVisual

机务Thevisualindicatorletsyouseethefluidtyinthereservoir.Theindicatorisontheforwardendofeachreservoir. tyindicationsfortheindicatorare:OVERFULL(amber/orangeFULL(greenREFILL(red ReservoirAuto-Bleed

机务Thereservoirauto-bleedvalveventsairfromThevalveisusuallyTheHYDIFsendsasignaltoenergizethesolenoidtoopentheauto-bleedvalveandsendtheairoutoftheTheauto-bleedvalveoperateswhentheontheHaselectrical ReservoirManualBleed1.ThemanualbleedvalveletsGetfluidsamples

机务Manuallybleedairfromthe

机务ReservoirDepressurizationEachreservoirhasadepressurization活门工作Thereservoirsmustbedepressurizedforsomemaintenanceproceduressuchascomponentremovalandreplacement. ReservoirRelief

机务Thereservoirreliefvalveprotectsthelowpressureportionofthereservoirfromover-pressureTheunwantedpressureandfluidgooverboardthroughatubetothedrain ReservoirDrain

机务Eachreservoirhasadrainvalveonthelower,forwardpartofeach Usethedrainvalvetoremovefluidfromthereservoir.

机务ReservoirSuctionShutoff油箱吸油关断活门防止在泄漏时，油液流。FortheleftandrightshutsofffluidflowtothemakessuretheEMPLhasenoughfluidtoForcentershutsofffluidflowtoEMPmakessureEMPC1hassufficientfluidtoThereare4accumulatorsinthehydraulicsystem:-Left-Right-Center-Noselanding

机务The-Absorbpressure-KeeppositivepressureintheTheaccumulatorachargingvalve

机务

机务AccumulatorChargingYouusetheaccumulatorchargingmanifold(ACM)tochargetheThemanifoldhasapressuregageandachargingvalve.Thereare4ACMsinthehydraulicLeftRight

-Center-NoselandingEDP和发动机供油关断活门机务培训中 The2engine-drivenpumps(EDP)supplyprimaryhydraulicpressurefortheleftandrighthydraulicsystems.EDP TheEDPhasaninternaldepressurizationthesolenoidisenergized,When7.EDP和发动机供油关断活门机务培训中Theenginesupplyshutoffvalve发动 活门关闭，whenasignalcomesfromtherelatedenginefireswitch.Whentheenginefireswitchisused,-Closesthesupplyshutoff-EnergizestheEDPdepressurization

机务Theleftandrightsystemelectricmotorpumps(EMP)arethedemandpumpsfortheleftandrighthydraulicEMPspeedchangesfordifferentEMPsgetpowerfromcommonmotorstartcontrollers.AtemperaturesensorontheelectricmotorsendsdatatotheHYDIF.

机务Duringtake-offandlanding,theleftandrightEMPsoperate.-Thisisbecausetheremaybeanincreasedflowdemandfromflightcontrols,thrustreversers,andspeedbrakes.

机务TheC1andC2electricmotorpumps(EMP)supplypressuretothecenterhydraulicThepumpsare-Automaticallybythehydraulicinterfacefunction(HYDIF)-ManuallybyswitchesontheP5

机务ThecenterEMPsalternateasprimaryand-Theprimarypumpoperatescontinuouslyduring-Changefromprimarytodemandisbasedoncalendar-ThedemandpumpoperatesonTheC1pumpandtheC2pumpcanoperatedifferentThehydraulicsystemEMPsgetpowerfromtheelectricalsystemcommonmotorstartercontrollers机务The3casedrainfiltermodulesremoveparticlesfromtherelatedhydraulicpumpscasedrain-PumpsusethisfluidforcoolingandThereisafiltermoduleforeachhydraulicsystem.机务组件有以下部件滤压差传感EDP度传感器(leftandrightsystems2checkvalves(onedownstreamofeachThermalbypass机务ThecasedrainfiltermoduledifferentialpressuretransducerssendthepressuredatatothehydraulicinterfacefunctionThehydrauliclinesinsidethefuelaretitanium.

机务Topreventinducedelectricalcurrentinthetubingduringalightning-strike,thehydrauliclineshavestaticdissipativeisolatorfittings.-ThesearetubeThepressurefilter

机务RemovesparticlesfromthehydraulicpressurefluidMonitorspumpandsystemThereare3pressurefiltermodules-oneforeachsystem(L,R,andC).Asystempressurereliefvalveopensat6000psitorelieveoverpressuretothereturn组件包含Asystempressure2pumppressureAgroundservicereturnandsupplyquick2replaceable

机务Checkvalves(topreventhydraulicDifferentialpressure(popout)indicators(tosenseacloggedfilterandsupplyavisualThefilterelementremovesparticlesfromthefluid.Theelementsareinthefilter

机务Thefilterelementscannotbe-Replace

机务ThepressurefiltermoduledifferentialpressureindicatorshowswhenitisnecessarytochangetheAredbuttonpopsupwhenthefilter回油滤组件、滤芯、压差指示器、旁通心 Thereturnfiltermoduleremovesparticlesfromthehydraulicfluidbeforeitgoesbackintothereservoir.-Thereisareturnfiltermoduleforeachsystem(L,C,andR).Eachreturnfiltermodule-Differentialpressure(popout)-Filterbowland-Checkvalves(preventhydraulic-Bypass Ifthefilterclogs,aninternalbypassvalve18.回油滤组件、滤芯、压差指示器、旁通心 Thereturnfiltermodulefilterelementremovesparticlesfromthefluid.TheelementsareinsidethefilterThefilterelementscannotbe-Replace

机务系统向以下系统供压：flightcontrolactuation,high-lift(flapsandslats),enginethrustreversers,andlandinggear-Theprioritizationsystemamainlandinggearpriorityahighliftpriority-Together,thesevalvesacttoprioritizetheflowinflighttothefollowingfunctions;PrimaryflightHighLanding优先活门-主起落架优先活务培训中Themainlandinggearpriorityvalve关闭，停 ThemainlandinggearpriorityvalvemakessurecriticalsystemsgethydraulicpowerifdemandissohighthatsystempressureThevalveisspring-loadedandpressure-Itisusually-Ifpressuredecreasestoapre-setlevel,thespringclosesthevalvetoremoveflowtothatsystem.优先活门-增升系统优先活务培训中Thehighliftpriorityvalve关闭，停止向增升系统供 -Thevalvecloseswhensystempressureislessthan3500psi.Theisolationsystempreserveshydraulicsystemfluidforprimary

机务controlsintheeventofanengineburstorothereventthatcausesasevereleakintheTheIsolationsystemsconsistsAlternateextendisolationvalveReservesteeringisolationvalveNosegearisolationvalve

机务Thealternateextensionisolationvalvekeepscenterhydraulicsystemfluidforalternategearextensionifthereisalargeleakinthesystem.

机务 Thereservesteeringisolationvalve(RSIV)closestokeepthenosewheelsteeringfunctionwhenthereisaleakinthemainlandinggeartrucktiltportionofthecenterhydraulicsystem.

机务ThenoselandinggearisolationvalveKeepsthecentersystemfluidifthereisaleakinthetubingbetweenthewheelwellandthenosegear.Decreasesthepossibilityoffluidlossduringthecruisephaseofaflight.操作-面板、EDP、机务培训中ThehydrauliccontrolpanelisontheP5 Thereisaswitchforeachelectricmotorpump(EMP)andengine-drivenpump(EDP). TheEMPswitchesareusuallysettoAUTOforin-flightoperation.-Thehydraulicinterfacefunction(HYDIF)providesautomaticcontroloftheEMPs. TheEMPswitchesaresettoONforground TheEDPswitchesarealternateaction(push-button)switches.25.操作-面板、EDP、机务培训中Inmaintenancemode，HYDIFwillmonitorforsystempressure,pumpoverheat,andsystemoverheatbutwillnotcyclethepumpOFF. Hydraulicshasthehighestloadpriorityonthegroundwhentheairplaneisinmaintenancemode.25.操作-面板、EDP、机务培训中 Thereisapush-buttonswitchonthehydrauliccontrolpanelforeachenginedrivenpu