Chapter 49APU.docx

Chapter 49APU.docx

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Chapter49APU

Chapter49APU

49APU

THEAPUAIRINTAKEFLAPOPENSWHEN:

TheMasterSwitchissettoON.

TheSTARTP/Bispressed.

ThebatteriesaresettoON.

A

49APU

THEAPU"FUELLOPR"ECAMWARNINGINDICATES:

Thatfuelpressureis<22psi.

LowfuelpressureatFuelControlUnit（FCU）inlet.

Thatthewingtankboostpumpisinoperative.

b

49APU

THEIGNITIONISCONTROLLED:

ONandOFFbythemasterswitch.

ONandOFFbytheElectronicControlBox（ECB）.

ONbytheECB,OFFbytheignitionunit.

b

49APU

THEMAINCOMPONENT（S）OFTHEFUELSYSTEMIS（ARE）:

TheFuelControlUnit（FCU）.

TheFuelIsolationValve.

ThePilotInjectors.

a

49APU

THEAPUACGENERATOR:

Iscooledbytheventilationcoolingfan.

Isdisconnectedbyusingthede-oilsolenoid.

Iscooledbytheoilsystem.

c

49APU

FUELPRESSUREISUSEDTOOPERATE:

TheInletGuideVane（IGV）actuatoronly.

Thebleedcontrolvalveactuatoronly.

TheIGVactuatorandthebleedcontrolvalveactuator.

c

49APU

ONGROUND,THENORMALAPUN（RPM）,EXCEPTDURINGENGINESTART,IS:

95%.

99%.

101%.

b

49APU

THEAUXILIARYPOWERUNIT（APU）PROVIDES:

Pneumaticandelectricalpower.

Pneumaticandhydraulicpower.

Electricalandhydraulicpower.

A

49APU

APUOPERATIONISCONTROLLEDANDMONITOREDBYTHE:

FuelControlUnit（FCU）.

CentralizedFaultDisplayInterfaceUnit（CFDIU）.

ElectronicControlBox（ECB）.

C

49APU

DURINGAPUSHUTDOWNTHEFUELINTHEPILOTFUELINJECTORSANDMANIFOLDISPURGED:

TotheAPUdrainmast.

TotheAPUexhaust.

Intothecombustor.

b

在辅助动力装置关闭期间，飞行员燃油输入器和总管中的燃油被送到

APU排放桅杆

APU排气

燃烧室

49APU

LOADCOMPRESSORSURGEPROTECTIONISPROVIDEDBY:

CompletelyclosingtheInletGuideVanes（IGV's）.

Reducingspeeddownto75%speed.

TheBleedControlValve,dischargingexcessiveairtotheexhaust.

c

49APU

THEAPUFAULTANDMASTERCAUTIONLIGHTCOMEONANDASINGLECHIMEISHEARDWHEN:

ThereisanAPUemergencyshutdownonly.

ThereisanAPUemergencyorautoshutdown.

Thestartpushbuttonisnotpressedwithin30secondsafteroperatingtheMasterSwitch.

b

49APU

THEAIRINTAKEFLAPACTUATOR:

ModulatestheairflowtotheAPUdependingontheflowdemand.

Doesnotmodulateandmovestheintakeflapinwardstoclosetheairinlet.

Doesnotmodulateandmovestheintakeflapinwardstoopentheairinlet.

c

进气襟翼作动器

调节气流进入APU取决于流量要求

不调节也不把进口襟翼朝里移动来关闭空气输入

不调节也不把进口襟翼朝里移动来打开空气输入

49APU

THEAPUOILCOOLERCOOLSTHEOIL:

Inthesupplylinedownstreamofthepressurepump.

InthescavengelinedownstreamoftheACgenerator.

Inthescavengelinedownstreamoftherearbearing.

a

49APU

THEAPUDRAINTANKISEMPTIED:

Automatically,withtheA/Cinflightandthespeed>>200knots.

Automatically,atAPUshutdown.

Automatically,beforeAPUstart.

A

49APU

THEMAJORASSEMBLIESARETHELOADCOMPRESSOR,THEACCESSORYGEARBOX（AGB）ANDTHE:

Powersection.InletGuideVanes（IGVs）.

Inletplenum.

A

49APU

THEAUXILIARYPOWERUNIT（APU）DOORSARESECUREDBY:

Fivelatchesontheleftdoorandfivelatchesontherightdoor.

Fivelatchesontheleftdoorandtwolatchesontherightdoor.

Twolatchesontheleftdoorandfivelatchesontherightdoor.

B

49APU

ITISNECESSARYBEFORETHEAPUREMOVALANDINSTALLATIONTODEPRESSURIZE:

Greenandbluehydraulicsystems.

Greenandyellowhydraulicsystems.

Yellowandbluehydraulicsystems.

B

49APU

IFANAUTOSHUTDOWNOCCURS:

TheAPUbleedswitchFAULTlightilluminates.

TheMastercautionandAPUmasterswitchFAULTilluminate,thesinglechimesoundsandtheECAMmessageappears.

TheMasterwarningilluminatesandthecontinuouschimesounds.

b

49APU

THEELECTRONICCONTROLBOX（ECB）RECEIVESFLT/GRDINFORMATIONFROM:

LGCIU2.

LGCIU1.

DirectlyfromL/Gproximitysensors.

B

49APU

THEINLETGUIDEVANES（IGVS）AREFULLYOPEN:

DuringAPUstartmode.

Anytimethatthebleedloadvalveisclosed.

DuringMainEngineStart（MES）load.

C

49APU

FUELPRESSUREISUSEDTOOPERATE:

TheInletGuideVane（IGV）actuatoronly.

Thebleedcontrolvalveactuatoronly.

TheIGVactuatorandthebleedcontrolvalveactuator.

C

49APU

THEELECTRONICCONTROLBOX（ECB）RESETSTHEHOURSANDCYCLESTOZERO:

Automaticallyafter64flightlegs.

WhenanewAPUserialnumberisdetected.

WhentheECBisdisconnectedandreconnected.

B

49APU

THEAPUOILSYSTEMINCLUDES:

Twopressurefilters.

Onepressurefilterandonescavengefilter.

Oneoilfilter.

B

49APU

THEAPUSTARTERISDE-ENERGIZEDAT:

55%.

95%.

7%.

A

49APU

WITHTHEAPUBLEEDVALVEOPEN,RELEASINGTHEMASTERSWITCHCAUSESANAPUSHUTDOWN:

Immediately.

Onlyafterthecooldownperiodhaselapsed.

Never,theAPUbleedvalvemustbeclosed.

B

49APU

THECOMPRESSORDESIGNTYPEISA:

Two-stagecentrifugal.

Singlestagecentrifugal.

Two-stageaxial.

B

压气机的设计型号是一种

两极离心式

单极离心式

两极轴式

49APU

THEPOWERUPTEST（PUT）ISPERFORMEDBYTHEELECTRONICCONTROLBOXWHENTHE:

MasterswitchissettoON.

Startermotorengages.

STARTpushbuttonispressedin.

A

电子控制盒何时完成通电测试？

主电门打开

启动马达通电

START按钮被按下

49APU

THEMAINFEATURESOFTHEACGENERATORARE:

45KVA,115V,50Hz.

90KVA,28V.

90KVA,115V,400Hz,3Phases.

C

49APUTHEELECTRONICCONTROLBOX（ECB）ISLOCATED:

Inthebulkcargocompartment.

Intheforwardcargocompartment.

IntheAPUcompartment.

A

49APU

THE"3WAYSOLENOIDVALVE"INTHEFUELSYSTEMISMOUNTED:

Onthefuelnozzlemanifold.

Inthefueldrainline.

OntheFuelControlUnit.

C

49APU

DURINGAUXILIARYPOWERUNIT（APU）START,THEELECTRONICCONTROLBOX（ECB）SWITCHESTHEIGNITIONONBETWEEN:

10%to65%rpm.

10%to50%rpm.

Initialcrankupto55%rpm.

C

49APU

THEAIRINTAKEDUCTISFITTEDTO:

Thelefthandaccessdoor.

TheAPUinletplenum.

Therighthandaccessdoor.

C

空气进口管道安装在

接近门左边

APU进口通风

接近门左边

49APU

TOENERGIZETHESTARTER,THEFOLLOWINGCONDITIONSMUSTBEMET:

TheElectronicControlBox（ECB）ispowered,theSTARTp/bispressedandtheairintakeflapisfullyopen.

TheECBispowered,theSTARTp/bispressedandtheairintakeflapisfullyclosed.

ThemasterswitchissettoONonly.

A

49APU

FORFUELSCHEDULE,THEELECTRONICCONTROLBOX（ECB）CONTROLSTHE:

Fuelservovalve.

Pressureregulator.

LowPressure（LP）Pump.

A

对于燃油表电子控制盒控制

燃油伺服植

压力调节器

低压泵

49APU

THEFUELSYSTEMSERVOVALVEISMOUNTED:

Onthefuelnozzlemanifold.

OntheFuelControlUnit.

Ontherightsideofthegearbox.

B

49APU

THECOMPONENTREGULATINGTHEAIRFLOWTOTHEPNEUMATICSYSTEMISTHE:

Bleedcontrolvalve.

InletGuideVanes（IGVs）.

ElectronicControlBox（ECB）.

B

49APU

THEFUELDIVIDERANDDRAINVALVE（FDDVA）ISLOCATEDONTHE:

RightsideoftheAPU.

LeftsideoftheAPU,forwardofthefuelmanifold.

APUgearbox.

B

49APU

THECOMPONENTSTHATINCLUDEAVISUALINDICATORFORMAINTENANCEARETHE:

BleedcontrolvalveandInletGuideVanes（IGVs）.

IGVsandElectronicControlBox（ECB）.

BleedcontrolvalveandECB.

A

49APU

THECOMBUSTIONCHAMBERCASEDRAINVALVEISLOCATED:

Abovethecombustionchamber.

Onthetopofthegearbox.

Belowthecombustionchamber.

C

49APU

THEAIRISDRAWNTHROUGHTHEOILCOOLER:

Byanelectricfan.

Byagearboxdrivenfan.

Oilisnotcooledbyair.

B

49APU

WITHTHEAIRCRAFTONGROUND,ANAUTOSHUTDOWNWILLBECAUSEDBY:

PerformingaselftestthroughtheMCDU.

AnAPUoilovertemperature.

AnAPUfuelfilterclogging.

B

49APU

WITHTHEA/CONGROUND,ONEOFTHEFOLLOWINGOILSYSTEMMALFUNCTIONSCAUSESANAPUAUTOSHUTDOWN:

Highoilpressure.

Lowoiltemperature.

Lowoilpressure.

C

49APU

THEDE-OILSOLENOIDVALVEOPENSTO:

Reducetheloadontheoilpumpduringthestartcycle.

Allowtheoiltobypasstheoilcoolerduringcoldstarts.

Reducetheflowoffuelduringtheshutdowncycle.

A

打开放油电磁线圈活门的目的是：

在起始循环期间降低滑油泵的负载

在冷启动时允许滑油从旁边流入滑油冷却机中

在关闭循环期间降低燃油的流量

49APU

THEAPUACGENERATOR:

Iscooledbytheventilationcoolingfan.

Isdisconnectedbyusingthede-oilsolenoid.

Iscooledbytheoilsystem.

C

49APU

THEPRIORITYRESPECTEDWHENTHEAPUSUPPLIESTHEAIRCRAFTWITHAIRANDELECTRICALPOWERIS:

Air,thenelectricalpower,below8000ft.

Electricalpowerhaspriorityatanyaltitude.

Airsupplyhaspriorityatanyaltitude.

B

49APU

THEAPUOILQUANTITYINDICATIONISFOUND:

OntheECAMEWD.

OntheECAMSD.

ThereisnoAPUoilquantityindication.

C

49APU

WHENOPENINGTHEAPUCOWLDOORS:

Openthelefthanddoorfirst.

Itdoesnotmatterwhichdoorisopenedfirst.

Opentherighthanddoorfirst.

A

49APU

IFTHEACTUATORFAILS,THEAPUINLETFLAPCANBEOPENED:

Byamanualoverrideontheactuator.

Byamanualoverrideonthediverter.

Theactuatormustbereplaced.

A

49APU

THEELECTRONICCONTROLBOX（ECB）RECEIVESANA/CONGROUNDDISCRETIMPUTSIGNALFROMWHICHCOMPUTER（S）:

LGCIU1

LGCIU2

LGCIU1or2dependingwhichoneisactive.

A

49APU

THEELECTRONICCONTROLBOX（ECB）RECEIVESAMAINENGINESTART（MES）SIGNALFROM:

EngineInterfaceUnits（EIUs）.

InletGuideVanes（IGVs）.

BleedMonitoringComputers（BMCs）.

A

49APU

ONGROUND,THEELECTRONICCONTROLBOX（ECB）REMOVESPOWERTOTHESTARTERWHENTHEAPURPMIS:

55%.

50%.

60%.

B

49APU

THEMAINCOMPONENTSOFTHELOADCOMPRESSORARE:

Guidevaneassy,impeller,diffuser,scroll.

Loadcontrolvalve,scroll,impeller.

Impeller,guidevaneassy,de-swirlchamber.

A

装载压气机的主要部件有：

导向叶片组件，叶轮，扩散机和卷轴

负载控制阀门，卷轴，和叶轮

叶轮，导向叶片组件和反旋转舱

49APU

THEAPUSTARTERANDTHEIGNITIONSYSTEMAREDE-ENERGIZEDA