机务英语第四册口语Word格式文档下载.docx

机务英语第四册口语Word格式文档下载.docx

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LessonTwelveNavigationP.149

LessonThirteenAutoFlightP.153

LessonFourteenHydraulicSystemP.158

LessonFifteenElectricalPowerP.163

LessonSixteenNavigationP.167

LessonSeventeenFuelP.171

LessonEighteenCentreMaintenanceSystemP.177

LessonNineteenOilP.181

LessonTwentyFlightControlP.184

LessonOne

AirconditioningSystem

Partone:

Readthefollowingpassageandmemoryasmuchasyoucan,andthendescribethediagrambelowwithyourownwords.

Theairconditioningsystemsuppliespressurizationtothewholepassengercompartment,thecockpit,allthecargocompartmentsandtheavioniccompartment.

Thereareareasinthefuselagethatarenotpressurizedandtheyareseparatedbypressurebulkheads.

Areasthatarenotpressurizedarethelandinggearbays,theradomeandthetailcone.

Exercises:

1

QuestionstotheText:

1.Whereispressurizedbytheairconditioningsystem?

2.Arethereanyun-pressurizedareas?

Whatarethey?

3.Radomeispressurized,isn’tit?

Exercises2:

DescribeFig.1withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.1

Fig.1Airconditioningsystem

PartTwo:

Electricityismainlyusedforelectricalheating,forlighting,toproducemechanicalpower,andlastbutnotleasttosupplyalltheelectronicdevices.

Electricalpowerforheatingismainlyusedinthegalleysforovensandcoffeemachines.Itisalsousedinantiicesystemstopreventicingofairdataprobes,watersystemsandcockpitwindows.

Lightingequipmentismainlyusedinthecockpittoprovidesufficientgeneralbrightnessandtoilluminatetheworkingareaslikepanelsandmapsandinthecabinforpassengercomfortandsafetyandoutsidetheaircrafttomaketheaircraftvisibleforotheraircraftandtoilluminatethegroundduringtakeoffandlanding.

Mechanicalpowerisproducedbyelectricmotors,whicharemainlyusedtodrivepumps,forexample,fuelandhydraulicpumpsortodriveavalvetothecommandedpositioninthefuel,hydraulicorairconditioningsystemortomovemechanicalpartslikedoorsandcargocontainers.

Electronicdevicesthatareusedinnearlyallaircraftsystemsarethecomputersforsystemcontrolandmonitoringandthecontrolinputsandindicationsinthecockpitandsensorsthroughoutthewholeaircraft.

Exercise1:

1.Whatiselectricalpowerusedfor?

2.Wheredoestheheatingforovenandcoffeemachinescomefrom?

3.Whatislightingequipmentusedfor?

4.Arethereanylightingequipmentoutsidetheaircraft?

5.Whatarethepurposeforthelightsoutsidetheaircraft?

6.Howisthevalvecontrolled?

7.Electronicdevicesareusedtocontrolvarioussystems,aren’tthey?

DescribeFig.2withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.2ElectricalPower

LessonTwo

AutoFlight

PartOne:

Theaircrafthasthreeaxes.Theyarecalled:

---thelongitudinalorx--axis

---andthelateralory—axis

---theverticalorz--axis

TheAutopilotcontrolstheaircraftattitudedirectlyaround2axes,byelevatordeflectionsfromthepitchchannelandailerondeflectionsfromtherollchannel.

AutolandAutopilotscanalsocontroltheaircraftattitudedirectlyaroundtheverticalaxisbyrudderdeflectionsfromtheyawchannel.

TheYawdampercontrolstheruddertodampendutchrolloscillations（swings）duringtheentireflight.

Thepitchtrimsystemmovesthehorizontalstabilizer,tocompensateforchangesinthecenterofgravityandcenterofliftduringflight.

Autothrottleistheonlysystemthatcancontrolanaircraftmotionalonganaxis,

calledatranslatorymotion.Itgeneratesaccelerationsinthex--axisbycontrollingtheenginethrust.

1.Howmanyaxesdoesanaircraftmovealong?

2.WhatisthefunctionoftheYawDamper?

3.WhatisthefunctionofthePitchtrim?

4.Howdoesanaircraftaccelerate?

5.Howisverticalmovementofanaircraftachieved?

Exercise2:

DescribeFig.3withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.3AxesofAnAircraft

Fig.3PitchYawandRoll

Readthefollowingpassageandmemoryasmuchasyoucan,andthendescribethediagrambelowwithyourownwords.

Allmodernaircraftareequippedwithautoflightsystems.

Typically,anautoflightsystemhasthefollowingsubsystems:

--theAutopilot,orAPinshort

--theFlightDirector,orFD飞行指引

--theAutothrottleSystem,usuallyabbreviatedasATS

--theAutomaticPitchTrimSystem,alsocalledAutotrim

--andtheYawDamperSystem,orYD

TheFlightDirectorshowsthepilothowtoflytheaircraftmanually.ThisisdonebyFlightDirectorCommandbarsinthePrimaryFlightDisplay--PFDorAttitudeDirectorIndicator--ADI.

TheAutothrottleSystemreducestheworkloadforthepilotsbycontrollingtheenginepowerautomatically.

Autotrimmaintainspitchstabilityduringallphasesoftheflight.Itusuallyadjuststhehorizontalstabilizerautomatically.

TheYawDamperimprovesthedynamicstabilityoftheaircraftduringthewholeflight.

TheFMSdoesnavigationandperformancecalculationsforoptimumflightperformance.

Questionstothetext:

1.Howmanysubsystemsdoesautoflightconsistof?

2.Whatdoesflightdirectorshow?

3.WhatisthefunctionofAutothrottle?

4.Whatisautotrimusedfor?

5.Whichsubsystemcanimprovetheaircraftdynamicstability?

6.whatdoesFMCstandfor?

DescribeFig.4withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.4AutoflightSystem

LessonThree

AirSource

Onaircraftpneumaticenergyisusedforenginestarting,cabinpressurizationandairconditioning,winganti--icing,waterreservoirpressurizationandhydraulicreservoirpressurizationonsomeaircraft.

Youmayfindothersystemsandcomponentsthatalsoworkpneumatically,forinstance,air--drivenpumpsforhydraulicsorairmotorsusedforslatoperation.Inanypneumaticsystems,airpressureandtemperatureneedtobeasconstant

aspossibletosupportthedifferentconsumerseffectively.

1.Whatisthefunctionofaircraftpneumaticsystem?

2.whyconstantairpressureandtemperatureareneeded?

3.Doesair-drivenworkpneumaticallyorhydraulically?

4.Airmotorsareusedforhydraulicsystemoperation,aren’tthey?

DescribeFig.5withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.5PneumaticSystem

Amodularengineconstructionisusedonallmodernaircraft.Thewholeengineissplitupintoasetofseparatemajormodules.Theseenginemodulesarepre--assembledandbalanced.Theyarespeciallydesignedtoberemovedandreplacedmoreeasily.Themodulesremainintactafterremovalanddonotfalltopieces.

Themajorenginemodulesarefurtherdividedintoindividualmodules.Thenumberofmodulesdependsonthemanufacturerandontheenginetype.

1.Whyareenginesaredesignedintoasetofseparatemodules?

2.Whatwouldbelikeifengineisdisassembled?

3.Cantheenginemodulebefurtherdivided?

4.Howmanymodulesdoesanenginecontain?

DescribeFig.6withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.

Fig.6.EngineConstruction

LessonFour

Communication

Forcommunicationinaircraftweneedtwogeneralcomponentsfornearlyallsystems:

Microphonestransfertheacousticinformationintoanelectricalsignal.Loudspeakerstransfertheelectricalsignalbackintoacousticalinformation.Differenttypesofmicrophoneareusedinthecockpit.Anareamicrophone,whichisusuallyinstalledontheceilingpanel,isusedbythevoicerecordertorecordthegeneralcockpitsounds;

ahand—heldmicrophoneisusedforannouncementstothepassengers;

andintegratedmicrophonesarecontainedintheoxygenmaskortheheadset.Thesearecalledtheboomset.

1.Whatmakesitpossibleforthecommunicationinaircraft?

2.Whatisthefunctionofamicrophone?

3.Whichcomponenttransfertheelectricalsignalintoacousticalinformation?

4.Howmanytypesofmicrophoneareusedinthecockpit?

5.Whattypeofmicrophonedoesthevoicerecorderuse?

6.Whereisthevoicerecordermicrophonelocated?

DescribeFig.7withwhatyouhavelearnedinthetext.Speakasmuchaspossiblewithyourownwords.