AircraftStructure航空工程技術英語目錄CONTENTSB737Fuselage01DimensionsandZones02TypicalDamages03ComparisonofAircraftModels04AircraftNavigation05B737FuselagePART01B737FuselageTheB737isalowwingairplane.B737has

semi-monocoque

fuselageandfullyretractablelandinggear.Twopowerplantsarelocatedunderthewingsonshortstruts.半硬殼式B737FuselageThepylonisastructureusedtomountexternalequipmentsuchasenginesand

weapon

onanaircraft.Thepurposeoftheenginepylonmountedunderneatheachwingis:武器tosupporttheenginetotransmittheenginethrusttotheaircrafttorouteandsupportallthesystemsrelatedtotheengine(electricalwiring,hydraulicandfuellinesuptotheengine).B737FuselageThe737-300fuselageisdividedintofoursections:section41,section43,section46andsection48.B737FuselageSection41containstheradarantennabehindafiber-glasshoneycombfairing,hingedatthetop.Aftofthepressurebulkhead,abovethefloor,aretheflightcompartmentandforwardairstairanditsdoor,andtheelectronicequipmentbay.Thissectionhastwoloweraccessdoors.Section43containsthepassengercabinandtheforwardcargocompartment.fairing[?fe?r??]整流罩，整流片，減阻裝置，集市上賣的禮物B737FuselageSection46containsthecenterandaftportionofthepassengercabin,twooverwingescapehatchesandaftentryandservicedoors.Thespacebelowthefloorincludesthewingcentersection(fueltank),air-conditioningbays,wheelwell,hydraulicbayandaftcargocompartment.Thissectionterminatesattheaftpressurebulkhead.Section48containstheauxiliarypowerunit(APU)andhorizontalstabilizertruss.Accesstothissectionisthroughadoorontheleftside,aftofwitchistheAPUaccessdoorandAPUexhaust.勤務口空調艙輪艙壓力隔板輔助動力裝置DimensionsandZonesPART02DimensionsandZonesTheairplanehaseightmajorzonestohelpyoufindandidentifytheairplanecomponentsandparts.ThemajorzonesaredividedintosubzonesandthesubzoneintozonesDimensionsandZones機身縱向站位（inch）BSTA00機身站位線：BSTA(BodyStationline)Thebodystationline(STA)isahorizontaldimension.Itstartsatstationlinezero.Youmeasurethebodystationlinefromaverticalreferenceplanethatisforwardoftheairplane.DimensionsandZones機身橫向站位機身縱剖線：BBL(BodyButtockLine)Thebodybuttockline(BL)isalateraldimension.Youmeasurethebuttocklinetotheleftorrightoftheairplanecenterline.BBL0LRDimensionsandZones機身垂直站位機身水線：BWL(BodyWaterLine)Thewaterline(WL)isaheightline.Youmeasurethewaterlinefromahorizontalreferenceplaneblowtheairplane.BWL0BWL0向前DimensionsandZonesMAJORZONEDESCRIPTION100LowerHalfofFuselage200UpperHalfofFuselage300EmpennageandBodySection48400PowerPlantsandNacelleStruts500LeftWing600RightWing700LandingGearandLandingGearDoors800DoorsTypicalDamagesPART03TypicalDamagesscratchcrackdentnickdistortiondebondingComparisonofAircraftModelsPART04ComparisonofAircraftModelsThe737-300isthesamebasicdesignasthe737-200,withabodystretchof104inches,awingtipextensionof14inches,ahorizontaltailextensionof36inches,alargerdorsalfinandstrengthenedstabilizer.The737-400,relativetothe737-300,hasbodystretchof120inches,twoadditionaloverwingexit,tailskid,andstrengthenedlandinggear.The737-500usesthe737-300basicstructurewitha94inchesshorterbodyandarevisedforwardandaftfairing(wingtobody).AircraftNavigationPART05AircraftNavigationThenavigationsystemscomputeanddisplaytheairplane’spositionandmovementovertheearth’ssurface.Theysensefromtheenvironment,receivefromgroundstationand/oracquirefromothersystemsthedatausedtoprovidethesedisplays.Thenavigationsystemsprovideoneormoreofthefollowingfunctions:acquireandtransmitnavigationdata;receiveandprocessnavigationdata