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1、Aincreasetheloadfactor.4,飛行原理Howcanthestabilityoftheatmospherebedetermined?AAmbienttemperaturelapserate.BAtmosphericpressureatvariouslevels.CSurfacetemperature/dewpointspread正確答案:Apreventsairflowingdirectlyfromthehighpressureareatolowpressureareawhenairmovesinaleveldirection.AFrictionforce.BInertial
2、centrifugalforce.CCoriolisdeflectingforce.正確答案:COnepurposeofhigh-liftdevicesistoBdelaystall.Cincreaseairspeed正確答案:BTheprimarypurposeofhigh-liftdevicesistoincreasetheAL/Dmax.BLiftatlowspeedsCDragandreduceairspeed.正確答案:BAirflowseparationoverthewingcanbedelayedbyusingvortexgeneratorsAdirectinghighpress
3、ureairoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.Aincreasetheloadfactor.Bdirectingasuctionoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.Cmakingthewingsurfaceroughand/ordirectinghighpressureairoverthetopofthewingorflapthroughslots.正確答案:CDescribedynamiclong
4、itudinalstabilityAMotionaboutthelongitudinal.BMotionaboutthelateralaxis.CMotionabouttheverticalaxis.正確答案:BIdentifythetypestabilityiftheaircraftattituderemainsinnewpositionafterthecontrolshavebeenneutralized.ANegativelongitudinalstaticstabilityBNeutrallongitudinaldynamicstabilityCNeutrallongitudinals
5、taticstability正確答案:CIdentifythetypestabilityiftheaircraftattitudetendstomovefartherfromitsoriginalpositionafterthecontrolshavebeenneutralized.ANegativestaticstabilityBPositivestaticstabilityCANegativestaticstabilityBPositivestaticstabilityCNegativedynamicstability正確答案:AIdentifythetypestabilityifthea
6、ircraftattitudetendstoreturntoitsoriginalafterthecontrolshavebeenneutralized.APositivedynamicstability.BPositivestaticstability.CNeutraldynamicstability.正確答案:B正確答案:B正確答案:B正確答案:BAincreasetheloadfactor.Whatisacharacteristicoflongitudinalinstability?APitchoscillationsbecomingprogressivelygreater.BBanko
7、scillationsbecomingprogressivelygreater.CAircraftconstantlytriestopitchdown.正確答案:AIftheairplaneattituderemainsinanewpositionaftertheelevatorcontrolispressedforwardandreleased,theairplanedisplaysAneutrallongitudinalstaticstability.Bpositivelongitudinalstaticstability.Cneutrallongitudinaldynamicstabil
8、ity.正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whichistrueregardingtheforcesactingonanaircraftinasteady-statedescent?AThesumofallupwardforcesislessthanthesumofalldownwardforces.BThesumofallrearwardforcesisgreaterthanthesumofallforces.CThesumofallforwardforcesisequaltothesumofallrearwardforces.正確
9、答案:CWhatperformanceischaracteristicofflightatmaximumL/Dinapropeller-drivenairplane?AMaximumrangeanddistanceglide.BBestangleofclimbCMaximumendurance.正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.WhatistheeffectontotaldragofanaircraftiftheairspeeddecreasesinlevelflightbelowthatspeedformaximumL/D?ADra
10、gincreasesbecauseofincreasedinduceddrag.BDragincreasesbecauseofincreasedparasitedrag.CDragdecreasesbecauseoflowerinduceddrag.正確答案:AWhatistherelationshipbetweeninducedandparasitedragwhenthegrossweightisincreased?AparasitedragincreasesmorethaninduceddragBinduceddragincreasesmorethanparasitedragCbothpa
11、rasiteandinduceddragareequallyincreased正確答案:B正確答案:B正確答案:B正確答案:BAincreasetheloadfactor.Whattrueairspeedandangleofattackshouldbeusedtogeneratethesameamountofliftasaltitudeisincreased?AThesametrueairspeedandangleofattackBAhighertrueairspeedforanygivenangleofattackCAlowertrueairspeedandhigherangleofatta
12、ck正確答案:BWhatwillbetheratiobetweenairspeedandliftiftheangleofattackandotherfactorsremainconstantandairspeedisdoubled?LiftwillbeAThesame.BTwotimesgreaterCFourtimesgreater.正確答案:C正確答案:C正確答案:C正確答案:C正確答案:B正確答案:B正確答案:B正確答案:BAincreasetheloadfactor.Whyisitnecessarytoincreasebackelevatorpressuretomaintainalti
13、tudeduringaturn?TocompensatefortheAlossoftheverticalcomponentofliftBlossofthehorizontalcomponentofliftandtheincreaseincentrifugalforceCrudderdeflectionandslightoppositeaileronthroughouttheturn正確答案:AAtwhichspeedwillincreasingthepitchattitudecauseanairplanetoclimb?ALowspeedBHighspeed.CAnyspeed.Aincrea
14、setheloadfactor.Ifnocorrectiveactionistakenbythepilotasangleofbankisincreased,howistheverticalcomponentofliftandsinkrateaffected?ALiftincreasesandthesinkrateincreasesBLiftdecreasesandthesinkratedecreasesCLiftdecreasesandthesinkrateincreases.正確答案:CIfsevereturbulenceisencountered,whichprocedureisrecom
15、mended?Maintainaconstantaltitude.Maintainaconstantattitude.Maintainconstantairspeedandaltitude.正確答案:B【解析】遇到劇烈顛簸,如雷暴中如試圖保持某一高度幾乎是不可能的,而且這樣做會(huì)增加機(jī)體的壓力。這時(shí)應(yīng)允許飛機(jī)隨氣流升降并保持飛機(jī)的姿態(tài),這樣機(jī)體承受的壓力將是最小的。Howcananairplaneproducethesameliftingroundeffectaswhenoutofgroundeffect?AThesameangleofattack.BAlowerangleofattack.CA
16、higherangleofattack.正確答案:B(23)Whatisapurposeofflightspoilers?AIncreasethecamberofthewing.BReduceliftwithoutincreasingairspeed.CDirectairflowoverthetopofthewingathighanglesofattack.正確答案:BForwhichpurposemayflightspoilersbeused?AReducethewingsliftuponlandingBIncreasetherateofdescentwithoutincreasingaer
17、odynamicdrag.CAidinlongitudinalbalancewhenrollinganairplaneintoaturn.正確答案:AWhichisapurposeofgroundspoilersAReducethewingsliftuponlandingBAidinrollinganairplaneintoturn.CIncreasetherateofdescentwithoutgainingairspeed.正確答案:AWhatisthepurposeofacontroltab?AMovetheflightcontrolsintheeventofmanualreversio
18、n.BReducecontrolforcesbydeflectingintheproperdirectiontomoveaprimaryflightcontrol.CPreventacontrolsurfacefrommovingtoafull-deflectionpositionduetoaerodynamicforces.正確答案:AWhichisapurposeofwing-mountedvortexgenerators?AReducethedragcausedbysupersonicflowoverportionsofthewingBIncreasetheonsetofdragdive
19、rgenceandaidinaileroneffectivenessathighspeedCBreaktheairflowoverthewingsothestallwillprogressfromtherootouttothetipofthewing正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whatisthepurposeofaservotab?AMovetheflightcontrolsintheeventofmanualreversion.BReducecontrolforcesbydeflectingintheproperdirecti
20、ontomoveaprimaryflightcontrol.CPreventacontrolsurfacefrommovingtoafull-deflectionpositionduetoaerodynamicforces.正確答案:BWhatisthepurposeofanelevatortrimtab?AProvidehorizontalbalanceasairspeedisincreasedtoallowhands-offflight.BAdjustthespeedtailloadfordifferentairspeedsinflightallowingneutralcontrolfor
21、cesCModifythedownwardtailloadforvariousairspeedsinflighteliminatingflight-controlpressures.Aincreasetheloadfactor.surfacesurfacesurfacesurface正確答案:CWhichdirectionfromtheprimarycontroldoesaservotabmove?ASamedirection.BOppositedirectionCRemainsfixedforallpositions.正確答案:BWhichdirectionfromtheprimarycon
22、troldoesananti-servotabmove?ASamedirection.BOppositedirection.CRemainsfixedforallpositions.正確答案:正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whichdirectionfromtheprimarycontrolsurfacedoesanelevatoradjustabletrimtabmovewhenthecontrolsurfaceismoved?ASamedirection.BOppositedirectionCRemainsfixedforal
23、lpositions.正確答案:CWhatisthereasonforvariationsingeometricpitchalongapropellerorrotorblade?AItpermitsarelativelyconstantangleofattackalongitslengthwhenincruisingflight.BItpreventstheportionofthebladenearthehuborrootfromstallingduringcruisingflight.CItpermitsarelativelyconstantangleofincidencealongitsl
24、engthwhenincruisingflight正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whichflightconditionsofalargejetairplanecreatethemostsevereflighthazardbygeneratingwingtipvorticesofthegreateststrength?AHeavy,slow,gearandflapsup.BHeavy,slow,gearandflapsdown.CHeavy,fast,gearandflapsdown.正確答案:AWingtipvorticescr
25、eatedbylargeaircrafttendtoASinkbelowtheaircraftgeneratingtheturbulence.BRisefromthesurfacetotrafficpatternaltitude.CAccumulateandremainforaperiodoftimeatthepointwherethetakeoffrollbegan.正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whichstatementistrueconcerningthewaketurbulenceproducedbyalargetran
26、sportaircraft?AVorticescanbeavoidedbyflying300feetbelowandbehindtheflightpathofthegeneratingaircraft.BThevortexcharacteristicsofanygivenaircraftmaybealteredbyextendingtheflapsorchangingthespeed.CWaketurbulencebehindapropeller-drivenaircraftisnegligiblebecausejetenginethrustisanecessaryfactorinthefor
27、mationofvortices.正確答案:BIfyoutakeoffbehindaheavyjetthathasjustlanded,youshouldplantoliftoffApriortothepointwherethejettoucheddown.Bbeyondthepointwherethejettoucheddown.Catthepointwherethejettoucheddownandontheupwindedgeoftherunway.正確答案:B正確答案:B正確答案:B正確答案:BCUsinghighpowersettingsCUsinghighpowersettings
28、Aincreasetheloadfactor.(38)Howdoesthewaketurbulencevortexcirculatearoundeachwingtip?AInward,upward,andaroundthewingtip.BCounterclockwisewhenviewedfrombehindtheaircraft.COutward,upward,andaroundthewingtip正確答案:CHazardousvortexturbulencethatmightbeencounteredbehindlargeaircraftiscreatedonlywhenthatairc
29、raftisADevelopingliftBOperatingathighairspeeds正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.ItistheresponsibilityofthepilotandcrewtoreportanearmidaircollisionasaresultofproximityofatleastA500feetorlesstoanotheraircraft.B50feetorlesstoanotheraircraft.C1,000feetorlesstoanotheraircraft.丿正確答案:AToallowp
30、ilotsofin-traillighteraircraftmakeflightpathadjustmentstoavoidwaketurbulence,pilotsofheavyandlargejetaircraftshouldflyAbelowtheestablishedglidepathandslightlytoeithersideoftheon-coursecenterline.Babovetheestablishedglidepathandslightlydownwindoftheon-coursecenterline.Contheestablishedglidepathandont
31、heapproachcoursecenterlineorrunwaycenterlineextended.正確答案:C正確答案:C正確答案:C正確答案:C正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Howcanthepilotincreasetherateofturnanddecreasetheradiusatthesametime?ASteepenthebankandincreaseairspeed.BSteepenthebankanddecreaseairspeed.CShallowthebankandincreaseairspeed.正確
32、答案:B43)Howcanturbulentaircauseanincreaseinstallingspeedofanairfoil?AAnabruptchangeinrelativewind.BAdecreaseinangleofattack.CSuddendecreaseinloadfactor.Aincreasetheloadfactor.Whatistherelationshipoftherateofturnwiththeradiusofturnwithaconstantangleofbankbutincreasingairspeed?ARatewilldecreaseandradiu
33、swillincrease.BRatewilldecreaseandradiuswilldecrease.CRateandradiuswillincrease.正確答案:AWhichconditionwouldINITIALLYcausetheindicatedairspeedandpitchtoincreaseandsinkratetodecrease?ASuddenincreaseinaheadwindcomponent.BSuddendecreaseinaheadwindcomponent.CTailwindwhichsuddenlyincreaseinvelocity.正確答案:AWh
34、ichofthefollowingisnotthewayofincreasingMCRITinjettransportdesigns?AGivethewingalowercamber.AGivethewingalowercamber.Aincreasetheloadfactor.BIncreasewingsweepCAddslats.正確答案:CWithinwhatMachrangedoestransonicflightregimesusuallyoccur?A0.50to0.75MachB0.75to1.20MachC1.20to2.50Mach正確答案:BAtwhatMachrangedo
35、esthesubsonicflightrangenormallyoccur?ABelow.75Mach.BFrom.75to1.20Mach.CFrom1.20to2.50Mach.正確答案:A正確答案:A正確答案:A正確答案:A正確答案:A正確答案:A正確答案:A正確答案:AAincreasetheloadfactor.Whatisthefreestreammachnumberwhichproducefirstoflocalsonicflow?AsupersonicMachnumberBtransonicMachnumberCcriticalMachnumber正確答案:CWhatisthe
36、highestspeedpossiblewithoutsupersonicflowoverthewing?AcriticalMachnumberBinitialbuffetspeedCtransonicindexAincreasetheloadfactor.Whichmaximumrangefactordecreaseasweightdecrease?AAirspeed.BAngleofattackCAltitude.正確答案:AWhichmaximumrangefactorincreasesasweightdecreases?AAngleofattackBAltitude.CAirspeed
37、.正確答案:BWhatshouldapilotdotomaintainbestrangeairplaneperformancewhenaheadwindisencountered?AIncreasespeed.BMaintainspeed.CDecreasespeed.正確答案:AWhatshouldapilotdotomaintainbestrangeairplaneperformancewhenatailwindisencountered?AIncreasespeed.BMaintainspeed.CDecreasespeed.正確答案:CWhichprocedureproducesthe
38、minimumfuelconsumptionforagivenlegofthecruiseflight?AIncreasealtitudeforaheadwind,decreasealtitudeforatailwind.BIncreasespeedforatailwind.CIncreasespeedforaheadwind.正確答案:C正確答案:C正確答案:C正確答案:CAincreasetheloadfactor.Atwhatspeed,withreferencetoL/DMAX,doesmaximumrangeforajetairplaneoccur?AAspeedlessthanth
39、atforL/DMAXBAspeedequaltothatforL/DMAXCAspeedgreaterthanthatforL/DMAX正確答案:CMaximumrangeperformanceofaturbojetaircraftisobtainedbywhichprocedureasaircraftweightreduces?AAIncreasingspeedoraltitude.BBIncreasingaltitudeordecreasingspeed.CCIncreasingspeedordecreasingaltitude.正確答案:B正確答案:B正確答案:B正確答案:BAincr
40、easetheloadfactor.Underwhatconditionshouldstallsneverbepracticedinatwin-engineairplane?AwithoneengineinoperativeBwithfullflapsandgearextendedCwithclimbpoweron正確答案:AV2orinitialclimbspeedmustnotbeAMorethanthetakeoffsafetyspeedBLessthan1.2VS1CMorethan1.1MAC正確答案:BV2orrotationspeedmustnotbeALessthanV1BMo
41、rethanVMCAAincreasetheloadfactor.CLessthanVMCG+20kts正確答案:AAtwhatspeedwilldynamichydroplaningbeginiftirehaspressure70?A75knotsB85knotsC80knots正確答案:AAslargejettransportaircraftclimbsaboveFL340asfuelburnsoff,theIASturbulencepenetrationspeedwillAIncrease.BDecrease.CRemainthesame.正確答案:B正確答案:BAincreasethe
42、loadfactor.InrelationtotakeoffperformanceV1isthespeedbywhichAadecisionhasbeenmadeBretardationactionistakenCamarginof10%existsoverVMCG正確答案:AWhensettingthealtimeter,pilotshoulddisregardAcorrectionsforstaticpressuresystems.Beffectsofnonstandardatmospherictemperaturesandpressures.Ccorrectionsforinstrume
43、nterror.正確答案:B(65)Inenrouteflight,thealtimetersettingisAQNE正確答案:B正確答案:BAincreasetheloadfactor.BQNHCQFE正確答案:AWhateffect,ifany,doesaltitudehaveonVMCforanairplanewithunsuperchargedengines?DecreaseswithaltitudeNoneIncreaseswithaltitude正確答案:AIftheambienttemperatureiscolderthanstandardatFL310,whatistherel
44、ationshipbetweentruealtitudeandpressurealtitude?ATheyareboththesame31,000feet.BTruealtitudeislowerthan31,000feet.CPressurealtitudeislowerthantruealtitude.正確答案:B正確答案:BAincreasetheloadfactor.Whataffectsindicatedstallspeed?AWeight,loadfactor,andpower.BLoadfactor,angleofattack,andpower.CAngleofattack,we
45、ight,andairspeed.正確答案:AWhatismovementofthecenterpressurewhenthewingtipsofasweptwingairplaneareshock-stalledfirst?AinwardandaftBinwardandforwardCoutwardandforward正確答案:BWhatisonedisadvantageofasweptwingdesign?Aincreasetheloadfactor.AThewingrootstallspriortothewingtipsection.BThewingtipsectionstallspri
46、ortothewingroot.CSeverepitchdownmomentwhenthecenterofpressureshiftsforward.正確答案:BWhatistheconditionknownaswhengustscauseasweptwing-typeairplanetorollinonedirectionwhileyawingintheother?APorpoise.BWingover.CDutchroll正確答案:CWhatistheprincipaladvantageofasweepbackdesignwingoverastraightwingdesign?AThecr
47、iticalMachnumberwillincreasesignificantly.BSweepbackwillincreasechangesinthemagnitudeofforcecoefficientsduetocompressibility.CSweepbackwillacceleratetheonsetofcompressibilityeffect.正確答案:AWhichofthefollowingareconsideredprimaryflightcontrols?ATabs.BFlaps.COutboardailerons.正確答案:CWhichofthefollowingisc
48、onsideredaprimaryflightcontrol?ASlatsBElevatorCDorsalfin正確答案:BWhichofthefollowingisconsideredanauxiliaryflightcontrol?AUpperrudder.BLeading-edgeflaps.CRuddervator.正確答案:BWhenareoutboardaileronsnormallyused?ALow-speedflightonly.BHigh-speedflightonly.CLow-speedandhigh-speedflight正確答案:正確答案:A正確答案:正確答案:AA
49、increasetheloadfactor.Whenareinboardaileronsnormallyused?ALow-speedflightonly.BHigh-speedflightonly.CLow-speedandhigh-speedflight.正確答案:CBychangingtheangleofattackofawing,thepilotcancontroltheairplanesAlift,grossweight,anddrag.Blift,airspeed,anddrag.Cliftandairspeed,butnotdrag.正確答案:B80)Whydosomeairpl
50、anesequippedwithinboard/outboardaileronsusetheoutboardsforslowflightonly?Aincreasetheloadfactor.AIncreasedsurfaceareaprovidesgreatercontrollabilitywithflapextension.BAerodynamicloadsontheoutboardaileronstendtotwistthewingtipsathighspeeds.CLockingouttheoutboardaileronsinhigh-speedflightprovidesvariab
51、leflightcontrolfeel.正確答案:BWhatistheprimaryfunctionoftheleadingedgeflapsinlandingconfigurationduringtheflarebeforetouchdown?ApreventflowseparationBdecreaserateofsink.Cincreaseprofiledrag.正確答案:AWhichisapurposeofleading-edgeslatsonhigh-performancewings?ADirectairfromthelowpressureareaundertheleadingedg
52、ealongthetopofthewing.BImproveaileroncontrolduringlowanglesofattack.CIncreaseliftatrelativeslowspeeds.正確答案:CWhateffectdoestheleadingedgeslotinthewinghaveonperformance?ADecreasesprofiledrag.BChangesthestallingangleofattacktoahigherangle.CDeceleratestheuppersurfaceboundarylayerair.正確答案:BWhatdoestheblu
53、eradiallineontheairspeedindicatorofalight,twin-engineairplanerepresent?正確答案:正確答案:A正確答案:正確答案:A正確答案:正確答案:BAMaximumsingle-enginerateofclimbBMaximumsingle-engineangleofclimbCMinimumcontrollableairspeedforsingle-engineoperation.正確答案:ADuringanenroutedescentinafixed-thrustandfixed-pitchattitudeconfiguratio
54、n,boththeramairinputanddrainholeofthepitotsystembecomecompletelyblockedbyice.Whatairspeedindicationcanbeexpected?AIncreaseinindicatedairspeed.BDecreaseinindicatedairspeed.CIndicatedairspeedremainsatthevaluepriortoicingWhatcanapilotexpectifthepitotsystemramairinputanddrainholeareblockedbyice?ATheairs
55、peedindicatormayactasanaltimeter.BTheairspeedindicatorwillshowadecreasewithanincreaseinaltitudeCNoairspeedindicatorchangewilloccurduringclimbsordescents正確答案:AIfboththeramairinputanddrainholeofthepitotsystemareblockedbyice,whatairspeedindicationcanbeexpected?ANovariationofindicatedairspeedinlevelflig
56、htiflargepowerchangesaremadeBDecreaseofindicatedairspeedduringaclimbCConstantindicatedairspeedduringadescent正確答案:正確答案:BHowwilltheairspeedindicatorreactiftheramairinputtothepitotheadisblockedbyice,butthedrainholeandstaticportarenot?AIndicationwilldroptozero.BIndicationwillrisetothetopofthescale.CIndi
57、cationwillremainconstantbutwillincreaseinaclimb.正確答案:A(89)Whichisapurposeoftheleading-edgeflaps?AIncreasethecamberofthewing.BReduceliftwithoutincreasingairspeed.CDirectairflowoverthetopofthewingathighanglesofattack.正確答案:ATheKruegerflapextendsfromtheleadingedgeofthewing,increasingitsAangleofattackBca
58、mberCenergy正確答案:BTheuseofahigherflapsettingfortakeoffwillALengthenboththetakeoffrunandthesecondandthirdtakeoffclimbsegments.BShortenthetakeoffrunandthesecondbutlengthenthethirdtakeoffclimbsegment.CShortenthetakeoffrunbutlengthenthesecondandthirdtakeoffclimbsegments.正確答案:CAACompensateforlossofvertica
59、lcomponentofliftBIncreasethehorizontalcomponentofliftequaltotheverticalcomponentCCompensateforincreaseindrag正確答案:AToavoidthewingtipvorticesofadepartingjetairplaneduringtakeoff,thepilotshouldALiftoffatapointwellpastthejetairplanesflightpath.BClimbaboveandstayupwindofthejetairplanesflightpath.CRemainb
60、elowtheflightpathofthejetairplane.正確答案:BWhateffectwouldalightcrosswindhaveonthewingtipvorticesgeneratedbyalargeairplanethathasjusttakenoff?正確答案:正確答案:C正確答案:正確答案:C正確答案:正確答案:AATheupwindvortexwilltendtoremainontherunwaylongerthanthedownwindvortex.BAcrosswindwillrapidlydissipatethestrengthofbothvortices.
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