ATPL網(wǎng)上題庫4飛行原理

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.