ATPL网上题库4飞行原理.docx
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ATPL网上题库4飞行原理.docx
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ATPL网上题库4飞行原理
4,飞行原理
(1)Howcanthestabilityoftheatmospherebedetermined?
∙A.Ambienttemperaturelapserate.
∙B.Atmosphericpressureatvariouslevels.
∙C.Surfacetemperature/dewpointspread.
正确答案:
A
(2)____preventsairflowingdirectlyfromthehighpressureareatolowpressureareawhenairmovesinaleveldirection.
∙A.Frictionforce.
∙B.Inertialcentrifugalforce.
∙C.Coriolisdeflectingforce.
正确答案:
C
(3)Onepurposeofhigh-liftdevicesisto
∙A.increasetheloadfactor.
∙B.delaystall.
∙C.increaseairspeed.
正确答案:
B
(4)Theprimarypurposeofhigh-liftdevicesistoincreasethe
∙A.L/Dmax.
∙B.Liftatlowspeeds.
∙C.Dragandreduceairspeed.
正确答案:
B
(5)Airflowseparationoverthewingcanbedelayedbyusingvortexgenerators
∙A.directinghighpressureairoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.
∙B.directingasuctionoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.
∙C.makingthewingsurfaceroughand/ordirectinghighpressureairoverthetopofthewingorflapthroughslots.
正确答案:
C
(6)Describedynamiclongitudinalstability.
∙A.Motionaboutthelongitudinal.
∙B.Motionaboutthelateralaxis.
∙C.Motionabouttheverticalaxis.
正确答案:
B
(7)Identifythetypestabilityiftheaircraftattituderemainsinnewpositionafterthecontrolshavebeenneutralized.
∙A.Negativelongitudinalstaticstability
∙B.Neutrallongitudinaldynamicstability
∙C.Neutrallongitudinalstaticstability
正确答案:
C
(8)Identifythetypestabilityiftheaircraftattitudetendstomovefartherfromitsoriginalpositionafterthecontrolshavebeenneutralized.
∙A.Negativestaticstability
∙B.Positivestaticstability
∙C.Negativedynamicstability
正确答案:
A
(9)Identifythetypestabilityiftheaircraftattitudetendstoreturntoitsoriginalafterthecontrolshavebeenneutralized.
∙A.Positivedynamicstability.
∙B.Positivestaticstability.
∙C.Neutraldynamicstability.
正确答案:
B
(10)Whatisacharacteristicoflongitudinalinstability?
∙A.Pitchoscillationsbecomingprogressivelygreater.
∙B.Bankoscillationsbecomingprogressivelygreater.
∙C.Aircraftconstantlytriestopitchdown.
正确答案:
A
(11)Iftheairplaneattituderemainsinanewpositionaftertheelevatorcontrolispressedforwardandreleased,theairplanedisplays
∙A.neutrallongitudinalstaticstability.
∙B.positivelongitudinalstaticstability.
∙C.neutrallongitudinaldynamicstability.
正确答案:
A
(12)Whichistrueregardingtheforcesactingonanaircraftinasteady-statedescent?
∙A.Thesumofallupwardforcesislessthanthesumofalldownwardforces.
∙B.Thesumofallrearwardforcesisgreaterthanthesumofallforces.
∙C.Thesumofallforwardforcesisequaltothesumofallrearwardforces.
正确答案:
C
(13)WhatperformanceischaracteristicofflightatmaximumL/Dinapropeller-drivenairplane?
∙A.Maximumrangeanddistanceglide.
∙B.Bestangleofclimb.
∙C.Maximumendurance.
正确答案:
A
(14)WhatistheeffectontotaldragofanaircraftiftheairspeeddecreasesinlevelflightbelowthatspeedformaximumL/D?
∙A.Dragincreasesbecauseofincreasedinduceddrag.
∙B.Dragincreasesbecauseofincreasedparasitedrag.
∙C.Dragdecreasesbecauseoflowerinduceddrag.
正确答案:
A
(15)Whatistherelationshipbetweeninducedandparasitedragwhenthegrossweightisincreased?
∙A.parasitedragincreasesmorethaninduceddrag
∙B.induceddragincreasesmorethanparasitedrag
∙C.bothparasiteandinduceddragareequallyincreased
正确答案:
B
(16)Whattrueairspeedandangleofattackshouldbeusedtogeneratethesameamountofliftasaltitudeisincreased?
∙A.Thesametrueairspeedandangleofattack
∙B.Ahighertrueairspeedforanygivenangleofattack
∙C.Alowertrueairspeedandhigherangleofattack
正确答案:
B
(17)Whatwillbetheratiobetweenairspeedandliftiftheangleofattackandotherfactorsremainconstantandairspeedisdoubled?
Liftwillbe
∙A.Thesame.
∙B.Twotimesgreater.
∙C.Fourtimesgreater.
正确答案:
C
(18)Whyisitnecessarytoincreasebackelevatorpressuretomaintainaltitudeduringaturn?
Tocompensateforthe
∙A.lossoftheverticalcomponentoflift
∙B.lossofthehorizontalcomponentofliftandtheincreaseincentrifugalforce
∙C.rudderdeflectionandslightoppositeaileronthroughouttheturn
正确答案:
A
(19)Atwhichspeedwillincreasingthepitchattitudecauseanairplanetoclimb?
∙A.Lowspeed.
∙B.Highspeed.
∙C.Anyspeed.
正确答案:
B
(20)Ifnocorrectiveactionistakenbythepilotasangleofbankisincreased,howistheverticalcomponentofliftandsinkrateaffected?
∙A.Liftincreasesandthesinkrateincreases.
∙B.Liftdecreasesandthesinkratedecreases.
∙C.Liftdecreasesandthesinkrateincreases.
正确答案:
C
(21)Ifsevereturbulenceisencountered,whichprocedureisrecommended?
∙Maintainaconstantaltitude.
∙Maintainaconstantattitude.
∙Maintainconstantairspeedandaltitude.
正确答案:
B
【解析】遇到剧烈颠簸,如雷暴中如试图保持某一高度几乎是不可能的,而且这样做会增加机体的压力。
这时应允许飞机随气流升降并保持飞机的姿态,这样机体承受的压力将是最小的。
(22)Howcananairplaneproducethesameliftingroundeffectaswhenoutofgroundeffect?
∙A.Thesameangleofattack.
∙B.Alowerangleofattack.
∙C.Ahigherangleofattack.
正确答案:
B
(23)Whatisapurposeofflightspoilers?
∙A.Increasethecamberofthewing.
∙B.Reduceliftwithoutincreasingairspeed.
∙C.Directairflowoverthetopofthewingathighanglesofattack.
正确答案:
B
(24)Forwhichpurposemayflightspoilersbeused?
∙A.Reducethewings'liftuponlanding.
∙B.Increasetherateofdescentwithoutincreasingaerodynamicdrag.
∙C.Aidinlongitudinalbalancewhenrollinganairplaneintoaturn.
正确答案:
A
(25)Whichisapurposeofgroundspoilers
∙A.Reducethewingsliftuponlanding
∙B.Aidinrollinganairplaneintoturn.
∙C.Increasetherateofdescentwithoutgainingairspeed.
正确答案:
A
(26)Whatisthepurposeofacontroltab?
∙A.Movetheflightcontrolsintheeventofmanualreversion.
∙B.Reducecontrolforcesbydeflectingintheproperdirectiontomoveaprimaryflightcontrol.
∙C.Preventacontrolsurfacefrommovingtoafull-deflectionpositionduetoaerodynamicforces.
正确答案:
A
(27)Whichisapurposeofwing-mountedvortexgenerators?
∙A.Reducethedragcausedbysupersonicflowoverportionsofthewing
∙B.Increasetheonsetofdragdivergenceandaidinaileroneffectivenessathighspeed
∙C.Breaktheairflowoverthewingsothestallwillprogressfromtherootouttothetipofthewing
正确答案:
A
(28)Whatisthepurposeofaservotab?
∙A.Movetheflightcontrolsintheeventofmanualreversion.
∙B.Reducecontrolforcesbydeflectingintheproperdirectiontomoveaprimaryflightcontrol.
∙C.Preventacontrolsurfacefrommovingtoafull-deflectionpositionduetoaerodynamicforces.
正确答案:
B
(29)Whatisthepurposeofanelevatortrimtab?
∙A.Providehorizontalbalanceasairspeedisincreasedtoallowhands-offflight.
∙B.Adjustthespeedtailloadfordifferentairspeedsinflightallowingneutralcontrolforces.
∙C.Modifythedownwardtailloadforvariousairspeedsinflighteliminatingflight-controlpressures.
正确答案:
C
(30)Whichdirectionfromtheprimarycontrolsurfacedoesaservotabmove?
∙A.Samedirection.
∙B.Oppositedirection.
∙C.Remainsfixedforallpositions.
正确答案:
B
(31)Whichdirectionfromtheprimarycontrolsurfacedoesananti-servotabmove?
∙A.Samedirection.
∙B.Oppositedirection.
∙C.Remainsfixedforallpositions.
正确答案:
A
(32)Whichdirectionfromtheprimarycontrolsurfacedoesanelevatoradjustabletrimtabmovewhenthecontrolsurfaceismoved?
∙A.Samedirection.
∙B.Oppositedirection.
∙C.Remainsfixedforallpositions.
正确答案:
C
(33)Whatisthereasonforvariationsingeometricpitchalongapropellerorrotorblade?
∙A.Itpermitsarelativelyconstantangleofattackalongitslengthwhenincruisingflight.
∙B.Itpreventstheportionofthebladenearthehuborrootfromstallingduringcruisingflight.
∙C.Itpermitsarelativelyconstantangleofincidencealongitslengthwhenincruisingflight.
正确答案:
A
(34)Whichflightconditionsofalargejetairplanecreatethemostsevereflighthazardbygeneratingwingtipvorticesofthegreateststrength?
∙A.Heavy,slow,gearandflapsup.
∙B.Heavy,slow,gearandflapsdown.
∙C.Heavy,fast,gearandflapsdown.
正确答案:
A
(35)Wingtipvorticescreatedbylargeaircrafttendto
∙A.Sinkbelowtheaircraftgeneratingtheturbulence.
∙B.Risefromthesurfacetotrafficpatternaltitude.
∙C.Accumulateandremainforaperiodoftimeatthepointwherethetakeoffrollbegan.
正确答案:
A
(36)Whichstatementistrueconcerningthewaketurbulenceproducedbyalargetransportaircraft?
∙A.Vorticescanbeavoidedbyflying300feetbelowandbehindtheflightpathofthegeneratingaircraft.
∙B.Thevortexcharacteristicsofanygivenaircraftmaybealteredbyextendingtheflapsorchangingthespeed.
∙C.Waketurbulencebehindapropeller-drivenaircraftisnegligiblebecausejetenginethrustisanecessaryfactorintheformationofvortices.
正确答案:
B
(37)Ifyoutakeoffbehindaheavyjetthathasjustlanded,youshouldplantoliftoff
∙A.priortothepointwherethejettoucheddown.
∙B.beyondthepointwherethejettoucheddown.
∙C.atthepointwherethejettoucheddownandontheupwindedgeoftherunway.
正确答案:
B
(38)Howdoesthewaketurbulencevortexcirculatearoundeachwingtip?
∙A.Inward,upward,andaroundthewingtip.
∙B.Counterclock
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