ATPL网上题库4飞行原理_精品文档.doc
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ATPL网上题库4飞行原理_精品文档.doc
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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.Liftde
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