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ID:30136345
大小:1.50 MB
页数:90页
时间:2018-12-27
《[交规考试]atpl网上题库4飞行原理》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、4,飞行原理(1)Howcanthestabilityoftheatmospherebedetermined?·A.Ambienttemperaturelapserate.·B.Atmosphericpressureatvariouslevels.·C.Surfacetemperature/dewpointspread.正确答案:A(2)____preventsairflowingdirectlyfromthehighpressureareatolowpressureareawhenairmovesinaleveldirection.·A.Frictionforce.·B.Inertia
2、lcentrifugalforce.·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)Airflowseparationoverthewingca
3、nbedelayedbyusingvortexgenerators·A.directinghighpressureairoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·B.directingasuctionoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·C.makingthewingsurfaceroughand/ordirectinghighpressureairoverthetopofthewingorflap
4、throughslots.正确答案:C(6)Describedynamiclongitudinalstability.·A.Motionaboutthelongitudinal.·B.Motionaboutthelateralaxis.·C.Motionabouttheverticalaxis.正确答案:B(7)Identifythetypestabilityiftheaircraftattituderemainsinnewpositionafterthecontrolshavebeenneutralized.·A.Negativelongitudinalstaticstability·
5、B.Neutrallongitudinaldynamicstability·C.Neutrallongitudinalstaticstability正确答案:C(8)Identifythetypestabilityiftheaircraftattitudetendstomovefartherfromitsoriginalpositionafterthecontrolshavebeenneutralized.·A.Negativestaticstability·B.Positivestaticstability·C.Negativedynamicstability正确答案:A(9)Iden
6、tifythetypestabilityiftheaircraftattitudetendstoreturntoitsoriginalafterthecontrolshavebeenneutralized.·A.Positivedynamicstability.·B.Positivestaticstability.·C.Neutraldynamicstability.正确答案:B(10)Whatisacharacteristicoflongitudinalinstability?·A.Pitchoscillationsbecomingprogressivelygreater.·B.Ban
7、koscillationsbecomingprogressivelygreater.·C.Aircraftconstantlytriestopitchdown.正确答案:A(11)Iftheairplaneattituderemainsinanewpositionaftertheelevatorcontrolispressedforwardandreleased,theairplanedisplays·A.neutrallongit
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