ATPL网上题库4飞行原理.doc

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1、4，飞行原理(1)Howcanthestabilityoftheatmospherebedetermined?·A．Ambienttemperaturelapserate.·B．Atmosphericpressureatvariouslevels.·C．Surfacetemperature/dewpointspread.正确答案：A(2)____preventsairflowingdirectlyfromthehighpressureareatolowpressureareawhenairmovesinaleveldirection.·A．Fri

2、ctionforce.·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．Dragandreduceairspe

3、ed.正确答案：B(5)Airflowseparationoverthewingcanbedelayedbyusingvortexgenerators·A．directinghighpressureairoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·B．directingasuctionoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·C．makingthewingsurf

4、aceroughand/ordirectinghighpressureairoverthetopofthewingorflapthroughslots.正确答案：C(6)Describedynamiclongitudinalstability.·A．Motionaboutthelongitudinal.·B．Motionaboutthelateralaxis.·C．Motionabouttheverticalaxis.正确答案：B(7)Identifythetypestabilityiftheaircraftattituderemainsinne

5、wpositionafterthecontrolshavebeenneutralized.·A．Negativelongitudinalstaticstability·B．Neutrallongitudinaldynamicstability·C．Neutrallongitudinalstaticstability正确答案：C(8)Identifythetypestabilityiftheaircraftattitudetendstomovefartherfromitsoriginalpositionafterthecontrolshavebee

6、nneutralized.·A．Negativestaticstability·B．Positivestaticstability·C．Negativedynamicstability正确答案：A(9)Identifythetypestabilityiftheaircraftattitudetendstoreturntoitsoriginalafterthecontrolshavebeenneutralized.·A．Positivedynamicstability.·B．Positivestaticstability.·C．Neutraldyn

7、amicstability.正确答案：B(10)Whatisacharacteristicoflongitudinalinstability?·A．Pitchoscillationsbecomingprogressivelygreater.·B．Bankoscillationsbecomingprogressivelygreater.·C．Aircraftconstantlytriestopitchdown.正确答案：A(11)Iftheairplaneattituderemainsinanewpositionaftertheelevatorco

8、ntrolispressedforwardandreleased,theairplanedisplays·A．neutrallongit