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ID:32505448
大小:1.09 MB
页数:40页
时间:2019-02-09
《【7A文】航空飞行控制系统英文培训课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、1FLIGHTCONTROLS-1012FLIGHTCONTROLSPrimaryTheory&Design3ConventionalDesignAconventionalairplaneisonewhichhasaseparatemainwingandhorizontaltailandwiththehorizontaltailbehindthemainwing.Anexampleofaconventionalairplaneisshowntotheleft.ThemostcommoncontrolarrangementontheConventio
2、nalAirplaneisAileronsonthemainwingforrollcontrolandahorizontaltailknownastheStabilizerwithmoveableElevatorsforpitchcontrol.ThereisalsoaVerticalFinwithaRudderfordirectionalorYawcontrol.Sometimesthefixedstabilizerandseparatemovableelevatorsarereplacedbyasinglemovinghorizontaltail
3、knownasaStabilator.4FixedSlotsOnmostlightaircraftslotsareformedbetweenthewingandtheflaps.Wewilldiscussflapsbelow.But,firstwemustconsiderhowslotsincreasetheCLmaxofthewing.FLIGHTCONTROLSLeadingEdgeDevices5ThetwophotosbelowshowabottomandtopviewofafixedslotinalightaircraftwingTOPV
4、IEWBOTTOMVIEW6SlatsOnlargetransportaircraft,andsomelightaircraft,theslotclosesduringcruise.Adevicecalledaslatcanbeextendedfortakeoffandlandingtoachievethesameeffectasthefixedslotshownabove.ThephotototherightshowstheslatsonaDC-9Thediagramtotherightshowshowtheslotallowshighspeeda
5、irfromunderthewingtoflowthrough.Theslotisdesignedtoacceleratetheairflowandmergeitwiththeboundarylayeronthetopofthewing.Asaresult,thestallisdelayed.7TYPESOFSLATS8ThediagramtotherightshowshowtheCLvs.AOAgraphchangeswithaleadingedgeslot.Notethattheslot(orslat)hasnoeffectontheliftpr
6、oducedbythewingatsmallanglesofattack.TheprimaryeffectoftheslotistoincreasethestallingangleofattackandtherebytheCLmax.Whenyouflyanaircraftwithslotsyouwillnoticethattheaircraftcanbeflownatamuchgreaterangleofattack,withoutstalling,thanasimilaraircraftwithoutslots.,910FLIGHTCONTROL
7、STypesofControlDevicesTHEELEVATOR11Attherearofthefuselageofmostaircraftonefindsahorizontalstabilizerandanelevator.Thestabilizerisafixedwingsectionwhosejobistoprovidestabilityfortheaircraft,tokeepitflyingstraight.Thehorizontalstabilizerpreventsup-and-down,orpitching,motionofthe
8、aircraftnose.Theelevatoristhesmallmovingsectionatthere
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