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ID:39120940
大小:2.12 MB
页数:75页
时间:2019-06-25
《飞艇的气动模型与线性运动特性分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、以上分析表明,不同气动力模型对飞艇动态特性影响不一样,飞艇气动力的研究是建立飞艇动力学模型的重要环节,也是研究飞艇动态特性的基础,飞艇气动力模型的研究具有重要意义。关键词:动力学方程;非定常气动力;线性化;模态分析;动态特性ⅡAbstractTllispapermailllyin仃‘)ducestllee)【istingaerodyn砌cparametermodelsofRus.sia,meUIlitedStates,aIldCaIlada,inaddidontoconsid嘶ngtllee舵ctofgrav咄buoyancy,thlllsttoth
2、eairship.Theinfluenceofdiff打entaerodynamiccomponentsonthedynaIIliccharac蜘sticsareemphaticaUyaIlalyzed.TheworkmajIllyincludestllefoUowingaspects:Dyn删csmodelisestablished.Basedonmespacecoordinatesystem,thel【ine.m撕csequationsaJlddynaIIlicsequationsarededuced.111e铲aVi吼buoyancyaIldm
3、mstsu骶redbytheairs螂arealsoanalyzeda11dmodeledinⅡ1isp印er.Aerodyn砌cestimationmemodsadoptedbymeRussia,theUIlitedStatesandmeCanadascholarsareinVestigatedarldcompared.TheairsllipofA一01ismeresearchobject.0nmebasisofmeRussia’sairsllipdyn枷cs,Viscousandnon-viscousaerody.nan血cpartsconsti
4、mtetlleaemdynan血cofairsllips.Non-ViscousaerodynaIllicpartisgiVenbyLanlb’sresearchresults,aIldt11eviscousaerodynaIIlicpancaJlbeobtainedbytlledetailede)【p甜mentdata.Particulally’tllenon-viscousandmeviscouspartscalloVedap.1(irilinⅡlinkmatMunkmomentandsomenon—viscousaerodyn删cf6rcesa
5、cllieVedbyLanlb’smemodshouldbeeliminated.Thecoordinatesystemdefinitionme山odofRussiaisdif!f.erentwithmeUmtedStates,wllileitisthesan舱withmeCaIla.da’s.IIlordertofacilitatecompaIison,t11eaerodynan=licresultsofRussia’scoordinatesaretransfomedtocoordinatesystemdefinedbVmeUnitedStates
6、,auldthenmeAmer-icanaerodynaIIlicresultscanbeobtained,inwllichtlleMurlkmomentiseliminated,butdampingtemsrelatedtotlleangularVeloci哆arenotbetakenintoaccountinⅡle加nericaIlaerodynaInjcparaInetermodel.7111eCanadascholarsⅥ1wenhconsideredallofmeaerodynaIIlics.HoweVer'hedidIl’tremovet
7、IleMunkmoment.Theinfluenceofdi瓶rentaerodynamiccomponentsonairshipdynamiccharac-teristicsarediscussed.Theapproximate1inearmodelsofⅡlreedia宅rentsystemsarederivedfI.omtllenonlineardyn锄icmodelundernlesmaUperturbationassumption.Themodeanalysismemodisproposed,andmemodonmodesoftheairs
8、mparein-Vestigated.RelativetotlleRussiaaerodyn枷cmodel,
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