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时间:2019-11-27
《高平尾布局飞机深失速特性及失速改出伞数值计算与分析》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、第1卷第3期2010年8月航窄T程进展ADVANCESlNAER()NAUTICAI.S(’l卜’N【:EANDENGINEERlN【;V01.1Aug.NO.32010文章编号:1674—8190(2010)03—214—06古亚同卞尾布局飞机深失速特性及失速改出伞数值计算与分析饶秋磊,王启(中国航空工业集团公司飞行试验研究院,西安710089)摘要:ARJ21飞机是我国自行研制的具有典型T尾布局特点的先进支线1s机。失速和失速特性试飞是A尉21飞机适航取证试飞最重要的试飞项目之一。高平尾(T尾)布局飞机“r能存在深失速运动模态,给l£机的失速特性试飞带来安伞风险。本文首先分析
2、r高平尾(T尾)布局飞机的宅气动力学特点,剖析r“深失速”现象的产生原因,并在此基础上以ARJ2l飞机为算例。结合具体的风涧实验数据库,应用上裎估算的方法对动导数进行了补充完善,其次建立了适合预测飞机失速和深失速运动方程的卒气动力学模型,并对飞机的运动特性特别是深失速特性进行了仿真计算,计算结果与实际试飞结果取得1r较好的一致性;最后选择深失速状态作为失速改出伞设计的临界状态,建立失速改出伞的数学模型。对失速改出伞改m深失速的动态过程进行了仿真计算,验证了失速改出伞改出深失速的设计参数,为失速改出伞的研制提供了参考依据。关键词:失速/深失速;失速改出伞;T尾(高平尾)色机中图分类
3、号:V211.7文献标识码:AAnalyseandNumericalSimulationaboutDeep-stallCharacterofHighHorizontalTailPlaneandStallRecoveryParachuteRaoQiulei,WangQi(ChinaFlightTestEstablishment。AviationIndustyCorporationofChina。Xi’an710089,China)Abstract:ARJ21isthefirstChineseself-developedadvancedregionalcivilaircraftwit
4、hatypicalTtaildesign.ThestallandstatlcharaeteristiesflighttestswillbethemostimportantitemsamongtheARJ21airworthinesscertificationsubjects.AdeepstallmotionmodemayexistduetOtheTtailconfigurationandthismayintroducehighriskfortheflighttest.Inthispaper,theaerodynamiccharacteristicsandthemotionmech
5、anismofdeepstallareanalyzed.Basedontheanalysis。theARJ2laircraftisappliedasacalculatingexample,andthewindtunneltestdatabasetheoscillatingaerodynamicsderivativesbeenestimatedbyanengineeringmethodarecomplemented.Furthermore,thepropermotionequationandaerodynamicmodelforthedeepstallmotionarebuiltu
6、p.7I'henanumericalcalculationoftheaircraftmo—tioneharacteristicswithemphasisondeepstalliSeompleted.Thecomparisonbetweenthecalculationresultandtheex-pefimentresuhhasgotagoodagreement.Basedonthecalculationresult。thedeepstallmotionmodeisselectedasthestallrecoveryparachutedesignCOndition.Finallyt
7、hemathematicmodelofstallrecoveryparachuteissetup,andtheaircraftrecoverydynamicprocessfromthedeepstallbyusingthestallrecoveryparachuteiscalculatednumerically.Thedesignparametersforthestallrecoveryparachuteareconfirmed,andtheresultcouldbeusedas
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