第14卷第1期2023年2月Vol.14No.1Feb.2023航空工程进展ADVANCESINAERONAUTICALSCIENCEANDENGINEERING复合式高速直升机旋翼下洗流对机翼的气动影响分析刘超凡，朱清华，刘佳（南京航空航天大学直升机旋翼动力学国家级重点实验室，南京210016）摘要：对复合式高速直升机的旋翼两侧不同强度下洗流对机翼的气动干扰分析，可以为类似构型直升机的气动外形设计及优化提供一定的参考。采用动量源方法对复合式高速直升机悬停及前飞状态的流场进行数值模拟，分析旋翼两侧不同强度的下洗流对机翼的气动影响，研究改变旋翼桨盘高度和机翼展弦比对气动特性的影响。结果表明：复合式高速直升机前飞时，随着旋翼桨盘的增高，两侧机翼升力差峰值减小，且峰值落在更小速度处；随着机翼展弦比的增大，两侧机翼升力差峰值减小，且在峰值后同一速度下，机翼越细长两侧升力差越小。关键词：动量源；复合式高速直升机；旋翼；机翼；气动特性中图分类号：V211.52文献标识码：ADOI:10.16615/j.cnki.1674-8190.2023.01.04Aerodynamiceffectanalysisofrotordownwashonwingsofcompositehigh-speedhelicopterLIUChaofan，ZHUQinghua，LIUJia（NationalKeyLaboratoryofRotorcraftAeromechanics，NanjingUniversityofAeronauticsandAstronautics，Nanjing210016，China）Abstract：Theanalysisoftheaerodynamicinterferenceofthedownwashonwingsunderdifferentintensitiesonbothsidesoftherotorofthecompositehigh-speedhelicopter，canprovideacertainreferenceforthedesignandop⁃timizationoftheaerodynamicshapeofthesimilarconfigurationhelicopter.Theunsteadymomentumsourcemethodisusedtoperformthenumericalsimulationoftheflowfieldofacompositehigh-speedhelicopterinhoveringandforwardflightstates，andtheaerodynamiceffectsofdifferentdownwashonbothsidesoftherotoronwingsareana⁃lyzed.Theeffectofaerodynamiccharacteristicsonchangingtheheightoftherotordiscandtheaspectratioofwingisstudied.Theresultsshowthat，whenthecompositehigh-speedhelicopterfliesforward，thepeakliftdifferencebetweenthetwosidesofthewingisdecreasedwiththeincreaseoftherotordischeight，andthepeakvaluefallsatalowerspeed.Withtheincreaseofthewingaspectratio，thepeakliftdifferencebetweenthetwosidesisde⁃creased.Undertheconditionofsamespeedafterthepeakvalue，th...
