文献详情
Gust Response Analysis for Helicopter Rotors in the Hover and Forward Flights
文献类型期刊
作者Wang, Linpeng[1];Dai, Yuting[2];Yang, Chao[3]
机构
通讯作者Dai, YT (reprint author), Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
来源信息年:2017  
期刊信息SHOCK AND VIBRATION影响因子和分区  ISSN:1070-9622
摘要Dynamic load due to gust for helicopter rotors directly affects the structural stress and flight performance. In case of gust, it may cause the loss of trust force or the increase of deflection for rotors. In current work, an effective coupled aeroelastic model based on a medium-deflection beam theory and a nonlinear unsteady aerodynamic model in the time domain were constructed. Three types of gust in vertical direction were added in the model. The dynamic response and structural load for helicopter rotors under three types of gust were calculated, respectively. Results indicated that when rotors suffer a gust in hover at downward direction, the thrust force on rotor disk would decrease significantly when the gust amplitude increases, which should be paid attention in the design. Among the three gust types with the same gust strength, the maximum instantaneous shear force due to impulse shape gust is the largest. When the rotors suffer a gust in a forward flight, the shear force at the root of rotors would increase with the gust strength first but then it decreases. More attention should be paid to the decrease of thrust force and the increase of structural load in a forward flight.
收录情况SCIE(WOS:000404938800001)  
所属部门航空科学与工程学院
DOI10.1155/2017/8986217
学科声学;工程:机械;力学
人气指数62
浏览次数62
基金National Natural Science Foundation of China [11672018, 11402013]; Research Fund for the Doctoral Program of Higher Education of China [20131102120051]
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