摘要
太阳能飞机小刚度和大变形的特点导致其普遍存在颤振问题,因此有必要合理建立太阳能飞机的动力学模型并进行颤振分析。以国内某15米翼展太阳能飞机为研究对象,建立初始的动力学模型,然后根据目标颤振速度调节模型刚度,得到了与目标颤振速度匹配的机翼主梁刚度,从而实现太阳能飞机的动力学反向建模,并在此基础上进行颤振分析,形成完整的太阳能飞机颤振分析设计方法。结果表明:该机翼扭转刚度增大70%,其颤振速度可提高29%。本文方法可用于指导15米太阳能飞机的防颤振设计。
Flutter widely happens on solar-powered aircraft due to the slight stiffness and large deformation,so that it is significant to establish the dynamic model of solar-powered aircraft and analyze the flutter characteristics.Firstly,an initial dynamic model of a 15 meters span solar-powered aircraft is build,the reverse modeling is implemented by optimize the model stiffness according to the objective flutter speed.Then the flutter analysis is carried out and a complete method for flutter analysis of solar-powered aircraft is developed.Results show that the flutter speed will increase by 29%as the wing torsional stiffness increases by 70%.The present method can be used for wing structure design of the 15 meters span solar-powered aircraft.
作者
毛一青
杨飞
谷迎松
Mao Yiqing;Yang Fei;Gu Yingsong(Design Department,Shanghai OXAI General Aviation Company,Shanghai 201210,China;Flight Test and Operation Support Department,Shanghai Aircraft Design And Research Institute of COMAC,Shanghai 201210,China;School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《航空工程进展》
CSCD
2019年第4期536-541,共6页
Advances in Aeronautical Science and Engineering
基金
“长航时太阳能飞机”项目(ZN2017010303)
民用飞机激励响应仿真技术研究项目(XZ2016024)
关键词
太阳能飞机
颤振
模型
机翼
刚度
solar-powered aircraft
flutter
model
wing
stiffness
