Three Degree-of-freedom Aeroelastic Stability Evaluation of Cruise Missile Wing by the Monte Carlo Method
The high-aspect ratio aircraft elastic structure which can translation and torsion at the same time in the airstream were studied in this paper, The translation includes vertical direction and landscape orientation, so there are three directions in the structure vibration. It means that there are three degree-of-freedom movements when the aeroelastic phenomenon is happened. The three degreeof-freedom elastic deformation were considered in the analysis, The relevant energy equations were conducted based on the mathematics model, The discriminant of the system aeroelastic stability were obtained through the Lagrange equation at last Due to the randomicity of the system parameters in the course of manufacture, the actual results may appear instability and uncertainty when there are lots of the uniform products; So we must use the method of Monte Carlo to evaluate its stability and reliability, We can simulate to get the results by selecting appropriate random seed and distribution law of random variables. The aeroelastic analysis of a batch of cruise missiles wings under 0. 8 Mach were performed by the Monte Carlo method in this paper, and the conclusions indicated that the batch of wings will be steady.
aeroelastic structure vibration three degree-of-freedom Monte Carlo stability
Xu Zhaoqing Wu Junji Xue Xiaozhong
School of Power Engineering, Nanjing University of Science and Technology, Nanjing 210094,China School of Power Engineering, Nanjing University of Science and Technology,Nanjing 210094,China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
913-916
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）