非平稳大气紊流对弹性飞行器的影响

提出了采用复模态分析方法研究非平稳大气紊流对弹性飞行器的影响，首先给出了非平稳随机大气紊流模型，然后提出了弹性飞行器对非平稳随机大气紊流激励的复模态分析方法，该方法把复杂的随机动力响应计算问题转化为复代数运算问题，为研究飞行器对随机大气紊流的响应开辟了新的途径，最后以某型－空导弹为例，计算其对非平稳随机大气紊流的响应，从而说明非平稳随机大气紊流对弹性飞行器的影响。

Effect of Nonstationary Atmospheric Turbulence on Elastic Vehicles

in the paper, a complex modal analysis technique for analyzing the effect of nonstationary atmospheric turbulence on elastic vehicles is proposed. First, the model of nonstationary atmospheric turbulence is presented. Then a complex modal analysis method for dynamic response calculation of elastic vehicles to nonstationary atmospheric turbulence is introduced, which is a new methodology for studying the dynamic response of flight vehicles to random atmospheric turbulence and makes the complicated random response problems change into complex algebraic operation one. Finally,a ground-toair missile is taken as example, the response of it to nonstationary atmospheric turbulence is calculated, and the effect of nonstationary atmospheric turbulence on elastic vehicles is given. Comparing with priestley's evolutionary spectral analysis, the method issued in this paper is much simpler.