论文部分内容阅读
针对大气扰动建模中最复杂的大气紊流模型,借鉴国外根据实际情况所总结得出的具有统计特性的大气紊流数学模型,在VC++编译环境下编制仿真计算程序来进行模型解算,生成比较接近于真实的紊流数据。文中所采用的模型是基于测量和统计结果得到的Dryden大气紊流模型,经过生成大气紊流序列与原始频谱函数二者相关函数曲线的验证,并进行修正,说明采用这种方法所得到的大气紊流序列能够体现数学模型的频谱特性,满足数值仿真的要求。通过大气紊流的建模、仿真以及与飞机动力学模型相结合,就可以通过仿真的方法开展飞行器在大气紊流扰动下品质特性的分析。
Aiming at the most complicated atmospheric turbulence model in atmospheric disturbance modeling and drawing on the mathematical statistics of atmospheric turbulence obtained from abroad according to the actual situation, a simulation calculation program is compiled in VC ++ environment to solve the model. Relatively close to the true turbulence data. The model used in this paper is based on the Dryden atmospheric turbulence model obtained from the measurements and the statistical results. After validating and correlating the correlation function curves between the generated atmospheric turbulence sequence and the original spectral function, the model obtained by this method Atmospheric turbulence sequence can reflect the spectral characteristics of the mathematical model to meet the numerical simulation requirements. Through the modeling and simulation of atmospheric turbulence and the combination with the aircraft dynamics model, the simulation of the aircraft can be carried out to analyze the quality characteristics of the aircraft under disturbance of atmospheric turbulence.