临近空间大气环境建模及其对飞行器影响

临近空间飞行器在大气层飞行的过程中，其飞行状态和工作性能会受到大气环境的影响。首先对临近空间大气的宏观变化和扰动类型进行了简要介绍，建立了基于国军标的中国地区平稳风模型和基于概率的最恶劣阵风模型，并研究了风场变化特性和阵风幅值变化规律，最后仿真分析了大气风场对飞行器弹道的影响。仿真结果表明：大气风场对飞行器的落点散布有显著影响，并且其影响结果与当地平稳风的长周期变化有关。

Near Space Atmosphere Modeling and its Effect on the Aircraft

In the process of near space aircraft flying in the atmosphere, the flight status and performance will be affected by atmospheric conditions. First of all, this paper briefly introduces the near space atmospheric macro change and disturbance type. A steady wind model based on Chinese national military standard and the worst gust model based on the probability are established in this paper. Then the characteristics of changes in wind field based on the wind model are analyzed. Finally, the simulation of the wind filed effects on the trajectory of the aircraft is presented. It is demonstrated that the wind field has a significant effect on the placement of aircraft and is related with the long period change of steady wind.