高空高速飞行器飞行环境物理仿真研究

Physical Simulation of Flight Environment for High-Altitude High-Speed Vehicle

针对飞行时间短、速度和高度变化快、工作环境又十分严酷的飞行器,结合航空和航天领域现有相关技术,提出了适合于高空高速飞行的地面物理仿真试验方法——瞬态热平衡物理仿真试验技术。其中,气动热环境下蒙皮表面温度的计算机仿真和物理仿真是瞬态热平衡物理仿真试验技术的中心环节。阐明了把蒙皮表面温度仿真结果作为试验控制参数的思想,并着重介绍了高空高速飞行过程中蒙皮表面温度的动态仿真方法、物理仿真方法以及基于模糊控制的温度控制策略等关键问题,尤其是通过仿真实例分析了基于工程预测方法的动态仿真过程。

Vehicle is characterized by less flight time-consumption, high speed, quick change in altitude and rigorous flight environment. According to the present technologies being used in aeronautics and astronautics field, transitional heat balance physical simulation test technology, a new technology which couldbe applied to ground simulation test for high-altitude high- speed vehicle was put forward. The core part of transitional heat balance simulation test is dynamic simulation and physical simulation of the coat surface temperature in aerodynamic heating environment, Thoughts that coat surface temperature are regarded as control parameter of test was proposed. And key technologies, including computer simulation, simulated methods and temperature control strategy based on fuzzy control were introduced. Especially, dynamic simulation based on engineering prediction method by simulated example was analyzed.