Weissman准则在升力式再入飞行器设计中的应用

Application of Weissman criterion in the design of lift reentry vehicle

针对升力式再入飞行器的气动特性和控制方式,分析了将传统Weissman判据推广应用到升力式再入飞行器设计中面临的一些主要问题。由赫尔维茨稳定性定理推导了采用反馈控制的滚转反逆准则的计算形式,并以HL-20飞行器为对象,采用非线性仿真和Kriging建模方法,实现了对Weissman图不同稳定性敏感区域的划分。仿真分析表明,升力式再入飞行器对应的Weissman图与传统航空飞行器存在明显不同,可以将其推广应用到升力式再入飞行器设计中。

According to the aerodynamic characteristic and control mode of lift reentry vehicle, the main problems which prevent the Weissman criterion from applying in the design of lift reentry vehicle are analyzed. The computational formula of roll inversion criterion with feedback control is deduced based on the Helwitz stability theorem. Then the Weissman chart’s different stability sensitive zones are divided by nonlinear simulation and Kriging modeling for HL-20. The simulation analysis results show that Weissman chart for lift reentry vehicle is obviously different from that for traditional aircraft, and it is suitable to guide the design of lift reentry vehicle.