【摘 要】
：
对2种计算升力式再入飞行器可达区域的方法进行了分析和探讨。首先建立了飞行器三自由度运动方程模型和升力式飞行器基于准平衡假设下的简化模型;然后基于最优控制方法,考虑
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对2种计算升力式再入飞行器可达区域的方法进行了分析和探讨。首先建立了飞行器三自由度运动方程模型和升力式飞行器基于准平衡假设下的简化模型;然后基于最优控制方法,考虑过程约束和终端约束推导了闭环倾侧角控制律,采用双参数搜索法求取不同纵程下的最大横程;最后,以一种升力式飞行器为例分别用优化方法和常值倾侧角法进行仿真分析,结果表明常值倾侧角法可以代替优化方法进行分析与设计。
Two methods to calculate the reachable area of lift reentry vehicle are analyzed and discussed. Firstly, a three-DOF kinematic equation model and a simplified model based on the quasi-equilibrium assumption of the lift vehicle are established. Then, based on the optimal control method, the closed-loop roll angle control law is derived considering the process constraints and the terminal constraints. The two-parameter search method Finally, taking a lift vehicle as an example, the optimization method and the constant roll angle method are respectively used for the simulation analysis. The results show that the conventional roll angle method can be used instead of the optimization method to analyze and design.
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