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提出了一种重复使用运载器(RLV)末端能量管理段的混合制导方案,以解决传统制导方案实现过于复杂的问题。在超音速飞行阶段,RLV飞行包线大,混合制导方案采用动压控制策略代替传统制导方案的高度控制策略,使得制导对轨迹剖面要求更少,轨迹参数计算量更小,控制结构也更加简单,从而大大简化了能量管理段的制导;在亚音速飞行阶段,RLV飞行包线小,混合制导方案采用与传统制导方案一致的高度/速度控制策略,其控制效果好,同时满足亚音速飞行阶段对飞行器高度、空速精确控制的要求。仿真结果表明,混合制导方案是可行的。
A hybrid guidance scheme of RLV end energy management segment was proposed to solve the problem of overcompletion of traditional guidance scheme. In the supersonic flight phase, the RLV flight envelope is large, and the hybrid guidance scheme adopts the dynamic pressure control strategy to replace the traditional altitude control strategy of the guidance scheme, making the guidance less required for the trajectory profile, the trajectory parameter calculation is smaller, and the control structure is simpler , Which greatly simplifies the guidance of the energy management segment. In the subsonic flight phase, the RLV flight envelope is small, and the hybrid guidance scheme adopts the same altitude / speed control strategy as the traditional guidance scheme, and the control effect is good. At the same time, the subsonic flight phase Requirements for precise control of aircraft altitude and airspeed. The simulation results show that the hybrid guidance scheme is feasible.