姿控载荷多约束下的内外弹道联合优化

为提升固体运载器整体性能，提出一种姿控载荷多约束的内外弹道联合优化建模方法。首先，建立固体运载器内弹道计算模型和外弹道计算模型，给出大风区和级间分离的姿态控制模型以及杆状减阻装置载荷计算模型。其次，以灵敏度分析方法选择出内外弹道设计参数作为优化设计变量，将姿控摆角需求、减阻杆承载能力作为约束条件，建立以射程最优为目标的优化模型。最后，将该方法应用在某三级固体运载器的优化设计中，以差分进化算法开展仿真校验，射程提高了10.8%，并且优化结果满足姿控和载荷约束。

Interior and Exterior Ballistics Coupled Optimization with Constraints of Attitude Control and Flight Load

To improve the performance of solid launch vehicle, a modeling method of interior and exterior ballistics coupled optimization with constraints of attitude control and flight load is proposed. Firstly, the interior and exterior ballistic models of the solid launch vehicle are established, the attitude control model of the high wind area and the stage separation as well as the load calculation model of the drag reduction device are presented. Secondly, the optimization model is established to optimize the range, which takes the interior and exterior ballistic design parameters as variables selected by sensitivity analysis, and the attitude control and load conditions as constraints. Finally, the method is applied to the optimal design of a three-stage solid launch vehicle simulation with differential evolution algorithm. Simulation results show that the range is improved by 10.8%, and both attitude control and load constraints are satisfied.