为研究对固体运载器总体性能提升有利的发动机内弹道设计方法,建立了发动机内弹道计算模型,并选取两个燃面设计参数表征内弹道曲线构型。针对某三级固体运载器进行了仿真分析,分别以发动机冲质比最大及运载器射程最大为目标对发动机的内弹道曲线构型进行优化设计,并对这两种设计方法进行对比研究。研究结果表明,发动机性能最优并不一定会实现运载器总体性能最优,以运载器射程最大为目标,对发动机内弹道曲线构型进行优化设计,可显著提高运载器总体性能。研究成果可应用于固体运载器总体方案初步论证阶段,提升固体运载器的性能水平及方案论证效率,使固体运载器总体设计方案更具时效性和竞争性。
To research the interior ballistic design method for improving the overall performance of the solid launch vehicle motor, a calculation model for the motor interior ballistic is established, and two parameters of burning surface design are selected to represent the configuration of the interior ballistic curve. Simulation analysis of a three-stage solid launch vehicle is carried out. The interior ballistic curve configuration of the motor is optimized, with the objectives of the maximum impulse to mass ratio and of the maximum range of launch vehicle. A comparison of the two design methods shows that the optimal performance of the motor does not necessarily mean the best overall performance of the launch vehicle. With the maximum range of the launch vehicle as the objective of the optimal design of the interior ballistic of the motor, the overall performance of the launch vehicle can be significantly improved. The results can be applied to the preliminary demonstration stage of the overall scheme of the design of the solid launch vehicle, enhancing the performance level of the solid launch vehicle and the efficiency of scheme demonstration. The overall design scheme of the solid launch vehicle can thus be more timely and competitive.
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