Structure Optimization for the Grain of Solid Rocket Motor

Liu Yang, S. Jiuling, Cai Qiang, Bao Futing, Hui Weihua
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引用次数: 1

Abstract

In order to coordinate the many design parameters of the solid rocket motor (SRM) grain to get a better performance. A structure optimization method based on variation sketch and genetic optimization algorithm is proposed. Then by choosing a slotted-tube grain as the example, corresponding structure parameters optimization processes show the efficiency and convenience of this advanced structure optimization method. The objective function of SRM internal ballistics curves are converged after about 500 generations' evolution. The SRM internal ballistics curves comparison with initial one and optimized one also shows that the fluctuation range of the internal ballistics curve is reduced from about 20% to 8%. This is helpful to reduce the negative weight of SRM and improve its performance. It proves the accuracy of this grain design and optimization method.
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固体火箭发动机颗粒结构优化
为了协调固体火箭发动机(SRM)的众多设计参数,以获得更好的性能。提出了一种基于变异草图和遗传优化算法的结构优化方法。并以开槽管晶粒为例,进行了相应的结构参数优化过程,验证了该先进结构优化方法的有效性和便捷性。经过约500代的演化,SRM内弹道曲线的目标函数趋于收敛。对初始和优化后的SRM内弹道曲线进行了对比,结果表明,优化后的SRM内弹道曲线波动幅度由20%左右减小到8%左右。这有助于降低SRM的负重量,提高SRM的性能。验证了该颗粒设计与优化方法的准确性。
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