在工程应用中,为提高固体火箭发动机优化设计效率和质量,以某小型发动机重量比冲为目标函数,利用遗传算法对其总体参数进行了优化设计。算法中新增添了一项倒位操作,并结合了罚函数法来处理不等式约束条件。计算结果表明,在给定空间里,采用遗传算法能快速得到设计变量的最优解,使发动机重量比冲和性能得到提高,为发动机设计师们提供了一个有效的优化设计手段。

In order to improve design optimization efficiency and quality for solid rocket motor, a small SRM was optimally designed with the impulse weight ratio as the objective by using genetic algorithm. This algorithm adds a reverse operation and combines with penalty function method to deal with the inequality constraints. The calculation results shows that in a given space, the genetic algorithm can obtain the optimal solution of the design variables quickly and effectively, and the impulse weight ratio is raised. It provides an effective method of optimization design for engine designers.