变循环发动机性能优化方法研究

Study on Performance Optimization Approach of Variable Cycle Engine

针对变循环发动机性能参数确定的复杂性,提出变循环发动机性能优化参数的表示方法。建立了带有约束条件的发动机性能优化模型,利用搜索算法,求解了在发动机耗油率达到最小和单位推力达到最大时的参数取值,并给出了马赫数与参数之间的变化规律。分析结果证实了该优化模型的稳定性。

Because it is complicated to confirm the performance parameter of variable cycle engine, the optimization performance parameter of variable cycle engine was presented. The performance optimization model of engine with constrained conditions was set up, then, use the search algorithm, the parameters were acquired, based on the minimum fuel consumption rate and maximum unit thrust of engine. At last, the variation principle between Mach number and parameters was given. The analysis results show the stability of the optimization model.