Page 53 - 《爆炸与冲击》2026年第9期

第 46 卷 吴 宇，等： 进口压力扰动对氢气燃料旋转爆轰特性的影响 第 9 期

冲曲线呈现近似正弦规律波动，波动周期与进口的时间扰动频率对应。当量比及 RDW 的传播模态共同
决定了燃烧室内的燃烧放热情况，进而决定了出口推力的大小，而比冲的大小只取决于当量比的变化，
且两者之间呈负相关。
将上述研究发现应用于实际工程仍面临诸多挑战。在实际飞行过程中，特别是当飞行器执行机动
动作时，进气道往往会产生复杂的进气流扰动，这些扰动极易改变燃烧室入口边界条件并诱发燃烧不稳
定现象。与此同时，压力扰动通常源于供给系统与燃烧室之间的声学及动力学耦合效应，且其对旋转爆
轰波传播特性的影响已被广泛关注与研究。因此，未来的工程挑战在于如何通过进气道与供给系统的
协同优化设计，将这些复杂的入口扰动限制在安全可控范围内，并尽可能满足高频、低幅值的扰动特征
要求，从而实现旋转爆轰发动机相对稳定的燃烧状态与推力输出。

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