Abstract Rotating detonation combustors (RDC) are at the forefront of pressure gain combustion (PGC) research, utilizing one or more azimuthally spinning detonation waves, an intrinsically unsteady process, to effect a stagnation pressure rise across the device. The prospective step-increase in efficiency, simplicity of design without the requirement for mechanical actuations and the ease of assembly make it an especially promising technology that could be integrated into existing propulsion and power generation architectures. This is coupled with the significant complexity of the detonation-based multi-axis flow field and the associated combustion modes and coupling mechanisms. The current paper is an overview of the research done worldwide to address some of the challenges and questions pertaining to the physics of RDC operation. When appropriate, notable parallels are drawn to the phenomena of low and high frequency instabilities in solid and liquid rockets that have been recognized as the most severe hindrance to their operation.

中文翻译：

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旋转爆震燃烧器及其与火箭不稳定性的相似之处

摘要 旋转爆震燃烧器 (RDC) 处于压力增益燃烧 (PGC) 研究的前沿，利用一个或多个方位角旋转爆震波（一种本质上不稳定的过程）来实现装置上的停滞压力升高。效率的预期逐步提高、无需机械驱动的设计简单性以及易于组装，使其成为一种特别有前途的技术，可以集成到现有的推进和发电架构中。这与基于爆震的多轴流场以及相关的燃烧模式和耦合机制的显着复杂性相结合。当前论文概述了全球范围内为解决与 RDC 操作物理相关的一些挑战和问题而进行的研究。