To improve the propulsive performance, exhaust nozzles are desired for rotating detonation engines in practical applications. Therefore, their effects on the upstream behaviors inside the combustion chamber are required to be clarified. This study focuses on the characteristics of rotating detonation waves influenced by different outlet configurations. Three types of aerospike nozzle configurations are developed with different throat areas. Ethylene and oxygen-enriched air with an oxygen volume fraction of 50% are utilized in this study. When nozzles are employed, five wave propagation modes (i.e., the single-wave mode, the counter-rotating wave mode, the self-adjustive mode, the periodic oscillation mode, and the deflagration mode) are observed with the equivalence ratio ranging from 0.33 to 1.39, while only single-wave mode appears in the nozzle-less case under the same operating conditions. When increasing the equivalence ratio or reducing the nozzle throat area, those unstable propagation modes are more likely to happen and three boundaries of the equivalence ratio for the wave propagation transformation are clarified. On the contrary, the standard deviations of propagation velocities in the stable propagation process are smaller when employing nozzle configurations compared to the nozzle-less cases, which indicates a more stable state of the wave propagation although the stable propagation range is narrowed. Besides, the pressure rise and specific thrust are analyzed under different outlet configurations.

为了提高推进性能，实际应用中旋转爆震发动机需要排气喷嘴。因此，需要阐明它们对燃烧室内上游行为的影响。本研究侧重于受不同出口配置影响的旋转爆震波特性。三种类型的气动尖刺喷嘴配置具有不同的喉部区域。本研究使用了氧气体积分数为 50% 的乙烯和富氧空气。采用喷管时，观测到五种波传播模式（即单波模式、反向旋转波模式、自调整模式、周期振荡模式和爆燃模式），当量比范围为0.33至 1.39，而在相同工况下，无喷嘴情况下仅出现单波模式。当增大当量比或减小喷管喉部面积时，那些不稳定的传播模式更容易出现，并明确了波传播变换的当量比的三个边界。相反，与无喷嘴情况相比，在稳定传播过程中传播速度的标准偏差更小，这表明虽然稳定传播范围变窄，但波传播的状态更稳定。此外，分析了不同出口配置下的压升和比推力。那些不稳定的传播模式更容易发生，并且明确了波传播变换的当量比的三个边界。相反，与无喷嘴情况相比，在稳定传播过程中传播速度的标准偏差更小，这表明虽然稳定传播范围变窄，但波传播的状态更稳定。此外，分析了不同出口配置下的压升和比推力。那些不稳定的传播模式更容易发生，并且明确了波传播变换的当量比的三个边界。相反，与无喷嘴情况相比，在稳定传播过程中传播速度的标准偏差更小，这表明虽然稳定传播范围变窄，但波传播的状态更稳定。此外，分析了不同出口配置下的压升和比推力。与无喷嘴情况相比，稳定传播过程中传播速度的标准偏差更小，这表明尽管稳定传播范围变窄，但波传播状态更稳定。此外，分析了不同出口配置下的压升和比推力。与无喷嘴情况相比，稳定传播过程中传播速度的标准偏差更小，这表明尽管稳定传播范围变窄，但波传播状态更稳定。此外，分析了不同出口配置下的压升和比推力。