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实验研究了质量流率对旋转爆震波传播速度的影响,结果表明:对于给定几何结构的发动机,存在一个临界质量流率,当质量流率小于该值时,旋转爆震波的速度较低且存在较大随机性;当质量流率大于临界值时,旋转爆震波的速度变化趋势与CJ爆震理论一致.针对低质量流率工况下出现的较大速度亏损现象,提出了两种导致该现象的可能机制,即燃烧室发生声学耦合燃烧和燃烧产物在爆震波到达之前与反应物充分混合,进一步分析对比了这两种机制,分析结果表明,两种假设都能够较好解释低质量流率下爆震波的较大速度亏损现象,但燃烧室发生声学耦合燃烧的假设更符合实验结果.“,”The effect of mass flow rate on the propagation velocity of rotating detonation wave was experimentally studied, the results showed that there is a critical mass flow rate for a given rotating detonation combustor, the measured wave speeds were relatively low and distributed randomly for the mass flow rate being smaller than the critical value, while the measured wave speeds increased monotonically with equivalence ratio for the mass flow rate being higher than the critical one.Two possible assumptions including acoustically-coupled combustion and mixing of combustion products and reactants upstream of the detonation wave were proposed to account for the large velocity deficit phenomena in the low mass flow rate cases, and the result indicated that acoustically-coupled combustion rather than mixing of products and reactants is more likely to occur in rotating detonation combustor.