【摘要】 为了准确分析汽油/空气脉冲爆震发动机(PDE)的推进性能,根据x-t平面上带喷管的PDE传播模型,考虑了进气道、主爆震燃烧室和喷管对PDE性能的贡献,利用特征线法给出了一种PDE性能的计算方法.通过研究飞行马赫数和发动机结构参数对推进性能的影响,得出了不同飞行马赫数下,PDE性能的变化趋势;发动机性能与PDE结构参数存在定量关系.研究结果对PDE结构参数设计和性能优化提供了依据.更多还原

【Abstract】 To accurately analyze the propulsive performance of gasoline-air Pulse Detonation Engine(PDE),according to physical model of the detonation wave propagation process on the x-t plane,a performance calculation model of the PDE is developed by applying the method of characteristics considering the effects of air inlet,detonation chamber and nozzle on PDE performance attributes.The effects of flight Mach number and structural parameters on propulsive performance was studied,and the variation trends of PDE performance under different flight Mach number.There is quantitative relation between performance and structural parameters.The study result offers reference for the structural design and performance optimization of PDE.更多还原