中国脉冲爆震发动机技术研究现状及分析

脉冲爆震发动机是利用脉冲式爆震波产生推力的新概念推进系统,具有热循环效率高、结构简单、成本低和质量轻等诸多优点,因而与其相关的科学与技术问题引起世界性关注.讨论了脉冲爆震发动机的工作模式和应用前景,简要回顾了近年来中国脉冲爆震发动机的研究工作,包括燃料的喷射与混合、起爆、爆燃向爆震转变机理、进气道、增推方法、性能分析与数值模拟、多管PDE、组合循环与混合循环、结构强度/换热/噪声分析等.总结了研究中所取得的理论、试验和数值研究成果,对未来脉冲爆震发动机的技术路线和发展方向进行了展望.

A Review on Research Status of Pulse Detonation Engine in China

Pulse Detonation Engine (PDE) is new-concept propulsion systems, which utilize repetitive detonations to produce thrust or power. Due to its obvious advantages in thermodynamic cycle efficiency, structure simplicity, low cost and low weight, worldwide attentions have been paid to the scientific and technical issues concerning with PDE. The working modes and application prospects of PDE were discussed. The study works including fuel injection and mixing, detonation initiation, mechanisms of deflagration to detonation transition, inlets of airbreathing PDE, methods of thrust augmentation, performance analysis of PDE, numerical investigation of detonation wave, multi-tube PDE, concepts of combined-cycle and hybrid-cycle PDE-based engines, analysis of structure strength, heat transfer and noise of PDE were briefly reviewed on PDE in China. The fruits of theoretical, experimental and numerical studies on PDE were obtained. The technical way and trend of PDE were prospected in the future development