吸气式汽油/空气脉冲爆震发动机组合气动阀研究

Investigation on Combined Aero-Valve of Air-Breathing Gasoline-Air Pulse Denotation Engine

研究了一种高性能吸气式脉冲爆震发动机(PDE)气动阀。将钝体和旋流两种气动阀串联安装在PDE进气道内,通过改变气动阀和喷嘴位置,构成多种组合气动阀。实验表明:组合气动阀能够产生连续的爆震波;上游钝体气动阀和下游旋流气动阀的组合效果最好;组合气动阀的爆震燃烧性能优于单个气动阀;钝体气动阀优于旋流气动阀。研究结果对开发新式的气动阀结构和燃油雾化蒸发掺混装置有重要指导意义。

A technique of combined aero-valve to advance the air-breathing pulse detonation engine （PDE） is investigated. The combined aero-valve is composed of a blunt aero-valve and a swirling aero-valve placed in the PDE inlet in series and different combination forms can be obtained by altering their location. The results show that the combined aero-valve can produce continuous detonation waves and the optimal type is the combination with blunt aero-valve in the front and swirling aero-valve in the after. The detonation combustion performance of combined aero-valve is better than that of a single aero-valve, while the blunt aero-valve is better than the swirling valve. These results are important to develop novel aero-valve structure and the fuel atomizing-vaporizing-mixing device.