论文部分内容阅读
针对水冲压发动机这一新型动力系统,详细分析了其工作过程,并建立了相应的热力计算模型。结合质量守恒方程、化学平衡方程和能量守恒方程建立了发动机热力计算理论,预估了发动机的性能,初步设定了燃烧室的工作压力,并分析了比冲、推力以及特征速度等性能参数随进水量的定性变化规律。综合考虑发动机性能及燃烧反应的启动温度,得出一次进水水燃比限定在0.5~1.9之间,总水燃比的上限为5.1,而水燃比为3.5时对应着最高比冲。
Aiming at the new hydraulic system of water-ramjet engine, its working process is analyzed in detail and a corresponding thermal calculation model is established. Combined with the mass conservation equation, chemical equilibrium equation and energy conservation equation, the theory of engine thermal calculation was established, the performance of the engine was estimated, the working pressure of the combustion chamber was preliminarily set, and the performance parameters such as specific impulse, thrust and characteristic velocity The qualitative changes of water inflow. Considering the engine performance and the start-up temperature of the combustion reaction, it is concluded that the initial water-to-oil ratio is limited to between 0.5 and 1.9, the upper limit of the total water to air ratio is 5.1, and the water ratio of 3.5 corresponds to the highest specific impulse.