一次进水角度对水冲压发动机比冲性能影响研究  

Effect of primary water penetration angle on specific impulse of water ramjet

作　　者：韩超[1] 夏智勋[1] 胡建新[1] 赵宁[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2009年第5期496-499,共4页Journal of Solid Rocket Technology

摘　　要：为了研究一次进水角度对二次进水水冲压发动机比冲性能的影响规律,建立了发动机补燃室两相流反应模型,对镁基水冲压发动机补燃室流场进行了数值模拟,获得了发动机喷管出口温度、出口压力、出口气流速度及发动机比冲随一次进水角度的增大先升高后降低的变化趋势,在此基础上进行了水冲压发动机地面直连式试验研究。结果表明,一次进水角度在40°左右时,二次进水水冲压发动机比冲性能较优。A two-phase reaction model of the secondary combustor was established to study the effect of primary water penetration angle on engine performance of magnesium-based water ramjet with secondary water penetration. The change tendency of specific impulse, temperature, velocity and pressure of nozzle exit were obtained with primary water penetration. Direct-connected tests were carried out in order to validate the correctness of the numerical simulation. The result shows that as the primary water penetration angle between 40°, the specific impulse of water ramjet become better.

关 键 词：水冲压发动机 比冲性能 一次进水 数值模拟 直连式试验 

分 类 号：V439[航空宇航科学与技术—航空宇航推进理论与工程]