氧压降对气-气喷注器燃烧过程的影响  

The Effect of Oxygen Drop on Combustion Process Gas-Gas Injector

作　　者：杜正刚[1] 高玉闪[1] 蔡国飙[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100083

出　　处：《宇航学报》2009年第2期675-679,共5页Journal of Astronautics

基　　金：863高技术项目(2007AA702305)

摘　　要：开展气氢/气氧为推进剂的同轴剪切喷注器的热式试验研究。通过测量燃烧室压力和燃烧室壁面温度,研究在速度比一定的条件下,氧喷嘴压降变化对燃烧位置和燃烧效率的影响。研究结果显示氧压降变小使推进剂的燃烧效率提高,喷注压降变化对气-气推进剂的燃烧位置影响很小;气-气喷注器的设计可以选取小的氧喷注压降。The hot fire tests were conducted on shear coaxial injector that utilizes gaseous oxygen and gaseous hydrogen as propellants. Through the measurements of chamber pressure and the wail temperature, the effects of oxygen injection drop on combustion efficiency as well as the combustion location of propellants were investigated. The results display that the lower oxygen injection drop results in higher combustion efficiency, and the variation of oxygen injection velocity has a little impact on the combustion location. The low oxygen drop could be selected for the design of gas-gas injector.

关 键 词：氧压降 喷注器 燃烧位置 燃烧效率 

分 类 号：V434.13[航空宇航科学与技术—航空宇航推进理论与工程]