论文部分内容阅读
航天飞机尾部有三台以液氢液氧为推进剂的液体火箭发动机,称之为主发动机。三台主发动机的结构是完全一样的。发动机具有两个预燃室,涡轮泵输出的大部分燃料和小部分氧化剂在预燃室内进行富燃料燃烧(氧:氢约为0.8),燃气温度在600～700℃左右,用来驱动涡轮,然后排入主燃烧室与其余的氧化剂进行补充燃烧,形成高温高压燃气从燃烧室喷口排出。三台主发动机合起来可以提供600多吨的推力。发动机中氢系统和氧系统的工作环境是极
The rear of the space shuttle has three liquid rocket engines powered by liquid hydrogen and oxygen as the main engine. The structure of the three main engines is exactly the same. The engine has two pre-combustion chambers. Most of the fuel and a small portion of the oxidant output from the turbo pump are fuel-burned (oxygen: hydrogen is about 0.8) in the pre-combustion chamber. The gas temperature is about 600-700 ° C., And then discharged into the main combustion chamber with the rest of the oxidant for supplementary combustion, the formation of high temperature and pressure gas discharged from the combustion chamber spout. Together, the three main engines provide more than 600 tons of thrust. The hydrogen and oxygen systems in the engine have a very working environment