Abstract: A preliminary experimental study, including the design and test, on the cryogenic torch igniter was introduced Liquid hydrogen and oxygen was fed to the igniter through a coaxial injector, are ignited by a spark exciter The most portion of the hydrogen was used to dump cool the torch igniter Overall 5 tests with a total of 50 s hot firing tests of this igniter were carrid out The hot fire tests show the oxidizer rich igniter has the ability to ignite reliably cryogenic hydrogen oxygen propellant and has a wide working range

Key words: Hydrogen oxygen engine;Rocket engine ignitor;Electric ignitor;Ignition test

摘要： 介绍了低温高混合比火炬式电点火技术的初步研究进展,包括有关的设计参数和试验情况。该点火器用电火花塞作为激励能源,氢氧推进剂通过一个位于头部的同轴式喷嘴进入点火室,大部分液氢用作冷却剂通过排放冷却方式冷却点火室。累计5次共50s的热试车表明,高混合比火炬式电点火器能实现可靠的低温点火,并具有较广的工况和混合比变化范围。

关键词: 氢氧发动机;火箭发动机点火器;电点火器;点火试验