高混合比火炬式电点火器试验研究

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。

Experimental study on high mixture ratio torch ignitor

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