高温燃气引射系统对接试验验证

Docking test verification of high temperature gas ejector system

引射系统是化学激光器排气系统的核心组件。为提高排气系统引射效率并适应小型化、经济性等要求,提出一种采用燃气发生器产生高温燃气的引射气源方案,建立了“基于航空发动机单喷嘴燃烧室结构的燃气发生器+两级超声速引射器”组合的引射系统试验平台,开展了燃气发生器独立热试车,并实现了与引射器的对接试验。结果表明:燃气发生器点火可靠,运行稳定;在高温燃气的引射作用下,引射器启动迅速,工作平稳,各项性能指标优于设计值;引射燃气温度一定范围内的变化基本不影响引射器工作性能。相关研究结果可为引射系统方案设计及选取提供参考。

The ejector system is the key component of the chemical laser exhaust system.In order to improve the ejection efficiency of the exhaust system and meet requirements of miniaturization and economy,an ejection gas source scheme based on the gas generator to generate high temperature gas is proposed.A test stand of the ejection system composed of a gas generator based on structure of aero-engine mono-injector combustor and the two-stage supersonic ejector is established.An independent thermal test of the gas generator has been carried out and a docking test with the ejector has been successfully realized.Results show that ignition of the gas generator is reliable and the operation is stable;the ejector starts quickly and works smoothly under the action of high temperature gas injection,and performance indexes are better than design points:the ejector-gas temperature variation within a certain range does not affect the ejector performance.Research results expand the application of the gas generator,and at the same time,provide a powerful reference for the design and selection of ejector system solutions in this field.