80 kN富氧补燃发动机燃气发生器-推力室深度变工况直连热试研究  

Study on Gas Generator and Combustion Chamber Deep Throttling Hot Firing Tests of 80 kN Oxygen-enriched Staged Combustion Engine

作　　者：李春红[1] 卢亮亮 高玉闪[1] 邢理想[1] 陈文 LI Chunhong;LU Liangliang;GAO Yushan;XING Lixiang;CHEN Wen(Xi’an Aerospace Propulsion Institute,Xi’an 710100,China;Center for Lunar Exploration and Space Engineering,Beijing 100048,China)

机构地区：[1]西安航天动力研究所,西安710100 [2]探月与航天工程中心,北京100048

出　　处：《载人航天》2022年第2期244-251,共8页Manned Spaceflight

基　　金：载人航天领域预先研究项目(050301)。

摘　　要：针对80 kN富氧补燃循环发动机燃气系统工作特性,对燃气发生器与推力室直连试验装置开展了深度变工况热试研究,提出了一种挤压式供应的燃气发生器与推力室直连热试方法,对双燃烧组件燃气系统进行了基于绝热模型和声学模型的稳定性建模仿真分析,获得了双燃烧组件在80%~20%变工况工作特性、点火特性、燃气路低频衰减特性。结果表明:采用高压降喷嘴的推力室喷注器可以实现80%~20%大范围变工况稳定工作,且点火冲击小,参数平稳,同时验证了声学模型更适于燃气系统低频特性仿真。To obtain the operation characteristics of the gas system of 80 kN oxygen-enriched staged combustion engine,deep throttling hot firing tests were conducted with the gas generator and combustion chamber directly connected.The gas generator was used to produce hot gas which was compressed into the combustion chamber.Compatibility between the gas generator and the combustion chamber was tested under deep throttling working conditions.80%~20% deep throttling working conditions were realized by regulating the liquid oxygen and kerosene and the hot gas feeding system.The results indicated that high pressure drop co-axial swirl injection gas generator and the combustion chamber could realize 80%~20% stable working condition.Frequency response characteristics of the hot gas system was calculated with adiabatic model and acoustics model and the results showed that the acoustics model could simulate the frequency response characteristics more accurately than that of the adiabatic model.

关 键 词：富氧补燃发动机 深度变工况 发生器 推力室 热试 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]