气氧/丙烷小推力发动机设计与实验  

Design and experimental research of a gas oxygen/propanesmall thrust engine

作　　者：李君海[1] 曾鹏[1] 俞南嘉[1] 蔡国飙[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《航空动力学报》2011年第10期2352-2357,共6页Journal of Aerospace Power

摘　　要：为适应小推力发动机无毒、无污染、高性能、低成本的发展趋势,设计了一种以气氧(GO2)/丙烷(C3H8)为推进剂的发动机.采用层板式头部喷注器、利用喷嘴间隙实现电火花点火的独特点火方案、通过边区喷嘴进行气膜冷却,同时设计了发动机实验系统并开展了初步实验研究.实验结果表明:实验系统设计合理;发动机点火方案可靠、燃烧稳定、热防护效果良好,为进一步的研究奠定了基础.A kind of small thrust engine,using gas oxygen and propane as the propellants,was designed in tune with the development of new generation small thrust engine that features non-toxicity,non-pollution,high performance and low cost.With platelet injectors,electrical spark ignition was implemented using the gap between different injectors.The film cooling injectors were used for cooling the body of the engine.An experimental system was designed and a series of experiments were conducted.The results show that the experimental system scheme is reasonable.The ignition of the engine is reliable and the combustion is stable,showing good effect of thermal protection.The experimental system and small thrust engine work well,indicating they are excellent fundamental platforms for the future investigation.

关 键 词：气氧/丙烷推进剂 小推力发动机 层板喷注器 电火花点火 气膜冷却 实验系统 

分 类 号：V431[航空宇航科学与技术—航空宇航推进理论与工程]