长征四号运载火箭三级发动机研制综述  

Summary of the Development of the Three-Stage Engine of the Long March-4 Launch Vehicle

作　　者：罗文 姜勇 李元启 王冠男 张涛[1] LUO Wen;JIANG Yong;LI yuanqi;WANG Guannan;ZHANG Tao(Xi’an Aerospace Propulsion Institute,Xi'an 710100,Shaanxi,China)

机构地区：[1]西安航天动力研究所,陕西西安710100

出　　处：《上海航天（中英文）》2023年第S01期199-206,共8页Aerospace Shanghai（Chinese&English）

摘　　要：长征四号系列运载火箭三级YF-40系列发动机的研制经历近50年,曾多次完成了我国重大航天工程任务。作为我国首款泵压式高空多次起动液体火箭发动机,首次发明了自燃推进剂液体火箭发动机的“高空点火、多次起动、双向摇摆”技术。YF-40系列发动机性能稳定、结构可靠,伴随CZ-4系列火箭历经百余次飞行,为我国的航天事业做出了不可磨灭的贡献。对YF-40系列发动机的研制历程、关键技术研制、典型质量问题和经验教训等进行介绍。The Long March 4 rocket three-stage YF-40 series rocket engine development has been carried on for more than 50 years and has completed many key space engineering missions in China.As China's first high-altitude pump pressure type multi-start liquid rocket engine,the technology of"high-altitude ignition,multi-start and two-way swing"has been solved initially.With its stable performance and reliable structure,YF-40 has accompanied the Long March 4 rocket nearly a hundred times flights and has contributed indelibly to China's aerospace industry.In this paper,the development of the YF-40 series rocket engine,key technology,and several typical quality issues was summarized and introduced.

关 键 词：高空发动机 研制历程 多次起动 高空点火 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]