Abstract: The development and problem during research process of rocket ramjet combined engine is introduced， the possible application areas and the development way of it is analyzed also. The conclusion is: this kind of engine has plenty of types， that should be suitable to its application; different key technology should be researched and integrated according to different engine type; the design of engine components should balance the performance of engine with vehicle， the design theory of rocket engine and ramjet engine used in rocket ramjet combined engine should be improved， the development of rocket ramjet combined engine need more advanced simulation technical and test facility， new test technical should be researched also.

Key words: Rocket ramjet combined engine；Application；Development

摘要： 简要介绍了火箭冲压组合发动机研究的现状和面临的问题，分析了火箭冲压组合发动机的应用方向和发展途径。认为火箭冲压组合发动机的研发，应针对不同的应用，产生针对性的方案；针对不同方案，注重相关关键技术集成；从飞行器总体性能角度一体化设计，平衡部件参数与性能；改进组合发动机用火箭发动机和冲压发动机的设计理念；加强仿真技术研究，优化试验系统建设，研究新型试验技术。

关键词: 火箭冲压组合发动机；应用；发展