由于优异的推进性能和简单的结构,固体燃料冲压发动机是最受关注的增程推进系统。综述了固体燃料冲压发动机的特点和对富燃料推进剂的要求,重点介绍了该富燃料推进剂的分类,指出了燃料研制过程需要突破的关键技术,如固体燃料点火技术、抗高过载技术、燃烧效率提高技术、燃速控制技术、燃料综合性能提高技术等。 Due to its excellent propulsion performance and simple structure, solid-fuel ramjet engines are the most anticipated extended range propulsion systems. The characteristics of solid fuel ramjet engine and its requirements for fuel-rich propellants were reviewed. The classification of the fuel-rich propellants was introduced. Key technologies needed to be explored during the development of fuel were pointed out, such as solid fuel ignition technology, anti-overloading technology, Combustion efficiency improvement technology, burning speed control technology, fuel comprehensive performance improvement technology.