关键词: 冲压发动机, 含硼凝胶推进剂, 关键技术, 非牛顿流体, 雾化技术, 燃烧组织

Abstract: The boron-loaded gel propellant, made by adding boron powder, gelling agent and other modified substances into liquid fuel, is an ideal fuel providing power for limited volume propulsion devices such as ramjet. However, the application of boron-loaded gel propellant also brings new technical challenges, including the preparation of high-boron-content gel pro-pellant with excellent stability and rheological properties, controllable supply and efficient atomization of propellant, effi-cient combustion organization of ramjet and so on. The development history of boron-loaded gel propellant and the related research work carried out at home and abroad are summarized, and the atomization technology of gel propellant is intro-duced in detail. On the basis of integrating a large number of research achievements, the problems that still need to be further studied are proposed. The combustion characteristics of single droplet and spray of boron-loaded gel fuel were summarized, the research work on boron-loaded gel ramjet at home and abroad was reviewed, and the combustion or-ganization characteristics of boron-loaded gel ramjet were introduced. Finally, the research direction of boron-loaded gel ramjet was summarized and prospected.

Key words: ramjet, boron-loaded gel propellant, key technologies, non-Newtonian fluids, atomization technology, combustion organization