关键词: 固体火箭发动机;推进剂包覆;火箭发动机衬层;发射药烧蚀性能

Abstract: This paper summarizes the latest advance of liner techniques. In order to meet the needs of design and application in the engine, and to prevent from poor bonding, the liner compositions and techniques that can improve the adhesive performance must be investigated. Two methods are introduced in this paper. One is chemical. The adhesion strength of adhesive between propellant and case or insulator can be greatly increased by means of the liner containing dimer isocyanate or terminal blocking agent. Another is mechnical.On the basis of high adhesive properties of the liner layer, the advance in research of liners with special functions for rocket engine will also be made. The ideal liner will have good adhesive properties, as well as insulating functions, no smocking, shielding etc. The multifunction liner in the solid rocket engine will be developed in the future.

Key words: Solid rocket engine;Propellant warp;Rocket engine lining;Ablation property of propellant