关键词: 双基推进剂;平台推进剂;稀土化合物;燃烧催化剂

Abstract: The effects of binary mixtures composed of lanthanum (cerium) /copper salts,lanthanum/lead salts, lanthanum/cerium and binary composition of lanthanum/cerium prepared by baking on the combustion of DB propellants are studied. The resluts show that lanthanum/copper salts are advantageous to improve the plateau combustion of DB propellants, and lanthanum/lead salts remove the plateau combustion to the high pressure range. The combustion catalysis of lanthanum/cerium binary mixture (or composition) on DB propellants is related to the ratio of lanthanum/cerium and the binary mixtures (or composition) of La/Ce enable DB propellants to bring about more than two plateau combustion area.

Key words: Double base propellants;Mesa-burning propellant;Rare earth compound;Combustion catalyst