关键词: 丁羟推进剂;少烟;无铝;燃烧性能;燃烧稳定剂

Abstract: In order to meet the demand of solid rocket motor on the reduced smoke and aluminum-free propellant， combustion performance of this type of propellant within wide pressure range from 1 to 22MPa was investigated. By adding high-melting-point burning stabilizer and adopting compound pressure exponent modifier， the effects of burning stabilizer（CW-1） and composite pressure exponent modifier（YZJ-A/B） which were organic barium salt （YZJ-A） and quaternary ammonium salt-ferrocene salt （YZJ-B） on burning rate， pressure exponent， energy performances and smoke characteristic signal were studied， using static burning rate tester， standard test motor， full-size rocket motor and static smoke box tester. Results show that the propellant can burn stably at pressure of 1 to 22MPa， when a part of aluminum powder was replaced by high-melting-point burning stabilizer （CW-1） that takes 1% to 4% of whole propellant. In this condition， the propellant specific impulse and smoke characteristic signal decrease. When composite pressure exponent modifier including YZJ-A/B are added， the propellant dynamic pressure exponent at 17 to 22MPa decreases from 0.39 to 0.275.

Key words: HTPB propellant;Reduced smoke;Aluminum-free;Combustion performance;Burning stabilizer