Abstract: The methodolgy to control the burning rate of Low burning rate HTPB propellant is studied.The results showed that the burning rate of the propellant is mainly dependent on the particle size of spherical ammonium perchlorate(AP).The variations in burning rate caused by different bartches of the raw materials are lower than the design tolerance.The blocking of non spherical AP particles in storgae decrease the burning rate.The burning rate of the propellant manufactured in 10 L mixer is little higher than that in 500 L mixer.

Key words: Hydroxy terminated polybutadiene propellant;Burning rate test;Control

摘要： 研究了低燃速ＨＴＰＢ推进剂药柱燃速的控制规律，结果表明：球形高氯酸铵的粒度是决定燃速的主要因素；在粒度相同的情况下，原材料换批等其它工艺因素的差异导致的燃速变化值小于设计公差；经粉碎处理的细粒使高氯酸铵在存放期结块导致燃速缓慢的下降；１０Ｌ预示燃速略高于５００Ｌ随机燃速。

关键词: 端羟基聚丁二烯推进剂;燃速测试;控制