几何尺寸对管状变燃速发射药燃烧性能的影响  

Effects of Physical Dimension on Combustion Performance of Tubular Variable-burning-rate Gun Propellant

作　　者：张丽华[1] 马忠亮[1] 刘幼平[1] 贺增第[1] 吕秉峰[1] 萧忠良[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《火炸药学报》2007年第2期13-16,共4页Chinese Journal of Explosives & Propellants

摘　　要：利用密闭爆发器试验,研究了管状变燃速发射药的几何尺寸对燃烧性能的影响,将实验与理论Γ-Ψ曲线进行对比。结果表明,管状变燃速药的孔径太大或太小时,都不能获得良好的燃烧渐增性;长径比小于2时对其燃烧渐增性的不利影响比较明显,综合考虑燃烧性能与装填密度,管状变燃速药的长径比取2.5为宜。造成实验与理论Γ-Ψ曲线差异的主要原因在于实验测试中不能满足推导理论公式时所采用的一些假设条件。The effects of physical dimension （inner diameter and length-to-diameter ratio） on the combustion performance of a tubular variable-burning-rate gun propellant were investigated by closed bomb test, The difference between theoretical and experimental Γ-Ψ curves was compared and analyzed, The experimental results show that this gun propellant would not present good progressive combustion performance when its inner diameter is too large or too small. When the length-to-diameter ratio is less than 2, it has an obvious adverse effect on progressive combustion, and the suitable value of length-to-diameter ratio is 2. 5 as considering the comp- rehensive effects of combustion property and packing density. The main reason for the difference between theoretical and experimenta Γ-Ψ curves was that some postulated conditions assumed in the derivation process of theoretical equations can not be met in experimental test.

关 键 词：物理化学 变燃速发射药 燃烧性能 几何尺寸 密闭爆发器试验 

分 类 号：TQ562[化学工程—炸药化工]