破碎发射药等效形状函数的确定方法  

Determination Method for Equivalent Shape Functions of Fractured Propellants

作　　者：陈琪[1] 杨富锋[1] 芮筱亭[1] 王燕[1] 

机构地区：[1]南京理工大学发射动力学研究所,南京210094

出　　处：《兵器装备工程学报》2016年第12期45-47,共3页Journal of Ordnance Equipment Engineering

基　　金：中国工程物理研究院基金项目(RMC2015B05)

摘　　要：为了准确表征破碎发射药在火炮膛内的燃气生成规律,提出了确定破碎发射药的等效形状函数的方法。通过密闭爆发器试验模拟不同破碎程度发射药在真实的膛内环境下膛压与时间的变化关系,得到破碎发射药等效形状函数,并定性分析了其与起始动态活度比的关系。该方法所得的等效形状函数能体现破碎发射药的燃烧特性,为考虑破碎的两相流内弹道研究提供了一种新方法。In order to accurately describe gas generation rule of the fractured propellant, a new method of determining the equivalent shape functions was presented. The propellant grains with different fracture degree were tested in closed bomb for the correspondence relationship between chamber pressure and time. The equivalent shape functions were derived. The relation between the equivalent shape functions and the initial dynamic vivacity ratios was analyzed. The result shows that the equivalent shape functions based on the method can characterize the fractured propellant. The study provides a new method for the dynamics of the two-phase flow in interior ballistic.

关 键 词：破碎发射药 形状函数 密闭爆发器 起始动态活度比 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]