摘要
为了解双层变燃速发射药的热膨胀性能规律,采用膨胀系数测定仪测定了一种类双基型中心开孔双层变燃速发射药的线膨胀系数,结果表明,外层药的线膨胀系数大于内层药的线膨胀系数。推导了变燃速药型的轴向线膨胀系数与内、外层药的线膨胀系数以及几何尺寸之间的理论关系式,并计算了变燃速发射药的线膨胀系数,与实测值的相对误差小于10%。
In order to understand the thermal expansion behavior rule of two-layer variable burning-rate gun propellant,the linear expansion coefficients were measured by use of an expansion coefficient determinator for a kind of variable burning-rate gun propellant samples which are analogous to double-base gun propellant and have a central hole and two layers.The results show that the linear expansion coefficient of outer layer is larger than that of inner layer.Aiming to this shape of variable burning-rate gun propellant,the theoretical relationship between linear expansion coefficient in axial direction with the one of inner layer and outer layer material as well as the physical dimension of sample was derived.Applying this relationship to the tested propellant samples,the relative error between calculated linear expansion coefficient and tested value is less than 10%.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2011年第2期80-83,共4页
Chinese Journal of Explosives & Propellants
关键词
材料科学
变燃速发射药
线膨胀系数
几何尺寸
热膨胀
material science
variable burning-rate gun propellant
linear expansion coefficient
physical dimension
thermal expansion
