加速老化作用下发射药的内弹道性能研究

Study of interior ballistics property of propellant under accelerated ageing

为研究发射药内弹道性能随着储存时间增长的变化,通过高温加速老化试验的方法模拟得到不同储存时间的发射药。利用密闭爆发器装置对不同老化时间下的11/7发射药、7/14发射药的内弹道参数进行测试,得到发射药燃烧过程中压强随时间以及燃速随压强的变化过程。试验结果表明随着老化时间的增长,发射药的最大膛压越高;发射药老化时间越长,在相同的压强下发射药燃速越大。但是不同老化时间发射药的最大膛压值及燃烧值相差幅度不大。

In order to study the interior ballistics properties changing of propellants as the storage time goes, the propellants are attained by high temperature accelerated ageing tests. Interior ballistics properties of 11/7 and 7/14 propellants are tested by manometric bomb under different storage time, the pressure via time and burning rate via pressure changing procedure are got. The test results show that the value of max pressure and burning rating under same pressure increase as the storing times goes, but increment amplitude is small.