低温感包覆火药装药的内弹道势平衡理论模拟

摘要

为了进一步研究低温感包覆火药装药的内弹道特征及其内弹道数值计算方法,运用内弹道势平衡理论,对制式装药和低温感包覆火药装药的势平衡点参数进行了比较.分析了低温感包覆火药装药势平衡点处燃去火药相对量ΨE随装填密度变化的原因,并拟合了低温感包覆火药装药的实际燃气生成函数.在此基础上利用势平衡方程对内弹道过程进行了数值模拟.结果表明,计算曲线与实验曲线基本一致,应用内弹道势平衡理论描述低温感包覆火药装药的膛内燃烧规律可行.%In order to study the characteristics and calculation method of interior ballistic with the low temperature sensitivity coated propellant charge, the parameters at the potential equilibrium point with standard charge and the low temperature sensitivity coated propellant charge were compared by the potential equilibrium theory. The reason why ψE (the relative amount of burned propellant) at the potential equilibrium point changed with the charge density was analyzed and the actual burning gas formation function was fitted. The simulation of the interior ballistic was carried out based on the above. The results show that the calculated curve is in good agreement with the experimental curve and the potential equilibrium theory can be used to study the combustion laws of the low temperature sensitivity coated propellant charge.