单基硝酸铵发射药的炮口焰研究

The Study of Muzzle Flash of the Single AN Gun Propellants

为研究硝酸铵发射药对火炮炮口焰的影响,采用吉布斯最小自由能法计算发射药燃烧的气体组成,通过密闭爆发器-气相色谱法分析燃气的组成与含量,并用高速摄影仪进行炮口焰拍摄,分析炮口焰面积、炮口焰最大直径、炮口焰平均直径、积分光密度的变化。研究结果表明:在发射药中加入硝酸铵,可以增加氧平衡,明显降低燃烧产物中可燃气体含量;与制式发射药相比,混合发射药的炮口焰面积、炮口焰最大直径、炮口焰平均直径、积分光密度都减小。

In order to study the impact of ammonium nitrate propellant on muzzle flash of 30mm cannon, the gas composition of burned gun propellants were calculated with the minimum Gibbs free energy method, and the closed bomb for propellant, as well as the gas chromatography were used to analyze the composition and content of gas. The photographs of muzzle flash were taken by high speed camera, then the area, the maximum diameter, the average diameter and the integral optical density of the photographs were used to characterize the muzzle flash. The experimental results show that adding ammonium nitrate in gun propellant can increase the oxygen balance, the combustible gas content is reduced and the characters of muzzle flash is lower than that of service propellant.