一种随行装药定容燃烧性能研究

为了在静态环境下模拟某新型随行装药的内弹道燃烧性能,采用将小粒发射药进行钢筒中压制成型,端面封堵延时处理的方法得到了一种新型随行装药试样。并将制得的随行药与单樟6/7混合进行密闭爆发器实验,测试了其燃烧性能。实验结果表明:与单樟6/7单独装药相比,其燃烧过程分为2个阶段,且第二阶段燃烧速率远大于第一阶段,通过延迟装置质量和装药密度的调节可以实现对随行药点火延迟时间的控制。随行药具有很高的燃速和较强的燃烧渐增性,在内弹道过程中可有效改善膛内压力分布。

A Study on Combustion Performance With Constant Volume of a Traveling Charge

In order to simulate interior ballistic combustion performance under the static environment,a new traveling charge sample was made by the method that small size globular propellants were compacted in the steel cylinder,and the delay device was tightly bonded on the end surface.Combustion performance was tested by the way of mixed charge of the traveling charge and the single base coated propellant with camphor(6/7) in closed bomb.The experiment results show that compared with the charge of single base coated propellant with camphor(6/7),the combustion process of the mixed charge propellants can be divided into two stages,and the combustion speed of the second stage is highly faster than that of the first stage.The ignition delay time of the traveling charge propellants can be well controlled by the density of the traveling charge propellants and the quality of the delay device.The traveling charge possesses high combustion speed and good burning progression.Pressure distribution can be improved effectively in the interior ballistic process.