摘要
为实现固体随行装药的随行效果,设计了一种新型固体随行装药试验弹,对不同发射药进行了密闭爆发器试验,并开展了30mm火炮内弹道试验,分析了不同点火延迟机构的点火延迟效果。试验结果表明:RGD7-4/7发射药和2/1樟燃速相比5/7和4/7单基药更符合随行装药的速燃性要求,主装药采用5/7或4/7单基药装药,随行药室采用RGD7-4/7和2/1樟发射药,通过点火延迟机构控制合适的时间点燃随行药,可实现膛压P——t曲线压力平台;与常规装药对比,在膛压300MPa基本不变条件下,初速最高提高4.25%,表现出良好的随行效果。
In order to realize the traveling effects in the process of gun firing, a new solid traveling charge of 30 mm gun was designed, and the static combustion performance of the different kinds of propellants were contrasted by the closed bomb test, as well as the effect of the ignition delay and the interior ballistic conditions were tested by 30 mm gun experiment. The experimental results show that, RGD7-4/7 high-energy nitramine and 2/1 single based propellant have the characteristic of higher initial burning rate, compared to that of the 5/7 and 4/7 propellant, so the 5/7 and 4/7 single based propellant are used as its main charge, and the RGD7-4/7 and 2/1 gun propellant are used as its traveling charge. The method of the ignition delay ensured that traveling charge is ignited at the appropriate ignition lag time, which obtained a pressure platform in chamber pressure——time curves. The muzzle velocity of the traveling charge can be increased 4.25% compared to the blank charge（i.e. main charge only, no additional charge）, under the condition of keeping the maximum pressure 300 MPa, which shows the good traveling effect.
出处
《火工品》
CAS
CSCD
北大核心
2016年第1期49-52,共4页
Initiators & Pyrotechnics
关键词
固体随行装药
内弹道
点火延迟
初速
Solid traveling charge
Interior ballistic
Ignition delay
Muzzle velocity
