一种带中心孔的密实随行装药内弹道数值计算及分析

目的 推进密实随行装药技术工程化应用的进程,提出一种带中心孔的密实随行装药结构方案.方法 针对该方案建立相应的内弹道模型,计算得到不同装药量、不同点火延迟时间条件下随行装药内弹道性能的变化情况.结果 受燃尽性约束,端面燃烧型随行装药药柱设计高度有限,内弹道性能提升较小.在随行药柱燃速不变的条件下,带中心孔的随行装药可有...

Numerical Calculation and Analysis on Interior Ballistics of Compacted Traveling Charge with a Central Hole

In order to promote the engineering application of compacted traveling charge technology, a structured scheme of compacted traveling charge with the central hole was proposed. The corresponding interior ballistic model was established for the scheme, and the variation of the interior ballistic performance of the traveling charge under different charges and different ignition delay time was calculated. The calculation results show that the design height of the end-face combustion traveling charge is limited subject to the flammability constraint, and the interior ballistic performance is improved little. Under the condition of the constant burning rate of the traveling charge, the traveling charge with the central hole can effectively increase the traveling charge mass and thus significantly improve the interior ballistic performance. The control accuracy of the ignition delay time of traveling charge with center hole should be 0.01 ms, which requires high design and machining precision of slow combustion coating layer. The research can guide the design of the delay ignition mechanism of the traveling charge with the coating layer based on slow combustion materials.