多层发射药内弹道模型及数值求解  

The Interior Ballistic Model and Numerical Simulation of Multilayer Gun Propellant Charge

作　　者：张江波[1] 张玉成[1] 蒋树君[1] 余斌[1] 杨雁[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2009年第3期83-86,共4页Chinese Journal of Explosives & Propellants

摘　　要：基于经典内弹道理论建立了多层发射药的内弹道模型,用MATLAB编写了计算程序,以59式100mm高炮发射装药为基础进行了数值模拟。计算结果表明,在假定各层发射药为双芳-3、单基药、高能硝胺药、双迫药,发射药层数由1层依次增加到4层时,初速分别增加了3%、3.63%、3.69%;当燃烧层的燃速比为1∶1.4∶1.8∶2.2,燃烧层的厚度比为5.5∶1.5∶1∶2时,最大膛压为306.4 MPa,初速为932.4m/s,此时初速增加3.69%,且最大膛压未变,压力平台效果明显。从内弹道过程和工艺技术的可行性方面考虑,多层发射药采取3层即可达到较好的效果;对于多层发射药,当武器选定后,最优化的燃烧层厚度比和燃烧层燃速比存在唯一确定的关系,此时,在保持最大膛压不变的情况下,初速增加最多。The interior ballistic mathematics model of multilayer propellant charge was established based on the classical interior ballistic theory and the interior ballistic process of 59 model 100mm gun was calculated with the simulating program compiled by MATLAB. The calculated results indicate that on the assumption that each layer charge with propellant SF-3, propellant D, propellant GN, propellant SD, when the layers of multilayer charge from one to four, the muzzle velocity increas 3%, 3.63%, 3.69; when the ratio of each layer burning rate is 1 ： 1.4 ： 1.8 ： 2.2, the ratio of each layer thickness is 5.5 ： 1.5 ： 1 ： 2, the max pressure is 306.4MPa, the muzzle velocity is 932.4m/s, then the muzzle velocity increasing 3.69% and keeping the max pressure invariable, it is in evidence that the pressure platform effect. Considering the interior ballistic and the feasibility on the technique, it is very effective that adopting three layers on the multilayer charge. For multilayer charge, with a certain weapon, there is only one relation between the ratio of each layer burning rate and the ratio of each layer thickness, the keeping invariable max pressure and the most muzzle velocity increasing.

关 键 词：内弹道 多层发射药 数值求解 压力平台 炮口初速 

分 类 号：TQ560.71[化学工程—炸药化工] TQ562