作为未来化战争条件下打击地下深层战略目标的一种重要武器装备，“上帝之杖”天基动能武器对维护国家利益和领土完整意义重大。首先，综合考虑了外界温度、压强、海拔高度、大气密度、飞行速度等因素对弹体在大气层中所受空气阻力的影响，分析计算出“上帝之杖”动能弹的入地速度达3401.7m/s。目前，受到实验技术和方法的限制，只有Gold取得了几组动能弹高速侵彻混凝土靶的实验数据，且最高侵彻速度不足2km/s，对诸如“上帝之杖”这么高侵彻速度的动能弹侵彻混凝土靶的实验研究还是空白。因此，进行了“上帝之杖”动能弹侵彻C60半无限混凝土靶的数值模拟和理论研究。研究结果表明：数值模拟所得的最终侵彻深度(18.9m)与理论计算结果(17.3m)的误差在允许的范围内，混凝土靶的最终开坑直径达7.333倍弹径；不同于刚性弹侵彻过程中侵彻速度持续衰减的特点，“上帝之杖”超高速动能弹侵彻的瞬态高压阶段弹头侵彻速度锐减，动能损失率极高，相应侵彻深度小；稳定侵彻阶段弹头侵彻速度和弹长消蚀速度保持稳定，弹体动能损失率基本不变，侵彻深度却线性增加；当动能弹着靶速度足够大时，最终侵彻深度主要受弹靶材料密度控制，受弹靶强度影响不大，高密度分层防护结构在抗超高速动能弹侵彻领域优势显著。
Abstract
In the future war, “gold stick” space-based kinetic energy weapons plays an important role in attacking deep underground targets, and it is also significant for safeguarding national interests and territorial integrity. First, considering the impact of outside temperature, pressure, altitude, atmospheric density, flight speed and other factors on the air friction, this paper analyzed that the “god stick” kinetic energy projectile’s speed would arrive 3401.7m/s. Currently, limited by experimental techniques and methods, only Gold achieved a few groups of experimental datas,of high-speed kinetic energy projectile penetrating into concrete targets, and the highest penetration velocity is less than 2km / s, such as "God stick" ultra-high-speed kinetic energy projectile penetrating into concrete targets’ experimental study is still blank. Therefore, the article completed theory and numerical simulation analysis of “god stick” penetrating a semi-infinite concrete targets. The result shows that: the final penetration depth obtained by numerical simulation(18.9m) agrees well with the theoretical results(17.3m), the finally crater diameter of concrete targets reaches 7.333 times of the diameter of bomb; comparing with the continue declined velocity of rigid projectile, during the process of “god stick” hypervelocity penetration , transient high pressure phase has quickly dropped velocity of warhead, high kinetic energy loss rate, small corresponding penetration depth, stable penetration stage has stable warhead speed, stable rod length maceration, basically unchanged kinetic energy loss rate, and linearly increasing depth of penetration. When the impact speed of projectile arrives large enough, the final penetration depth is mainly affected by the density of projectile and target materials, not by the strength. So the high-density stratification protective structure has great advantages in anti-hypervelocity penetration areas.
关键词
&ldquo /
上帝之杖&rdquo /
；超高速侵彻；混凝土
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Key words
“god stick” /
hypervelocity penetration /
concrete
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