活性芯体子弹对柴油油箱引燃效应及机理研究

Igniting Effects and Mechanism of Diesel Oil Tank by Projectile with Reactive Core

针对传统惰性子弹对柴油油箱引燃能力不足的问题,提出一种活性材料填充钨合金子弹结构.基于12.7 mm弹道枪,开展了活性芯体子弹对柴油油箱引燃效应实验研究,结合子弹侵彻过程动力学理论分析,得到了弹芯结构、子弹与油箱碰撞位置对引燃效应影响规律,并揭示了活性芯体子弹结构对柴油油箱的引燃机理.研究结果表明,在装填等质量活性材料的情况下,子弹结构活性材料腔长径比越小,子弹实心段长径比越大,活性材料非自持反应释能更完全,燃油流体动压更显著,引燃效率更高;子弹作用油箱位置影响子弹与燃油作用时间,通过影响燃油内流体动压效应及活性材料点火时间,显著影响引燃效率;活性芯体子弹通过动能侵彻流体动压效应及活性材料化学反应释能的双重作用,使其对柴油油箱的引燃效率显著高于传统惰性子弹.

A reactive core filled tungsten alloy projectile structure was proposed to improve the igniting effects of traditional inert projectile on diesel oil tank.With the combination of impacting tests by 12.7 mm caliber ballistic gun and theoretical analysis on the dynamic penetrating process,effects of the projectile structure and impacting position on the tank on the igniting effects were obtained,while the igniting mechanism was revealed.The results indicate that under the condition of filling the same amount of reactive materials,a lower length to diameter ratio of the reactive material cavity and a higher length to diameter ratio of the solid segment result in more complete non self-sustainable reaction of the reactive filling,more prominent hydrodynamic effect,and higher ignition efficiency.By affecting the hydrodynamic effect and igniting duration,impacting positions on the oil tank obviously decide the igniting results.By combining the hydrodynamic effects and chemical energy release,reactive core filled projectile structures demonstrate higher ignition efficiency than traditional inert projectiles.