内爆驱动式超高速发射技术的初步研究

为获得10 km/s左右的超高速发射能力,以内爆发射器为研究对象,利用AUTODYN 2D软件对口径为8 mm的内爆发射器进行有限元仿真分析,获得了典型状态下的弹丸发射速度。研制了口径为8 mm的内爆发射器,并在压缩管中填充5 MPa氦气进行实验,分别获得了0.55 g铝合金弹丸7.95 km/s和0.37 g镁合金弹丸10.28 km/s的发射速度,与有限元仿真计算结果的速度偏差分别为15.3%和3.7%。结果表明,设计的内爆发射器具备10 km/s发射能力,满足空间碎片撞击和防护研究的超高速发射需求。

Preliminary Simulation and Experimental Study on Implosion-Driven Hypervelocity Launching Technology

For achieving the hypervelocity launching of about 10 km/s,an implosion-driven launcher with the caliber of 8 mm diameter was analyzed using the AUTODYN 2 D software.The projectile launching velocities under typical operation condition were obtained.Based on numerical simulation results,several tests of the implosion-driven launcher with the caliber of 8 mm diameter were carried out.The driven gas of helium with the pressure of 5 MPa was filled in the compressed pipe.The experimental results show that the0.55 g aluminum and 0.37 g magnesium projectiles could be launched to the velocity of 7.95 km/s and10.28 km/s,respectively,and the relative deviations between the numerical and experimental results are15.3% and 3.7%,respectively.Consequently,the designed implosion-driven launcher can realize the launching of the projectiles to 10 km/s or even higher which could provide a new ground-test method for investigating the impact features of orbital debris and corresponding shield technologies.