论文标题
爆炸驱动的发射器，能够10 km/s弹丸速度
An Explosively Driven Launcher Capable of 10 km/s Projectile Velocities
论文作者
论文摘要
对于多个科学领域，向超过10 km/s的速度发射大型（> 1 g）的弹丸对速度很感兴趣，但超出了当前的超速发射器技术的范围。本文报告了爆炸性驱动的轻型气枪的开发，该枪表明能够发射直径8毫米，0.36 g镁弹丸至10.4 km/s。内爆发射器（IDL）使用加压管的线性内爆来将氦气压力降至\ si {5} {\ giga \ pascal}的压力，然后将弹丸扩展到超效率上。通过使用下孔速度测定实验和准中的内部弹道求解器，探索了IDL的发射周期。介绍了8毫米发射器设计的详细概述，重点是由爆炸驱动的推进剂压缩以及由此产生的极端压力和温度引起的独特考虑。高平均驾驶压力导致发射器紧凑，总长度通常小于一米。证明了将设计扩展到较大的弹丸尺寸（直径25毫米）的可能性。最后，通过概念并通过初步实验探索了修改后的发射周期的概念，该概念可以使IDL得以达到更大的弹丸速度。
Launching large (> 1 g) well-characterized projectiles to velocities beyond 10 km/s is of interest for a number of scientific fields but is beyond the reach of current hypervelocity launcher technology. This paper reports the development of an explosively driven light-gas gun that has demonstrated the ability to launch 8 mm diameter, 0.36 g magnesium projectiles to 10.4 km/s. The implosion-driven launcher (IDL) uses the linear implosion of a pressurized tube to shock-compress helium gas to a pressure of \SI{5}{\giga\pascal}, which then expands to propel a projectile to hypervelocity. The launch cycle of the IDL is explored with the use of down-bore velocimetry experiments and a quasi-one-dimensional internal ballistics solver. A detailed overview of the design of the 8 mm launcher is presented, with an emphasis on the unique considerations which arise from the explosively driven propellant compression and the resulting extreme pressures and temperatures. The high average driving pressure results in a launcher that is compact, with a total length typically less than a meter. The possibility to scale the design to larger projectile sizes (25 mm diameter) is demonstrated. Finally, concepts for a modified launch cycle which may allow the IDL to reach significantly greater projectile velocities are explored conceptually and with preliminary experiments.
