Interior ballistics of a two-stage light gas gun using velocity interferometry
Interior ballistics of a two-stage light gas gun using velocity interferometry
复制标题
使用速度干涉测量法的两级轻气枪的内部弹道
作者：
D. Munson;R. May
对二级轻气炮进行了广泛的内弹道学研究，详细测量了弹丸速度随时间的连续变化。两级炮包括一个88.9毫米内径。泵级和28.6 mm内径发射阶段。在这项研究中，枪的操作，推进剂质量，活塞质量，泵气体，泵气体压力，和弹丸质量的五个主要参数变化。射弹速度是使用非常精确的速度干涉仪为任何反射面（VISAR）技术测量的。测量结果表明，由于爆破隔膜破裂时作用在弹丸上的压力的冲击性质，弹丸的初始加速度是不连续的。通过简单的激波管理论，很容易理解这些激波加速度。9张图，3张表。
An extensive interior ballistics study of a two-stage light gas gun was performed which resulted in a detailed measurement of the projectile velocity as a continuous function of time. The two-stage gun consisted of a 88.9-mm i.d. pump stage and a 28.6-mm i.d. launch stage. Five main parameters of gun operation, propellant mass, piston mass, pump gas, pump gas pressure, and projectile mass were varied in this study. Projectile velocities were measured using a very precise velocity interferometer for any reflecting surface (VISAR) technique. The measurements showed that the initial acceleration of the projectile is discontinuous due to the shock nature of the applied pressure on the projectile upon rupture of the burst diaphragm. These shock accelerations are understood easily via simple shock-tube theory. 9 figures, 3 tables.