测量弹丸在炮管中的运动速度是研究发射药内弹道效率的重要手段;是炮、弹设计所关心的重要问题之一。弹丸在炮管内经过发射,其速度从零到出炮口时每秒1千多米,速度变化大,在几毫秒内完成此过程。因为弹丸在炮管内运动,直接观察、测量是较困难的。 Measuring the velocity of the projectile in the barrel is an important means to study the internal ballistic efficiency of the projectile. It is also one of the important issues concerned with the artillery and projectile design. Projectile fired in the barrel after its speed from zero to a muzzle more than 1 thousand meters per second, speed changes, in a few milliseconds to complete this process. Because the projectile in the barrel movement, direct observation, measurement is more difficult.