单兵弹箭转动惯量的精密测量

A Method to Measure the Rotational Inertia of Small Missiles

阐述了对称式三线摆的结构原理,介绍了微角与大角摆动周期,利用该摆可以测量小型弹箭、炮弹头、飞机模型及其他构件的转动惯量,当 R/L<1/30,(?)≤60°时,该装置的测量准确度优于1%。

The structure and principle of three-lines pendulum are outlined.The calculation methods of its period in small and large angle are presented.The three-line pendulum can be used to measure the rotational inertia of small missiles,missiles warheads,shells,aeroplane model and so on.When R/L<1/30 and≤60°,the measurement accura- cy can be less than 1%.