The ammunition is an important part of weapon equipment system,where the position of the center of mass affects speed and stability of the ammunition;Eccentric position determines orbit of the rocket, and it directly affects the rocket target shooting. These parameters is of great significance. In this paper,based on the original compound pen-dulum theory and structure, further research is conducted, which makes the tedious calculation formula simplified, and is convenient for measurement and calculation. The research provides theoretical basis for compound pendulum measuring method of mass eccentricity.%弹药是武器装备系统中的重要的组成部分,弹药的质心位置会对弹药飞行稳定性和飞行速度产生重要影响;弹药的偏心位置对弹药的飞行轨道有着决定性的作用,偏心将直接影响弹药的目标命中概率,这些静态参数对弹药的性能具有重要意义.基于已有的复摆理论和结构基础对质偏的复摆测量法进行研究,使得质偏的计算更加简便,便于测试和计量,为质偏的测量提供了理论依据.
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