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弹丸在膛内攻角的变化及其影响因素是发射动力学研究的重要内容，而测量弹丸攻角变化是实现此项研究的前提．最近研究成功的一种专门测量弹丸膛内运动姿态变化的实时测量系统，其构成及测量原理做了介绍，该系统在保证有足够量程的前提下，具有测角灵敏度的高精度和高采样频率，并实现了实时测量．最后提供了实弹射击试验和由此得出的弹丸膛内运动攻角变化曲线和炮管振动曲线．
The change of the angle of attack of the projectile in the bore and its influencing factors are the important contents of the launching kinetics. The measurement of the angle of attack of the projectile is the premise of this research. Recently, a kind of real-time measurement system which has been successfully researched to measure the change of the attitude of the projectile in the borehole has been introduced. Its constitution and measurement principle are introduced. The system has the advantages of high precision and high sampling frequency , And real-time measurement. Finally, the live-fire test and the angle-of-attack curve inside the projectile bore and the gun barrel vibration curve are provided.