火炮装药内弹道性能次要功计算系数测试方法

Measurement Method of Subordinate Work Calculation Coefficient for Interior Ballistic Performance of Gun Propellant Charge

提出了一种基于多普勒原理的弹丸膛内运动微波干涉测试系统和多点压力同步测试技术的火炮装药内弹道性能次要功计算系数测试方法。该方法可以有效获得涵盖弹丸整个膛内运动过程的装药内弹道性能次要功计算系数,为发射装药内弹道性能预估提供可靠的计算参数。采用微波干涉仪、压电压力测试系统、30 mm火炮对建立的次要功计算系数测试方法进行了试验研究。结果表明:在弹丸膛内运动过程中,次要功计算系数随着弹丸速度的增加而逐渐减小并趋于一个定值;在进行装药内弹道性能预估计算时,次要功计算系数需根据弹丸速度进行分段取值,以提高预估计算精度。

A testing method was founded by the microwave interferometer measurement system of the projectile motion based on the Doppler principle and the multi-points pressure synchronous test technology of the gun’s interior ballistic performance.The method can obtain the subordinate work calculation coefficient of the gun,which covers the whole process of the projectile motion in the chamber.And the method provides a reliable basic calculation parameter for the estimation of the interior ballistic performance.The experiment was done to test the subordinate work calculation coefficient using microwave interferometer,pressure testing system with piezoelectricity sensors and 30 mm artillery.The results show that the subordinate work calculation coefficient is a set of changing values,which decreases with the increase of the projectile velocity and gradually approaches a fixed value.In the process of predicting the interior ballistic performance of gun propellant charge,the subordinate work calculation coefficient should be evaluated in sections according to the projectile velocity to improve the calculation accuracy of the interior ballistic performance parameters.