基于锥膛炮的弹丸弹裙膛内阻力研究

针对锥膛炮炮膛和弹丸的结构特点，分析了锥膛炮直膛段弹丸后弹裙与膛壁之间摩擦阻力的变化过程和锥膛段弹丸弹裙高速冲击锥膛受到的挤压阻力变化过程；建立了弹丸弹裙膛内阻力数学模型；根据所建模型进行了编程计算，得出了弹裙膛内阻力-位移变化曲线、膛压-位移曲线和速度-位移曲线，计算结果与实验结果一致。研究结果可为锥膛炮内弹道设计和弹丸结构优化提供参考。

Research on the Bore Resistance of Projectile Sabots Based on Conic-chamber Gun

The friction between the rear sabot and bore surface in the rectilinear-chamber phase and the impact resistance between the sabots and bore surface during the projectile squashing in the conic-chamber at a high speed in the conic-chamber phase are analyzed.The mathematical models of resistance are set up based on the special structure of conic-chamber gun and projectile.The resistance-length curve,press-length curve,and velocity-length curve are obtained with the mathematical models.And the calculation results are consistent with the experimental results.The research can provide references for the optimization design of conic-chamber gun’s interior ballistics and projectile’s structure.