The slotted cartridge is able to generate strong directional penetration. To study the effect of different structures of slotted cartridges on the propagation characteristics of shock waves and explosive products, the high-speed schlieren photography system and pressure testing system were used to conduct experimental investigations based on five different structures of slotted cartridges. Experimental results show that shock waves and explosive products preferentially propagate outward from the slit and the propagation process is highly symmetrical. The peak overpressure generated by the three-seam slotted cartridge is 1.4 MPa, which is much greater than that of other design schemes. Besides, the greatest propagation velocities of shock waves and explosive products were achieved for the three-seam slotted cartridge. The disturbance of adjacent shock waves generates jet-like explosive products in front of the shock waves. Numerical simulations reveal that there are two rising phases of overpressure at the slotted position, which is mainly caused by air disturbance in the slit and shock wave reflection in the slotted tube. The three-seam slotted cartridge achieves the maximum overpressure of 225 MPa at the slotted position. When the shock waves and explosive products propagate outward the slotted cartridge with large internal incision, the overpressure and velocities of shock waves and explosive products gradually increase with decrease in the cross-sectional area of the slotted tube.

开槽弹药筒能够产生强大的定向穿透。为研究不同结构的开槽弹药筒对冲击波和爆炸物传播特性的影响，利用高速纹影照相系统和压力测试系统对五种不同结构的开槽弹药筒进行了实验研究。实验结果表明，冲击波和爆炸物优先从狭缝向外传播，传播过程高度对称。三缝开槽滤芯产生的峰值超压为1.4 MPa，远大于其他设计方案。此外，三缝开槽弹药筒实现了冲击波和爆炸物的最大传播速度。相邻激波的扰动在激波前产生喷射状的爆炸物。数值模拟表明，开缝处存在两个上升阶段的超压，主要是由开缝内的空气扰动和开缝管内的激波反射引起的。三缝开槽筒在开槽位置实现了 225 MPa 的最大超压。当冲击波和爆炸物向外传播时，随着开槽管截面积的减小，冲击波和爆炸物的超压和速度逐渐增加。这主要是由狭缝中的空气扰动和开槽管中的激波反射引起的。三缝开槽筒在开槽位置实现了 225 MPa 的最大超压。当冲击波和爆炸物向外传播时，随着开槽管截面积的减小，冲击波和爆炸物的超压和速度逐渐增加。这主要是由狭缝中的空气扰动和开槽管中的激波反射引起的。三缝开槽筒在开槽位置实现了 225 MPa 的最大超压。当冲击波和爆炸物向外传播时，随着开槽管截面积的减小，冲击波和爆炸物的超压和速度逐渐增大。