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聚能装药射流之所以能获得很大的延伸是由于射流体的外部和内部存在着内部速度差所致。只要这个速度差存在，射流就可以稳定延伸。这个稳定过程一直持续到贮存于射流内因速度差而产生的动能由于相邻流层间的内摩擦而全部消耗尽为止。这过个程也可从回收的聚能装药射流粒子中观测到的空穴中看出。
The reason why the convergent charge jet obtains a large extension is due to the difference in internal speed between the exterior and the interior of the jet. As long as the speed difference exists, the jet can be extended steadily. This stabilization process continues until the kinetic energy stored in the jet due to speed differences is depleted due to internal friction between adjacent flow layers. This pass can also be seen in the holes observed in the collected shaped charge jet particles.