Re:Classified specs leaked on War Thunder forum for third time
by snowycat on Friday June 03, 2022 @11:25PM
(#31616673)
In the diagram behind the tungsten penetrator, only the part of the penetrator that contacts the sabot has rings on it, while the rest of the projectile is drawn as smooth. The rings might have something to do with helping the sabot separate from the projectile correctly or preventing the projectile from slipping out of the sabot before it leaves the barrel.
It makes sense that a penetrator would use that technique as it's designed to clear the chip debris, as opposed to trying to deform the bulk hardened material, allowing far easier penetration and perhaps more energy transfer to the inside of the target.
https://www.iqsdirectory.com/articles/broaching.html