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The Round

The APDSFS ammunition is the main ammunition of modern tanks. It does't contain explosives and uses the high impact velocity to penetrate the target. APDSFS stands for Armor Piercing Discarding Sabot Fin Stabilized. A cylindrical rod - preferably made of a heavy metal like tungsten or depleted uranium - is the heart of the cartridge. This rod penetrates the target material only due to the very high kinetic energy. The hollow space between the gun barrel and the penetrator is filled out with a sabot which transfers the pressure of the propellant gases to the penetrator. The high velocity causes a very flat trajectory with a short flight time and a good accuracy performance.

 

 

Photo on the left side:

Cutaway of a 105 mm APDSFS-T with a brass cartridge case
 
   
   © 2016 by Willi Odermatt