Overview

High explosive anti-tank warheads are made of an explosive shaped charge that uses the Neumann effect to create a very high-velocity jet of metal in a state of superplasticity that can punch through solid armor.The jet moves at hypersonic speeds (up to 25 times the speed of sound) in solid material and therefore erodes exclusively in the contact area of jet and armor material. Spacing is critical, as the jet disintegrates and disperses after a relatively short distance, usually well under 2 metres. The jet material is formed by a cone of metal foil lining, usually copper, though tin foil was commonly used during the Second World War.

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