Calculations for Penetration Model - Rathcoombe

Hydrodynamic flow conditions cease at this velocity threshold, when the penetration velocity equals the velocity of the rear portion of the projectile. Note that the following relation is only valid where the strength of the projectile is greater than that of the target. vHT = [ 2 (σp – σt ) / ρT ]1/2 where, σp is projectile yield ... ................
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