Analysis of Possibility of Increase in Penetration Depth into Metal Targets of Projectiles with Energy Release Filler

The article provides the analysis of the possibility of increase in projectile penetration depth into metal targets at interaction velocities about 1000 m/s due to placement of reactive material filler in the projectile. The analysis is made on the basis of developed calculation model. We suppose that reactive material chemical transformation happens at a certain stage of penetration with energy release and emergence of strongly compressed gaseous products of reaction. As a result, a back part of the projectile is rejected in the direction opposite to the direction of its movement, and a forward part receives a recoil momentum in the direction of penetration. The force of metal target resistance is calculated with the use of empirical dependence for mechanical stresses on the surface of contact of a projectile head part and a target. Moreover, we accept the assumption that chemical transformation of reactive material happens instantly and products of reaction are ideal gas with adiabatic index k = 3. The article shows that it is possible to hope for the increase in penetration depth in case of prevention of considerable radial expansion of chamber walls with reaction products. For this purpose it is necessary that energy release happened after deepening of chamber with reactive filler in the cavity which is formed in a target lower than the level of a target front surface

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