
414 Ballistics: Theory and Design of Guns and Ammunition
This model is much simpler than others and provides reasonable results. Unfortunately,
it still has to be coded into a computer to solve the equations simultaneously (and as the
penetrator moves into the backing plate, sequentially). It is nice because it can account for
obliquity. If one generally has to get more detailed than this, direct numerical simulation
is probably the best approach.
We have presented some analytic equations for the penetration of ceramic armor by pro-
jectiles. Ceramics are nearly always used with some type of backing plate. These models,
though fairly complica