Summary and Info
Today's weapons employ compact fragments as well as long rods and shaped)charge jets. Fromthe viewpoint of an armor designer, it is desirable to have a method of dealing with allthree types of penetrator both in theory and in practice,This report presents an equation of motion which in its most general form describespenetration by a forming, stretching, eroding jet. In various specialized forms, itdescribes penetration by pre-formed rods and compact projectiles. One specialized formreduces to the classical jet penetration formula according to which penetration in a se,ni-infinite target is proportional to the square root of the ratio of the jet and targetdensities. A correction for target hardness is automatically included. The solutions ofthe various forms of the equation of motion are given explicitly in closed form and areprofusely illustrated by numerical examples and comparisons with experimental data.
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