FRAGMENTATION AMMUNITION BODY Russian patent published in 1997 - IPC

FIELD: production of ammunition, warheads, hand and rifle grenades, mines, etc. SUBSTANCE: the ammunition body is a multilayer one, the fragmentation inner shell is made of a helical-arranged rod with transverse riffles. The helix flights are axially placed and tightly tightened by a nut. The transverse riffles of the rod in the cylindrical shell form s stepped groove on its generating surface due to the fact that the riffle pitch is not multiple of the shell diameter. To enhance the functional reliability of the device, the relation between the thickness of the external solid and helical shells is selected within 0.45 to 0.60. EFFECT: enhanced reliability. 2 dwg