ROTARY FRAGMENTATION SHELL OF HIGHER EFFICIENCY (VERSIONS) Russian patent published in 2013 - IPC F42B12/20 F42B12/22 F42B12/24 F42B12/32 

FIELD: weapons and ammunition.

SUBSTANCE: rotary fragmentation shell comprises two or several layers of ready fragments or fragment-forming jackets and an explosive charge. In the first version of realisation the border between fragments or a notch on the fragment-forming jacket of the second layer is displaced backwards relative to the rotation direction. In the second version fragments of the first and second layers are pairwise connected to each other with a cog or a key so that fragments of the second layer cover largest part of the fragment between flying fragments of the first layer. In the third version of realisation the fragments of the first and second layers are rigidly connected to form a figure that is Z-shaped figure in the cross section. In the fourth version the end sides of ready fragments or a ring of a fragment-forming jacket are combined into a rabbet or a groove, or rings of the fragment-forming jacket are displaced in longitudinal direction in staggered order. In the fifth version the external surface of the second layer in the cross section has straight or arched slants similar to a double-pitch roof. An angle of bevel relative to a tangent or a radius may vary, and length of two slants may differ. In the sixth version the border of fragments of the second and third layers has a round shape in the cross section. On each ready or future fragment of the second layer there are two fragments of the third layer. Adjacent fragments of the third layer lying above the border of fragments of the second layer are connected with a flexible link - a chain or a cable or a tape.

EFFECT: increased efficiency of a shell.

9 cl, 7 dwg