"SUBCALIBER BUTTERFLY" BULLET AND CARTRIDGE FOR SMOOTHBORE WEAPON Russian patent published in 2012 - IPC F42B30/02 F42B14/06 F42B7/10 

FIELD: weapons and ammunition.

SUBSTANCE: subcaliber bullet is arranged as solid from a plastic material by pressing or casting in the form of a subcaliber finned solid of revolution having stepped-spindle shape, where a head part is cylindrical with a semi-spherical blunted head part. A tail part of the bullet comprises a stabiliser, having a central rod with a back cone adjoining the end thrust of the bullet body in a stepped manner, and at least three finning blades. A cartridge comprises a case, an ignition agent, a powder charge and a missile comprising a subcaliber bullet and a pulling tray consisting of sector elements detached upon exit from a barrel and made of a polymer material. Sector elements with their inner surface follow the contours of the external surface of the bullet from the base of the hemispherical head fairing to the point of coupling between the back cone of the tail part with the cylindrical part of the central rod of the bullet stabiliser. On the external surface the sector elements are equipped with a guide, an alignment and an obturating belts separated from each other by compensation grooves.

EFFECT: higher accuracy of fire.

2 cl, 2 dwg