PROGRESSIVE PROJECTILE WITH HIGH CHARGE DENSITY Russian patent published in 2009 - IPC C06B21/00 

FIELD: explosives.

SUBSTANCE: in charge they combine at least two radially perforated tubes of projectile explosive which are installed fully inside each other or one after another and which have combustion or ignition channels arranged at distance of e-size selected according to actual type of projectile and its combustion characteristics. Channels have circular external and internal boundary surfaces, in which before charge initiation at least one of projectile explosive tube external surfaces total number available for initiation, is processed for initiation by means of surface treatment or application of surface coating intended for retardation of ignition spread on this surface so that combustion of projectile explosive tubes is partially mutually blocked.

EFFECT: pressure of projectile gas increases behind projectile, pressure in process of projectile passing in barrel lies near to applicable size of barrel maximum working pressure.

21 cl, 8 dwg