SPHERICAL MODERATED POWDER FOR AUTOMATIC WEAPON AND RIFLE CARTRIDGES Russian patent published in 2017 - IPC C06B25/24 F42B5/16 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to spherical double-base moderated powder for small arm cartridges, namely automatic weapon and rifle cartridges of caliber from 5.45 to 12.7 mm. The powder consists of spheroidal granules with a phlegmatized surface layer and contains an energy base - nitrocellulose and nitroglycerin, a phlegmatizer-centralite No. 1, dibutyl phthalate and/or dioctyl phthalate, and/or diethyl hexyl phthalate and/or triethylene glycol dimethacrylate and/or oligoester acrylate, a solvent - ethyl acetate, stabilizator of chemical resistance - diphenylamine and water at a certain ratio of components. Wherein the thickness of the phlegmatized surface layer is 15.5-30% of the thickness of the combustible arch. The ratio of the diameter of the powder granule to the thickness of the combustible arch is from 1.0 to 2.05. The density of loading the cartridge with spherical moderated powder is from 0.85 to 1.15 g/cm³.

EFFECT: increased speed of the bullet without increasing the maximum pressure of the powder gases.

3 cl, 1 dwg, 4 tbl