POWER UNIT OF RECOILLES ROCKET LAUNCHER AND GAS-DYNAMIC BREECHBLOCK Russian patent published in 2000 - IPC

FIELD: military equipment. SUBSTANCE: the power unit has a combustion chamber formed by the body with the front throttling orifice and the rear nozzle unit, located between which is a tubular powder charge and an igniter, pressure regulator. Axially located is a perforated gas conduit passing through the powder charge and connecting the igniter interior to the front throttling orifice. The flow area between the igniter wall and the inlet end of the pressure regulator makes up at least 1.5 of the total area of all orifices of the pressure regulator positioned in concentric circles n around the central orifice with an area of 0.05 to 0.1 of the total area of all orifices, and the area of each hole makes up [0.8-(n-1)x0.1] of the area of the central orifice. The gas-dynamic breechblock is formed by an annular groove on a plastic band reinforced by the edges by steel rings, whose outside diameter exceeds the groove diameter, and the radial throttling orifice is reinforced by a steel bush. EFFECT: enhanced accuracy of fire of recoilless rocket launcher due to enhanced dynamic balance of the power unit. 2 cl, 3 dwg