CASE FOR PROPELLANT CHARGE Russian patent published in 2012 - IPC F42B5/28 

FIELD: weapons and ammunition.

SUBSTANCE: case for propellant charge includes housing, bottom connected radially to housing, nipple, seat for ignition device and a flange. The latter is equipped with a guide made at an angle of 41.0-49.0° to case bottom blade. Bottom-to-housing interface radius is equal to 0.006-0.03 of outer diameter of the housing at the transition point of straight-line generatrix of inner surface of the housing to radius generatrix. Housing wall thickness at the same point is chosen equal to 0.13-0.59 of the bottom-to-housing interface radius.

EFFECT: invention allows creating a case operating at pressure of 500 MPa (5000 kg/cm²) and having the required strength of the housing wall at maximum pressure of power gases in the gun chamber.

6 cl, 2 dwg