METHOD OF REMOVAL OF POWDER GASES FROM ARTILLERY GUN BARREL AND FIXED SHOT FOR ITS REALIZATION Russian patent published in 1997 - IPC

FIELD: development of means providing for medical and engineering requirements in mobile and stationary objects shooting from which is conducted by the combat crew in the conditions of a limited space, for instance tank or ship gun mount. SUBSTANCE: the method consists in purging of the bore by compressed gas fed from the source located in the case. Before the compressed gas is fed to the bore it is heated to the pressure differential of compressed gas determined by relation $$$, where Psq - compressed gas pressure in the source before the beginning of purging; Phg - heated compressed gas pressure in the bore before the beginning of purging. The fixed shot has a shell flared in the case that accommodates the powder charge. The bore purging system is made in the form of tubular vessels uniformly spaced in circumference between the shell body and case walls among the powder charge tubes and hinge-joined to the case bottom against additionally provided afterburner. The tubular vessels break-down assembly is made in the form of a piston, whose front part forms a blade in the form of two successively arranged wedges. The angle of the front wedge exceeds the angle of the rear wedge. The piston rear end face is coated with heat-insulating material and tightened to the vessel member to be cut by a spring. EFFECT: facilitated procedure. 2 cl, 3 dwg