LAUNCHING TUBE WITH AT LEAST ONE SCREW RECTANGULAR GROOVE AND MANDREL TO PRODUCE LAUNCHING TUBE Russian patent published in 2009 - IPC F41F3/00 

FIELD: weapons.

SUBSTANCE: set of invention relates to launching tube incorporated with rocket launchers. Proposed launching tube comprises at least one screw rectangular groove and rocket lock arranged in wedge-like symmetric recess with base on tube rear end face. Side surfaces of the tube form undercuts for dovetail joint with a lock partially fixed by its rear part of tapered mushroom-shaped stops. Lateral surfaces of aforesaid recess are formed by tape with its edge fitted on the tube inner cylindrical surface and inclined along normal to said surface. Helical surface of the tape features reducing inclination angle to said normal from the recess narrow part decreasing aforesaid undercut and transforming the latter into chamfer in the zone of aforesaid mushroom-shaped stops nearby recess base. Said helical surface is located outside the screw line trajectory of the tube rectangular groove helical surface. Mandrel to produce launcher comprises cylindrical casing with at least one screw plate and wedge-like symmetric strip with its base arranged on casing edge. Lateral surfaces of said strip are formed by tape with its edge fitted on the tube inner cylindrical surface and inclined along normal to said surface to form undercut between strip and casing. Helical surface of the tape features reducing inclination angle to said normal from the recess narrow part decreasing aforesaid undercut and transforming the latter into chamfer nearby recess base. Said helical surface is located outside the screw line trajectory of the tube rectangular groove helical surface whereon tube rectangular screw bearing surface is formed.

EFFECT: higher reliability and ease of manufacture.

2 cl, 12 dwg