METHOD FOR LAUNCH OF UNDERWATER VEHICLE AND IMMERSION GRATE FOR ITS REALIZATION Russian patent published in 2003 - IPC

FIELD: applied hydromechanics, in particular, unsteady hydrodynamic interaction of the components of the energopropulsive complex of underwater vehicles, applicable for practical estimation and optimization of the launch characteristics of the energo-propulsive complexes of the underwater vehicle. SUBSTANCE: after the start of the engine at a launch of the underwater vehicle the body of the vehicle is kept in the initial position from longitudinal movement by the grate cross-piece and the cross-piece is released by an explosive charge after the engine-propeller complex has picked up a rotational speed equal to a quarter and more of the rated value. An additional cross- piece-bar with a pair of holes is installed on the immersion grate. The axle of rotation of the bar relative to the grate body is installed in one of the holes. In the other-axle-pin coupled to a movable piston hermetically sealed in the body fastened on the immersion grate. The cross-piece-bar is installed on the cut of the pylon of the underwater vehicle, and the sealed body is provided with an explosive charge and a cable for transmission of the blast signal. EFFECT: reduced launch dynamic load on the components of the propulsive complex of the underwater vehicle and enhanced stability of the launch. 2 cl, 2 dwg