METHOD TO FORCE ICE FIELD BY SURFACING UNDERWATER OBJECT AND ICE FIELD FORCING DEVICE Russian patent published in 2017 - IPC B63G8/00 B63B35/08 

FIELD: transportation; shipbuilding.

SUBSTANCE: buoyancy tanks are installed on an underwater object, which are proactively released at flexible joints in process of underwater object surfacing until collision with ice. Each buoyancy tank has a streamlined body divided into a ballast reservoir and a charged compartment with explosive. Prior to release of the buoyancy tank, compressed air is supplied into its ballast reservoir, each flexible joint is released to provide for surfacing of each buoyancy tank. Ratios of weights and volumes of the buoyancy tank are set so that in process of surfacing the flexible joints remain tightened, and the buoyancy tank keeps floating stability while surfacing. Upon impact contact of each buoyancy tank with the lower surface of the ice field, the fuzes are initiated, and the buoyancy tanks are exploded. Depending on the trim difference value of the surfacing underwater object, the sequence of buoyancy tank explosions is set. Explosions are carried out until a lane of water in a field of ice is formed.

EFFECT: increased efficiency and safety of ice field forcing with an underwater object.

3 cl, 6 dwg