UNMANNED UNDERWATER VEHICLE FOR DEEP-SEA DIVING Russian patent published in 2020 - IPC B63G8/00 

FIELD: shipbuilding.

SUBSTANCE: invention relates to shipbuilding, specifically to unmanned underwater vehicles (sailplane-glider) for investigation of water bodies. Unwatered underwater vehicle for deep-sea diving includes a buoyancy control system divided into two independently operating actuating circuits arranged symmetrically about the centreline of the unmanned underwater vehicle for deep-sea diving. At that buoyancy control system consists of hydraulic cylinders, controlled valves, springs, pistons with rods, working fluid hydraulic pumps arranged in solid housing of unmanned underwater vehicle for deep-sea diving. Rods of pistons enter permeable part of unmanned underwater vehicle for deep-sea diving. Rods of pistons have different length and different volume in the permeable part for displacement of point of application of resultant force of excessive buoyancy relative to diametral plane, with possibility of banking and, accordingly, manoeuvring of unmanned underwater vehicle for deep-water dives along course.

EFFECT: reduced load on hydraulic pumps of working fluid, which provides for change of unavoidable underwater vehicle buoyancy for deep-sea diving at depths over 4000 m and increases its reliability and survivability.

1 cl, 3 dwg