METHOD FOR USING UNHABITED UNDERWATER UNIT UNDER ICE Russian patent published in 2021 - IPC B63G5/00 B63G6/00 B63G9/00 B63G13/00 

FIELD: marine technology.

SUBSTANCE: invention relates to marine technology and serves for its use in the open sea in ice conditions. For the use of an unmanned underwater vehicle under the ice, it is possible to check the operability of its on-board control system, enter the program and the route of movement into it, launch the underwater vehicle from the carrier and move along a given route. Before the launch of an unmanned underwater vehicle, ice reconnaissance is carried out by the carrier itself or the aircraft, a wormwood is found in the ice field within the range of the uninhabited underwater vehicle, or in its absence, the ice team creates a wormwood, fixes its coordinates, drops a floating navigation buoy into the wormwood, program signals which indicate the location of the polynya. The coordinates of the ice hole and the characteristics of the signals of the navigation buoy are entered into the on-board control system of the unmanned underwater vehicle. After the unmanned underwater vehicle completes the task, it is directed at an economical course to the area of the ice hole with the given coordinates, the software signals of the floating navigation buoy are detected, the underwater vehicle is aimed at the buoy, the depth is reduced, the echometer is turned on and the ice thickness is measured with it. When an unmanned underwater vehicle approaches a buoy and detects the absence of ice or ice of a given thickness on the water surface, which ensures its destruction when the underwater vehicle emerges, positive buoyancy of the underwater vehicle is created by blowing the ballast compartment or inflating the float, the unmanned underwater vehicle ascends into a hole on the water surface, after which they transmit a signal about this to the control point.

EFFECT: extracting the underwater vehicle from under the ice and lifting it to the surface.

1 cl, 3 dwg