DEVICE FOR BREAKING DOWN ICE COVER Russian patent published in 2016 - IPC B63B35/08 B63G8/00 

FIELD: shipbuilding.

SUBSTANCE: invention relates to shipbuilding, particularly to submarine vehicles which break up ice cover using a resonance method. Device for ice breaking consists of a submarine vessel, capable of moving under ice cover and excite therein resonance flexural-gravity waves. Vessel has in water-flow channels between its strong and light two impellers, cross-sections of which are located perpendicular to longitudinal axis of vessel, they are located one after another and have in top parts open sections. Impellers can rotate in opposite directions, and blade impellers at end of open channel sections deviate, that is, be held down to inner surface of impellers, for time equal to time of approach to closed sections of next blades, after which they return to initial position. Blades of impellers are bent in directions of opposite directions of rotation of impellers.

EFFECT: technical result consists in improvement of efficiency of ice breaking.

2 cl, 3 dwg