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. Ship in made between its strong and light bodies of water-flow channels of impeller is fitted with two cross-sections which are located perpendicular to longitudinal axis of vessel, they are located one after another and have in top parts of open sections of impeller 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 on time equal to time of approach to closed sections of next blades, after which come back into initial position, frequency of rotation of impellers is periodically changed with frequency of resonance flexural-gravity waves, and time intervals during which is reduced with subsequent increase of frequency of rotation of impellers are equal to half-period of resonance waves.

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

1 cl, 3 dwg