METHOD OF BREAKING ICE COVER Russian patent published in 2005 - IPC

FIELD: ice breaking technique; breaking ice cover by resonance method with the aid of hovercraft.

SUBSTANCE: proposed method includes excitation of resonance flexural gravitational waves in ice and creation and change of aerodynamic lift force at frequency of resonance flexural gravitational waves. In the course of motion of ship, alternating aerodynamic lift force is created at frequency of resonance flexural gravitational waves by turning the horizontal plates to positive and negative angles of attack towards incoming flow of air. Plates are mounted on upper deck. Angles of attack are periodically changed at frequency of said waves.

EFFECT: increased thickness of ice broken by this method.

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