METHOD OF BREAKING ICE COVER Russian patent published in 2004 - IPC

FIELD: shipbuilding; submarine vessels breaking ice cover by resonance method at surfacing in solid ice.

SUBSTANCE: proposed method consists in exciting resonance flexural gravitational waves in ice during motion of ship at resonance speed in repeated passes. Ship runs near lower surface of ice. Speed of repeated passes shall be equal to hump speed, i.e. it shall correspond to maximum wave resistance. After successive pass, situation of safe surfacing is estimated by determination of degree of breaking ice by deflection of ultrasonic signal from ice cover sent from radiator and received by receiver mounted on upper deck of vessel.

EFFECT: enhanced safety of surfacing of submarine vessel under ice conditions.

1 dwg