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2 137 666

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IPC

(21) (22)

Application

98119212/28, 1998-10-19

(24)

Start date

1998-10-19

(22)

Actual filing date

1998-10-19

(45)

Published

1999-09-20

(72)

Inventor

Kozin V.M.

(73)

Holder

Institut Mashinovedenija I Metallurgii Dal'Nevostochnogo Otdelenija Ran

METHOD OF BREAKING ICE COVER Russian patent published in 1999 - IPC

Abstract RU 2137666 C1

FIELD: shipbuilding; Hovercraft breaking ice cover by resonance method. SUBSTANCE: thrustmeter is fitted on propeller shaft. In the course of change of ship's speed, resistance to motion and consequently readings of thrustmeter change. Resonance speed is determined by maximum magnitude of thrust of ship's propeller. EFFECT: enhanced efficiency of breaking ice cover due to more accurate determination of resonance speed. 2 cl

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RU 2 137 666 C1

Authors

Kozin V.M.

Dates

1999-09-20—Published

1998-10-19—Filed

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