Marine propulsion – Means for accomodating or moving engine fluids – Cooling for engine
Reexamination Certificate
2011-08-02
2011-08-02
Avila, Stephen (Department: 3617)
Marine propulsion
Means for accomodating or moving engine fluids
Cooling for engine
Reexamination Certificate
active
07988509
ABSTRACT:
A flow control mechanism is provided for controlling a stern flow field disturbed by cooling water discharged from the cooling water outlet of a ship. The flow control mechanism is located within a distance, which corresponds to three times the diameter of the cooling water outlet, from the cooling water outlet, is installed at an angle from 16° to 30° with respect to the horizontal plane of a hull, and has a vertical height, which is within a range from 0.2 times to 0.6 times the diameter of the cooling water outlet in a vertical direction of the hull, and a horizontal width, which is within a range from 0.5 times to 1.3 times the diameter of the cooling water outlet in a horizontal direction of the hull. Thereby, the flow control mechanism restores the distribution of wake flow that encounters a propeller so that the distribution of the wake flow is symmetrical around the central axis of the hull, and reduces the generation of a cavity. Thus, the vibration performance of the ship is improved, and the propulsive efficiency of the ship is also improved.
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Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 46710/1986 (Laid-Open No. 157697/1987) (Mitsubishi Heavy Industries, Ltd.), Oct. 6, 1987.
International Search Report for Corresponding International Patent Application No. PCT/KR2006/000193.
Ahn Sung-mok
Choi Sang-kyu
Choi Soon-ho
Hwangbo Seung-myun
Avila Stephen
Locke Lord Bissell & Liddell LLP
Samsung Heavy Ind. Co. Ltd.
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