Combined bulbous bow and sonar dome for a vessel

Details Combined bulbous bow and sonar dome for a vessel Combined bulbous bow and sonar dome for a vessel

1992-08-17

1994-01-25

Oberleitner, Robert J.

Ships

Displacement-type hull

114 67R, 114288, B63B 106

Patent

active

052807614

ABSTRACT:
To reduce the total ship resistance and to improve a propeller efficiency and cavitation performance due to the reduced thrust loading on the propeller for ships or vessels having a sonar dome or an equivalently shaped designs located below the baseline of the hull, a teardrop-shaped bulbous bow is attached to the ship stem bow between the forward perpendicular of the bow and 12.7 ft forward of the forward perpendicular of the vessel, inclusive, and between the ship design waterline and the baseline. The bulbous bow is separate and discrete, and spaced from the sonar dome and has a shaped of a teardrop. The teardrop shaped bulbous bow is mounted to the ship stem bow with the round end portion pointing in the forward direction and the pointed end portion pointing in the aft direction.

REFERENCES:
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patent: 2918029 (1959-12-01), Legat
patent: 3250238 (1966-05-01), Reder
patent: 3302603 (1967-02-01), Eckert
patent: 3455262 (1969-07-01), Weicker
patent: 3946687 (1976-03-01), Taylor et al.
patent: 4003325 (1977-01-01), Allen
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patent: 4706596 (1987-11-01), Charvin
patent: 4843989 (1989-07-01), Langenberg
patent: 5008863 (1991-04-01), Archibald
patent: 5090352 (1992-02-01), Stanford
Kracht, Alfred M. "Design of Bulbous Bows," The Society of Naval Architects nd Marine Engineers Transactions, vol. 86 (1978), pp. 197-217.

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