Title:
排水および半排水船の半浸漬プロペラ推進機関
Document Type and Number:
Japanese Patent JP2009522155
Kind Code:
A
Abstract:
A propulsion system of displacement or semi-displacement ships, comprising one or more propellers of semi-submerged type, arranged with a partial immersion of the sole bottom blades and with the top blades emerged, regardless of the state of motion and the trim of the craft, allows, employed power being equal, a higher propulsion efficiency and allows to keep the driveline of the propellers entirely above water level, wherein said semi-submerged propellers are arranged at the transom, the ratio of diameter (D) or sum of diameters (NpxD) of the semi-submerged propellers to craft width (L) at the water line (3) is greater than 0.50.
Inventors:
Acampora, Brunello
Levi, Renato
Levi, Renato
Application Number:
JP2008547981A
Publication Date:
June 11, 2009
Filing Date:
December 30, 2006
Export Citation:
Assignee:
Flexitab S.L.L.
International Classes:
B63B1/04; B63H1/28; B63B1/16; B63H1/18; B63H5/10; B63H5/16
Domestic Patent References:
| JPS6288697A | 1987-04-23 | |||
| JP2000025693A | 2000-01-25 |
Attorney, Agent or Firm:
▲吉▼川 俊雄