Title:
DUCT DEVICE AND SHIP UTILIZING SAME
Document Type and Number:
WIPO Patent Application WO/2014/104167
Kind Code:
A1
Abstract:
This duct device is installed anterior to a propeller at the stern of a ship. The duct device is equipped with a duct body. The duct body has: a rear edge which is positioned on the posterior side of the ship, forms an arc around the rotary shaft of the propeller, and has a contour which falls within a range of 0.5R, wherein R represents the radius of the propeller, in a perpendicular direction to the rotary shaft; and a front edge which is positioned on the anterior side of the ship, forms an arc around the rotary shaft, and has a larger contour than the rear edge in a perpendicular direction to the rotary shaft. Thus, a decline in the propulsion efficiency of the propeller is prevented in the technology for installing the duct anterior to the propeller.
Inventors:
YAMADA TAKUYOSHI (JP)
KAWAKITA CHIHARU (JP)
KAWAKITA CHIHARU (JP)
Application Number:
PCT/JP2013/084812
Publication Date:
July 03, 2014
Filing Date:
December 26, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B63H5/16
Foreign References:
| JP2008137462A | 2008-06-19 | |||
| JPH0450238Y2 | 1992-11-26 | |||
| JP2011178222A | 2011-09-15 | |||
| KR20120124205A | 2012-11-13 | |||
| KR20120068222A | 2012-06-27 |
Attorney, Agent or Firm:
KUDOH Minoru (JP)
Minoru Kudo (JP)
Minoru Kudo (JP)
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