Title:
SHIP AND STERN SHAPE HAVING STERN DUCT
Document Type and Number:
WIPO Patent Application WO/2017/038862
Kind Code:
A1
Abstract:
This stern shape is equipped with a propeller 20 provided to a stern section 15 of a ship hull 10, and a stern duct 30 attached to the front of the propeller 20. The ship hull 10 has a stern in the shape of a V, a duct body 31 of the stern duct 30 has a semi-cylindrical shape, a rear edge 32 of the duct body 31 is shaped to have a parallel section 33 in the middle of an upper section of which a semicircle substantially centered around an axial center 21 of the propeller 20 is shifted to the left and right sides when viewed forward from behind the ship hull 10, the inside radius of the semicircle is set to a range of 40-80% of the radius R of the propeller 20, and the left-to-right horizontal width W of the parallel section 33 is set to 5-25% of the diameter Dp of the propeller 20, whereby maximum transport efficiency is achieved through the effect of interference between the ship hull shape and the propeller.
Inventors:
ICHINOSE YASUO
KASAHARA YOSHIKAZU
KANEKO AZUMI
FUKASAWA RYOHEI
KUME KENICHI
KAWASHIMA HIDEKI
SAKAMOTO NOBUAKI
FUJISAWA JUNICHI
OHBA HIROKI
WAKO DAISUKE
KASAHARA YOSHIKAZU
KANEKO AZUMI
FUKASAWA RYOHEI
KUME KENICHI
KAWASHIMA HIDEKI
SAKAMOTO NOBUAKI
FUJISAWA JUNICHI
OHBA HIROKI
WAKO DAISUKE
Application Number:
PCT/JP2016/075454
Publication Date:
March 09, 2017
Filing Date:
August 31, 2016
Export Citation:
Assignee:
NAT INST OF MARITIME PORT AND AVIATION TECH (JP)
International Classes:
B63H5/16; B63B1/08
Foreign References:
| JP2015127179A | 2015-07-09 | |||
| JP2008137462A | 2008-06-19 | |||
| JPS63151396U | 1988-10-05 | |||
| JPS5253387A | 1977-04-28 | |||
| JP2015116850A | 2015-06-25 | |||
| JPH0450238Y2 | 1992-11-26 | |||
| JP2006347285A | 2006-12-28 | |||
| JPS59128498U | 1984-08-29 | |||
| KR20120136072A | 2012-12-18 |
Other References:
See also references of EP 3345824A4
Attorney, Agent or Firm:
ABE, Shinichi et al. (JP)
Download PDF: