Title:
STERN STRUCTURE
Document Type and Number:
Japanese Patent JP2021091250
Kind Code:
A
Abstract:
To provide a stern structure capable of further improving propulsion performance using a bilge vortex.SOLUTION: A stern structure 1 includes a stern boss 3 located in front of a propeller 5, a fan-shaped duct 6 provided on the stern boss 3 so as to cover a space above the stern boss 3, and a fin 7 provided on the stern boss 3 so as to protrude sideways from the stern boss 3 to generate thrust by using an obliquely downward flow. The entire fin 7 in the vertical direction is located below the duct 6 and at least a part of the fin 7 in the ship longitudinal direction is located in front of the duct 6 so that the obliquely downward flow toward the fin 7 turns into the flow going into the duct 6.SELECTED DRAWING: Figure 1
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Inventors:
HAMANO TETSUYA
KOBASHI KENJIRO
OHASHI SHIGEKO
YOKOYAMA SHINO
KOBASHI KENJIRO
OHASHI SHIGEKO
YOKOYAMA SHINO
Application Number:
JP2019221417A
Publication Date:
June 17, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
B63H5/16
Attorney, Agent or Firm:
Patent business corporation Yuko patent office