Title:
揚力発生体
Document Type and Number:
Japanese Patent JP6621911
Kind Code:
B2
Abstract:
A lift generator (10) is positioned in front of a propeller (3) of a ship (1). The lift generator (10) includes a wall part (7) extending in the circumferential direction around an extension line (Ce) of the central axis (C) of the propeller (3). A flow path penetrating the wall part (7) in the direction of the extension line (Ce) is formed inside the wall part (7). In an airfoil, an outer side surface forming an outer circumferential surface (7a) of the wall part (7) is curved inward so as to form a recess. The airfoil satisfies |dt/dx|≤0.15 over the entire range from a set position, at which the airfoil has a maximum thickness, to the trailing edge, wherein dx represents the minute change amount of a position coordinate x in the blade chord direction of the airfoil, dt represents the minute change amount of a thickness t with respect to dx, and |dt/dx| represents the magnitude of dt/dx.
Inventors:
Seisaku Masuda
Makino Koji
Takagishi Kenroku
Makino Koji
Takagishi Kenroku
Application Number:
JP2018505064A
Publication Date:
December 18, 2019
Filing Date:
March 14, 2016
Export Citation:
Assignee:
Japan Marine United Co., Ltd.
International Classes:
B63H5/16
Domestic Patent References:
| JP55033896U | ||||
| JP4024895U | ||||
| JP56138093A | ||||
| JP2002220089A | ||||
| JP58173599U |
Foreign References:
| KR1020120136072A | ||||
| WO2014115567A1 |
Attorney, Agent or Firm:
Minoru Hotta