EP 2110311 A2 20091021 - Finned rudder
Title (en)
Finned rudder
Title (de)
Flossenruder
Title (fr)
Gouverne à ailettes
Publication
Application
Priority
JP 2008109270 A 20080418
Abstract (en)
A fin that generates thrust in the forward motion direction by utilizing rising, falling, and swirling flows near a rudder surface is attached to a rudder to improve the propulsion performance. The invention provides a finned rudder, disposed aftward of a screw propeller that rotates clockwise as viewed from the stern side during forward motion, for changing the course of a ship and provided with a first fin and a second fin in respective rudder surfaces. A first end of the first fin is attached at a position higher than a center position of the screw propeller on a leading edge side of a central portion of the rudder surface, and a first end of the second fin is attached at a position lower than the center position of the screw propeller on the leading edge side of the central portion of the rudder surface. A second end of the first fin extends at an upward inclination to a position inside the rotation radius of the screw propeller where the upward flow is strong, and a second end of the second fin extends horizontally to a position inside the rotation radius of the screw propeller where the downward flow is strong.
IPC 8 full level
B63H 25/38 (2006.01); B63H 25/52 (2006.01)
CPC (source: EP)
B63H 25/38 (2013.01); B63H 25/381 (2013.01)
Citation (applicant)
- JP H06305487 A 19941101 - HITACHI SHIPBUILDING ENG CO
- JP H11139395 A 19990525 - KAWASAKI HEAVY IND LTD
Designated contracting state (EPC)
DE ES
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2110311 A2 20091021; EP 2110311 A3 20111005; EP 2110311 B1 20130501; CN 101559828 A 20091021; CN 101559828 B 20111207; ES 2411475 T3 20130705; JP 2009255835 A 20091105
DOCDB simple family (application)
EP 09152042 A 20090204; CN 200910009826 A 20090124; ES 09152042 T 20090204; JP 2008109270 A 20080418