An appendage 8 for reducing a hub vortex is arranged, through a support 7 extending from a hull 2, behind a propeller (wing propeller) 4 having no rudder behind the propeller. The appendage 8 is in the form of a spindle having a circular cross-section in a direction perpendicular to a central axis of the spindle along a hull and having a rear portion with gradually reduced diameters toward a rear end. The appendage 8 has a maximum diameter and a length along a hull which are 10-40% inclusive and 40-70% inclusive of the diameter of the propeller (wing propeller) 4, respectively.
PROPULSION DEVICE FOR MULTI-SHAFT SHIP
ANTRIEBSVORRICHTUNG FÜR MEHRWELLENSCHIFF
DISPOSITIF DE PROPULSION DE NAVIRE À ARBRES MULTIPLES
2021-08-18
Patent
Elektronische Ressource
Englisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
PROPULSION DEVICE FOR NEIGHBORING-TWIN-SCREW SHIP HAVING SHAFT BRACKETS, AND SHIP
Europäisches Patentamt | 2016
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