This ship with a small duct is characterized in having a propeller (10) attached to a stern of a hull (1), and a duct (20) attached to the front of the propeller (10), the hull (1) being a small duct having a propeller load condition in actual sea areas of 1.0 or greater and an eddy resistance of 10% or greater, and the diameter of the duct (20) being between 20% and 50% inclusive of the diameter of the propeller (10). Therefore, a hull (1) that yields a horsepower-reducing effect is specified from the relationship between eddy resistance and the propeller load condition, and the shape of the propeller (10) is contrived and a small duct (20) is placed near the front of the propeller (10) as an energy-saving device that has the characteristics of both a large duct and a small duct, whereby cavitation is suppressed and interference with the small duct (20) is utilized to optimize the radial load distribution of the efficiency-governing propeller (10) in actual sea areas where the load rate increases.
SHIP WITH SMALL DUCT AND METHOD FOR ASSESSING APPLICATION OF SMALL DUCT ON SHIP
21.10.2015
Patent
Elektronische Ressource
Englisch
SHIP WITH SMALL DUCT AND METHOD FOR ASSESSING APPLICATION OF SMALL DUCT ON SHIP
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