SHIP AND STERN SHAPE HAVING STERN DUCT
A stern shape having a stern duct 30, including a propeller 20 provided on a stern portion 15 of a ship's hull 10, and the stern duct 30 mounted in front of the propeller 20, wherein the ship's hull 10 has a V stern shape, a duct body 31 of the stern duct 30 is semicylindrical in shape, a...
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| creator | ICHINOSE, Yasuo KAWASHIMA, Hideki WAKO, Daisuke FUJISAWA, Junichi KUME, Kenichi KASAHARA, Yoshikazu OHBA, Hiroki KANEKO, Azumi SAKAMOTO, Nobuaki FUKASAWA, Ryohei |
| description | A stern shape having a stern duct 30, including a propeller 20 provided on a stern portion 15 of a ship's hull 10, and the stern duct 30 mounted in front of the propeller 20, wherein the ship's hull 10 has a V stern shape, a duct body 31 of the stern duct 30 is semicylindrical in shape, a rear edge of the duct body 31 has a shape including a parallel part 33 at a central position of its upper portion from which a semicircle substantially centering on an axis 21 of the propeller 20 is offset toward both left and right sides when the ship's hull 10 is forwardly viewed from a rear portion thereof, an inner radius of the semicircle is set in a range of 40% or more and 80% or less of a radius of the propeller 20, and a width of the parallel part 33 in a lateral horizontal direction of the parallel part 33 is set to 5% or more and 25% or less of a diameter of the propeller 20, and according to this configuration, a maximum transport efficiency can be obtained by an interference effect between the shape of the ship's hull and the propeller. |
| format | Patent |
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KANEKO, Azumi ; SAKAMOTO, Nobuaki ; FUKASAWA, Ryohei</creatorcontrib><description>A stern shape having a stern duct 30, including a propeller 20 provided on a stern portion 15 of a ship's hull 10, and the stern duct 30 mounted in front of the propeller 20, wherein the ship's hull 10 has a V stern shape, a duct body 31 of the stern duct 30 is semicylindrical in shape, a rear edge of the duct body 31 has a shape including a parallel part 33 at a central position of its upper portion from which a semicircle substantially centering on an axis 21 of the propeller 20 is offset toward both left and right sides when the ship's hull 10 is forwardly viewed from a rear portion thereof, an inner radius of the semicircle is set in a range of 40% or more and 80% or less of a radius of the propeller 20, and a width of the parallel part 33 in a lateral horizontal direction of the parallel part 33 is set to 5% or more and 25% or less of a diameter of the propeller 20, and according to this configuration, a maximum transport efficiency can be obtained by an interference effect between the shape of the ship's hull and the propeller.</description><language>eng ; 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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP3345824B1 |
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| subjects | EQUIPMENT FOR SHIPPING MARINE PROPULSION OR STEERING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING |
| title | SHIP AND STERN SHAPE HAVING STERN DUCT |
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