STERN DUCT, STERN ATTACHMENT, METHOD OF DESIGNING STERN DUCT, AND SHIP EQUIPPED WITH STERN DUCT

STERN DUCT, STERN ATTACHMENT, METHOD OF DESIGNING STERN DUCT, AND SHIP EQUIPPED WITH STERN DUCT

A duct body 11 is formed into an arc shape of an angle range from 90° to 140°, a radius of a rear end arc portion formed on a rear end of the duct body 11 is set to 50% or less and 20% or more of a radius of the propeller 3, and the duct body 11 is mounted on the stern 2 by support means 12 such tha...

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Bibliographische Detailangaben
Hauptverfasser: SAKAMOTO, NOBUAKI, KISHIMOTO, MASAHIRO, ICHINOSE, YASUO, UTO, SHOTARO, WAKO, DAISUKE, ARAKI, MOTOKI, FUJISAWA, JUNICHI, KANEKO, AZUMI, KAWANAMI, YASUTAKA, HINATSU, MUNEHIKO, HAMADA, TATSUYA, KASAHARA, YOSHIKAZU, KAWASHIMA, HIDEKI, KUME, KENICHI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
MARINE PROPULSION OR STEERING
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
TRANSPORTING
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Beschreibung
Zusammenfassung:A duct body 11 is formed into an arc shape of an angle range from 90° to 140°, a radius of a rear end arc portion formed on a rear end of the duct body 11 is set to 50% or less and 20% or more of a radius of the propeller 3, and the duct body 11 is mounted on the stern 2 by support means 12 such that a duct center line Yd of the duct body 11 inclines in a rotation direction of the propeller 3 with respect to a propeller 3 center line in a vertical direction of the propeller 3 in a state where the ship' s hull 1 is forwardly viewed from backward, thus, the hull efficiency can be enhanced without increasing the resistance of the ship's hull 1 even if the duct body 11 is added to the ship's hull 1.