PROBLEM TO BE SOLVED: To provide a duct device for a marine vessel capable of achieving an energy-saving effect.SOLUTION: A duct device 1 comprises: a duct 2 disposed at least a part around a rotation shaft AX of a propeller in a front portion of the propeller installed onto a stern of a hull 100; and a stay 3 for connecting the duct and at least a part of the hull. A cross section of the duct is an airfoil profile type. An angle between a blade chord line of the airfoil and a line parallel to the rotation shaft, and a distance between a middle point of the blade chord line and the rotation shaft are different between a first part of the duct and a second part of the duct which is different from the first part with respect to a circumferential direction of the rotation shaft.
【課題】省エネルギー効果を得ることができる船舶のダクト装置を提供する。【解決手段】ダクト装置1は、船体100の船尾に設けられたプロペラの前方においてプロペラの回転軸AXの周囲の少なくとも一部に配置されるダクト2と、ダクトと船体の少なくとも一部とを接続するステー3とを備える。ダクトの断面は、翼型であり、翼型の翼弦線と回転軸と平行な線とがなす角度と、翼弦線の中点と回転軸との距離とが、ダクトの第1部分と、回転軸の周方向に関して第1部分とは異なるダクトの第2部分とで異なる。【選択図】図2
DUCT DEVICE
ダクト装置
2015-07-09
Patent
Electronic Resource
Japanese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |