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Title: 帆角度制御による横揺れ減揺の研究
Other Titles: Roll-damping Control by Sail-angle
Authors: 芳村, 康男1 Browse this author →KAKEN DB
五十嵐, 佳子2 Browse this author
黒田, 貴子3 Browse this author
菊本, 充弘4 Browse this author
Authors(alt): Yoshimura, Yasuo1
Igarashi, Yoshiko2
Kuroda, Takako3
Kikumoto, Mitsuhiro4
Issue Date: Dec-2005
Publisher: 日本船舶海洋工学会
Journal Title: 日本船舶海洋工学会論文集
Volume: 2
Start Page: 237
End Page: 242
Abstract: Recent huge amount of CO2 discharge and the diffusion of detrimental substances by the excessive use of petroleum resources have brought the serious problem of an earth scale such as the global warming. It has been the world common subject for every work of the future to take account of the preserving natural environments. There are several solutions for taking place the petroleum energy. One of them is the wind energy. In 1980’s when the petroleum price jumped up with the twice oil crises, the use of wind power was re-examined. Many kind of modern sailing rigs and new concepts of sail-equipped ships were proposed. These researches are summarized in the international symposiums by RINA, and some of them were successful projects among them. Although the purpose of such sail-equipped ship is obviously the use of the above-mentioned wind energy, it is also empirically known as a secondary effect that the rolling of ship can be reduced by the sail. This comes from the air damping force of sail since the inflow angle of the sail changes with the rolling and this change acts on the direction which decreases the rolling. From this fact, the rolling can be more reduced if the angle of a sail is well controlled against the rolling. In this paper, the roll-damping mechanism is solved based upon the aero and hydrodynamics, and then the control technique of sail angle for decreasing the rolling for various wind directions is proposed, where the sail angle: ΔδS is simply controlled as ΔδS=kφ, but the polarity of control gain: k must be changed with the wind direction and average sail angle. According to this method, the validity and use of this control have been checked by the model experiments. As the results, it is found that the rolling angle can be remarkably decreased when the ship is sailing against the oblique wind and wave.
Rights: Copyright 2005 日本船舶海洋工学会
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 芳村 康男

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