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・ Bruce H. Tiffney
・ Bruce Haack
・ Bruce Hagen
・ Bruce Haigh
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・ Bruce Hale
・ Bruce Haley
・ Bruce Halford
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・ Bruce Flatt
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・ Bruce Fleisher
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Bruce foil
・ Bruce Foods
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・ Bruce Ford
・ Bruce Ford (rower)
・ Bruce Ford (tenor)
・ Bruce Fordyce
・ Bruce Forman
・ Bruce Forrester
・ Bruce Forrester (speedway rider)
・ Bruce Forsyth
・ Bruce Forsyth's Big Night
・ Bruce Forsyth's Hot Streak
・ Bruce Foster Sterling


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Bruce foil : ウィキペディア英語版
Bruce foil

A Bruce foil is a variant of the leeboard, consisting of a foil typically mounted on an outrigger and always set at an angle to provide both lateral and vertical force. It was invented by Edmond Bruce in the early 1960s, and first published in the Amateur Yacht Research Society publication in April 1965.
==Theory==
Nearly all methods that increase resistance to sideways movement also cause heeling, the leaning produced by the imbalance of the forces on the sails, high above the waterline, and the sideways resistance, generated by the centerboard or other foil below the waterline. The resulting torque causes the hull to heel until the buoyancy of the hull provides sufficient torque to balance the heeling force. The limited buoyancy of the hull therefore limits the amount of force that the sail can effectively produce.
One solution to dealing with this limit is to bring the forces generated by the sail and the underwater foil into alignment, canceling as much of the torque as possible and thus reducing the amount of heeling. Two approaches to this have surfaced one being the inclined rig, and the other the Bruce foil.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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