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- Winged_keel abstract "The Winged Keel is a sailboat keel originally designed by Ben Lexcen and made its first appearance on the 12-metre class yacht Australia II in the 1983 America's Cup. Along with Australia II's efficient sail design, this keel was one of the factors contributing to Australia II's success. The increased stability afforded by the winged keel, due mainly to the extra lead in the wings producing a very low centre of gravity, allowed Australia II to be as short and light as possible under the 12 meter rules, and still carry enough sail to beat the American entry. The wings were angled downwards at about 20 degrees, which, since they were lifting downwards, acted as a dihedral.The lateral wings of a winged keel are usually of moderate aspect ratio, that uses a nearly horizontal foil, the \"wing\", at the bottom to provide additional span. Note that, contrary to classic configuration, the keel is \"upside down\" under the hull (the root chord is smaller than the tip (bottom) chord. Each wing acts as a winglet, effectively doubling the keel aspect ratio and reducing lift-induced drag. Because the yacht is heeled over when sailing upwind the leeward foil is closer to vertical and provides additional side force, reducing the leeway angle, hence making the boat sail upwind more efficiently. Winged keels are generally found on high performance sailboats, if they are not prohibited by class rules. They are only of benefit for yachts sailing upwind where stability and the ability to produce side force are important and if the draft is limited by the class rule. Downwind the extra skin friction drag is a hindrance. Besides the performance benefits, winged keels can also be applied to pleasure boats as a way to reduce draft, allowing for greater versatility when gunkholing.Winged keels may incorporate a significant amount of ballast where the wings join the keel. This feature makes these winged keels also another type of bulb keel.".
- Winged_keel thumbnail Australia_II_winged_keel.JPG?width=300.
- Winged_keel wikiPageID "1778077".
- Winged_keel wikiPageLength "2466".
- Winged_keel wikiPageOutDegree "28".
- Winged_keel wikiPageRevisionID "637078225".
- Winged_keel wikiPageWikiLink 12-metre_class.
- Winged_keel wikiPageWikiLink 1983_Americas_Cup.
- Winged_keel wikiPageWikiLink Americas_Cup.
- Winged_keel wikiPageWikiLink Aspect_ratio_(aeronautics).
- Winged_keel wikiPageWikiLink Australia_II.
- Winged_keel wikiPageWikiLink Ben_Lexcen.
- Winged_keel wikiPageWikiLink Bulb_keel.
- Winged_keel wikiPageWikiLink Category:Australian_inventions.
- Winged_keel wikiPageWikiLink Category:Sailboat_components.
- Winged_keel wikiPageWikiLink Category:Shipbuilding.
- Winged_keel wikiPageWikiLink Dihedral_(aeronautics).
- Winged_keel wikiPageWikiLink Draft_(hull).
- Winged_keel wikiPageWikiLink Drag_(physics).
- Winged_keel wikiPageWikiLink Foil_(fluid_mechanics).
- Winged_keel wikiPageWikiLink Gunkholing.
- Winged_keel wikiPageWikiLink Keel.
- Winged_keel wikiPageWikiLink Leeway.
- Winged_keel wikiPageWikiLink Lift-induced_drag.
- Winged_keel wikiPageWikiLink Sailing_ballast.
- Winged_keel wikiPageWikiLink Skin_friction_drag.
- Winged_keel wikiPageWikiLink United_States.
- Winged_keel wikiPageWikiLink Windward_and_leeward.
- Winged_keel wikiPageWikiLink Wing.
- Winged_keel wikiPageWikiLink Wingtip_device.
- Winged_keel wikiPageWikiLink File:Australia_II_winged_keel.JPG.
- Winged_keel wikiPageWikiLinkText "Winged keel".
- Winged_keel wikiPageWikiLinkText "winged keel".
- Winged_keel wikiPageUsesTemplate Template:Refimprove.
- Winged_keel subject Category:Australian_inventions.
- Winged_keel subject Category:Sailboat_components.
- Winged_keel subject Category:Shipbuilding.
- Winged_keel hypernym Keel.
- Winged_keel type Ship.
- Winged_keel type Component.
- Winged_keel type Sailboat.
- Winged_keel type Ship.
- Winged_keel comment "The Winged Keel is a sailboat keel originally designed by Ben Lexcen and made its first appearance on the 12-metre class yacht Australia II in the 1983 America's Cup. Along with Australia II's efficient sail design, this keel was one of the factors contributing to Australia II's success.".
- Winged_keel label "Winged keel".
- Winged_keel sameAs Q8025176.
- Winged_keel sameAs m.05w4ww.
- Winged_keel sameAs Q8025176.
- Winged_keel wasDerivedFrom Winged_keel?oldid=637078225.
- Winged_keel depiction Australia_II_winged_keel.JPG.
- Winged_keel isPrimaryTopicOf Winged_keel.