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Buzz Light Beer
06-25-2012, 10:47 AM
http://www.voilesetvoiliers.com/popup/34e-coupe-de-l-america-s-cup-san-francisco-scoop-l-ac45-d-oracle-a-chausse-des-foils/

Photoboy
06-25-2012, 02:56 PM
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During last week’s training session in San Francisco, ORACLE TEAM USA sailors were learning to fly on hydrofoils. An L-shaped daggerboard and T-shaped rudders were fitted to one of the team’s AC45s and the platform took flight.

Foiling is not a new phenomenon. Many high-speed ferries rely on hydrofoils for a smooth ride for their passengers. In sailing, the Moth class has experimented with foils since the early 1970s, about the same time that designers such as Rod Macalpine-Downey were experimenting with foils at Weymouth Speed Week. In 2009 the 60-foot foiling trimaran l’Hydroptere set the record at 51.36 knots.

Foils help reduce draft and increase speed. They are a very cost efficient way to gain performance. You can research them extensively in the computer before you build them, and they are small scale, compared with a wing. The foil project is a continuation of one started on USA 17, the team’s 90-foot trimaran that won the 2010 America’s Cup.

—Sean McNeill

http://pressure-drop.us/imagehost/images/49638841510994034892.jpg

All photos, Guilain Grenier/ Oracle Racing USA


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http://www.americascup.com/en/Teams/ORACLE-TEAM-USA/Latest/Blog/2012/06-June/Flying-like-L/