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Old Jul 18, 2010, 01:47 AM
Fredriksson is offline
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BMW ORACLE Racing wins America's Cup using a 223 foot wing for a sail


I first read of this in the current edition of American Heritage's Invention & Technology magazine. Not sure that this post should go in this forum but it is more about the wing than it is about being a sail boat.

A wing gives lift for aircraft, lots of lift with a big wing. BMW ORACLE Racing made a 223' wing (a Boeing 747 wing is 102') and mounted it vertically (23 stories tall) and used the same principal that gives lift to an aircraft to move a sail boat through the water. They named the craft the USA-17. The article stated that in testing the USA-17 reached speeds up to 32 mph (28 knots) - about 3 times faster than the prevailing winds. This wing gave them about 6% more speed than the nearest competitor in the race.

The wing has 250 sensors that deliver 26,000 data points per second to an onboard computer that sends the information to a laptop in the helmsman's backpack which in turn sends the information to his wrist PDA and heads-up display goggles. The PDA shows a bar graph that compares current flap angles to predetermined high-efficiency targets.

Here is a picture of the boat.



Here is more information on the wing:
http://bmworacleracing.com/de/yacht/pdf/The_USA.pdf

Here is a link to the BMW ORACLE Racing Team web site:
http://bmworacleracing.com/en/index....&track.type=hn

Freddy
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Old Jul 18, 2010, 02:48 AM
Mattvr1ck is offline
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Is there anything planes can't do?
Old Jul 18, 2010, 09:41 AM
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Originally Posted by Mattvr1ck View Post
Is there anything planes can't do?
Cook.
Old Jul 18, 2010, 09:47 AM
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Old Jul 18, 2010, 01:28 PM
Thomas B is offline
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Sure, airplanes can cook!...hang a frozen dinner in the tailpipe of your surplus fighter jet, do a quick runup and you will have a hot meal in no time!..
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Old Jul 18, 2010, 02:47 PM
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Originally Posted by lmopar69 View Post
Cook.
I'm sure they can do that fiarly easiy with operating temperatures...
Old Jul 18, 2010, 03:53 PM
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was curious when a rigid sail would win... it's not a new technology, rigid sails have held sailing speed records for some time
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Old Jul 18, 2010, 09:27 PM
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Originally Posted by theKM View Post
was curious when a rigid sail would win... it's not a new technology, rigid sails have held sailing speed records for some time
The last deed of gift match held in 1988 was also won by a catameran with a rigid wing sail.

http://33rd.americascup.com/en/conte...tamaran-25-665

http://www.sailingscuttlebutt.com/news/08/0212a/


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