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High-Speed Sailing
Sailrocket gets air (take two)
08 October 2009
I hope you have been following Sailrocket's current record attempt. The craft flipped once again, which is unfortunate, but Paul's safety gear provided the protection needed and he is ok.

The cause of the flip is said to be due to a wave boosting the lee pod up, combined with a failure of the main foil attachment. I know no more about this than what is on Paul's blog at this time. Even so, I am quite certain that the actual cause of the flip is due to the cross-arm wing; once it got a greater angle of attack (from the boost) it provided enough lift to flip the craft.

The main foil attachment failure would cause that foil to go more vertical and that would cause the foil (and front of the craft) to be forced up. However, without the cross-arm wing, the craft would not have flipped. It would have slid sideways (down wind) and rotated off the wind, slowing all the while. It may well have also been forced into a jibe (not pretty).

Good luck to Paul and crew in making rapid repairs and continuing their quest for the record.

Bob
Paul | Flados@netzero.com
08 October 2009 23:24:02Z
I remember how good the design looked when I first started following sailrocket. Now the forward location of the crossbeam looks like such a handicap. After the first flip, I made comments that they need more down force from the beam (a flap near the hull with a strong negative angle of attack) and less down force from the foil. Betting on the foil to never to loose its grip has cost them again. Hopefully they will repair fast enough and gett lucky with smooth water.
John |
14 October 2009 05:54:13Z
I don't know...this new high speed sailing technique is looking to be more fun than sailboarding, and they are known for getting air! And here I was thinking sit down sailing was boring!~
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15 October 2009 02:41:10Z
Hey John, you nailed it! I've been certain for several years that guys were going to launch off waves. Just have not done any R&D on it. Sailrocket beat me to that one!
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