Thread: Apollo fool,,,,
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Old 14th December 2007, 03:55 AM   #62
Expander
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Join Date: Sep 2006
Location: Santa Croce lake, Italy
Posts: 132
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...a planing surface (ie a board) will not create any lift at zero angle of attack because at zero AoA there iis no momentum exchange.Board /hull or any planing surface needs to be at a slight angle to direction of travel...
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As I've written in previous post, "...in these context, in air or in water, an HIGHER Aspect Ratio has pratical effect of increasing LIFT (above all when angle of attack increases)..."

And when a windsurfing board runs on water it always (and inevitably) assumes a certain Angle of Attack for board design (scoop line).

Last edited by Expander; 14th December 2007 at 03:30 PM.
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