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post #10 of Old 02-26-2013
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Re: End Plate Effect

Originally Posted by obelisk View Post
Thanks for the great explanations. When I posted, I was thinking of end plate effect as pertaining to a keel, but lancelot brings up a good point about a loose footed main: Is the radius of the boom on an attached foot main enough to limit or eliminate the end plate effect?
Not really but at that point there is very little impact on the performance of the overall sail. To give yourself a sense of what's going on with the sail, when close hauled take a long thin woolen yarn to the clue end of the foot and let it stream aft. To the extent you're getting vorticies, it will "pin-wheel"

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