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From: Tom Rogers (no email)
Date: Mon Oct 01 2001 - 21:56:40 EDT
Your winglet sounds like the same theory behind curving the wing tips of
jets. It gives the vortices created during the production of lift a smooth
path to follow away from the wing (in your case rudder).
Thanks,
Tom Rogers
-----Original Message-----
From:
[mailto:]On Behalf Of Roger Crawford
Sent: Monday, October 01, 2001 2:48 PM
To: ; Live Aboard
Subject: lv-ab: Increasing speed
A few years ago when I owned a trimaran and was a member of "the Amatuer
Yacht Building/Designing Group, one of their members claimed that by putting
an half a wing at the top part of each side of the rudder (outboard rudder)
just under water that it would kinda fool the boat into thinking it was
longer and subsequently you would go faster. I tried it and I swear it
worked. I think. My current boats rudder protrudes from the water under the
counter. I could do the same thing and add a couple of feet to the water
line length of my boat and the concurrent increase in speed. Anyone tried
this or have any opinions. I don't think I ever heard (or at least
understood) the physics behind why longer waterline boats go faster.
Roger
SV Yonder
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