Re: Winglets...

From: (SBroon)
Organization: America Online, Inc. (1-800-827-6364)
Date:         06 Feb 96 14:15:37 
References:   1
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I don't think that makes sense.  How can an airfoil mounted 90 degrees to
the horizontal increase the effective length of a wing?  The purpose of a
wing is to generate lift.  That is hard to do at 90 tilt!
I think the benefit of the winglet is reduction of the wingtip vortex.  A
vortex is the air that spirals at the tip.  If you watch the tip through a
cloud, sometimes you can see it.
Generating a vortex takes energy...if you don't make one, you use less
energy and fly more effeciently.