From: firstname.lastname@example.org (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.