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#1
October 21st 04, 09:40 AM
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On Wed, 20 Oct 2004 03:16:14 UTC, "COLIN LAMB"
wrote: : If a wing is replaced by a rotating cylinder, with the forward surface : rotating upward, lift will be produced. The local air velocity is high on : top and low on the bottom. This upward force is known as magnus effect. It's a simple illustration of the idea that vorticity/rotation produces lift. Instead of inducing the rotation by the shape of the section, you spin the cylinder and drag the air round with it. : The information above comes from my helicopter handbook. The theory is used : to explain some helicopter principles, but caused me to wonder more about : it. Has anyone every produced an airplane using the magnus effect? There's a shop in Covent Garden which sells magnus effect rotor-kites. And you might like to look up the Flettner Rotor Ship, "Baden Baden" (http://college.hmco.com/history/read...sh_009400_bade nbaden.htm for example). Ian 
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