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#9
October 5th 07, 11:12 PM
posted to rec.aviation.piloting
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Backwash Causes Lift?
"Le Chaud Lapin" wrote in message oups.com... The air on the "outside" of the umbrella does *NOT* instantaneously fill the void that is created by yanking the umbrella. All you need to change the known science of aerodynamics is a wind tunnel. For example, some of your fellow aerospace scientists use this one: http://www.ccastronomy.org/photo_NAS...14_640x480.jpg http://www.windtunnels.arc.nasa.gov/...2FT/12ft2.html It's amazing. They even have a supersonic wind tunnel so they can test their aerodynamic ideas. Not only that, but they have a VR lab nearby that lets them look at 3D renderings of the wind tunnel results. -c 
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