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Airfoil with movable flap in smoke tunnel

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Uploaded on Jan 31, 2009

Additional video for oscillating vortices at very high angle of attack: http://www.youtube.com/watch?v=vttSiN.... The Separation bubble forms behind the airfoil when the angle of attack is very high. Notice also how streamlines upwind of the airfoil can sense and adjust slightly to changes made downwind in flap deflection and airfoil deflection. Smoke visualization technique + tunnel dimension and other useful things can be found at: http://soliton.ae.gatech.edu/classes/...

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