Visualizing dynamic-stall airflows
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A new wind-tunnel apparatus facilitates experiments on airfoils undergoing dynamic stall. Dynamic stall occurs when an airfoil is pitched rapidly past the static stall angle. In dynamic stall, lift can become greater than that in steady flow.
This work was done by L. Carr of Ames Research Center and M. Chandrasekhara of the Naval Postgraduate School. Further information may be found in AIAA paper 89A-25511, "Design and Development of a Compression Dynamic Stall Facility".
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