Effect of Compressibility on Suppression of Dynamic Stall Using a Slotted Airfoil
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Authors
Carr, L.W.
Chandrasekhara, M.S.
Wilder, M.C
Noonan, K.W.
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Date of Issue
2001
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Abstract
A multielement airfoil designed for helicopter application has been tested for compressible dynamic stall behavior and has been proven to be a robust dynamic stall-free concept. This slotted airfoil has operated into poststall areas without the dynamic stall vortex that is normally present whenever airfoils are tested beyond their static stall boundary. Point diffraction interferogram images of the dynamic flow over the airfoil are presented, showing details of the flow development during the oscillation cycle, and instantaneous pressure distributions on the airfoil and slat during dynamic airfoil motion are included.
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Article
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(AIAA Paper 98-0332), Journal of Aircraft, Vol. 38, No. 2, pp.296-309, Mar-Apr. 2001
The article of record as published may be found at http://dx.doi.org/10.2514/2.2762
The article of record as published may be found at http://dx.doi.org/10.2514/2.2762
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Aeronautics and Astronautics
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L.W.Carr, M.S.Chandrasekhara, M.C.Wilder, and K.W.Noonan, ﾓEffect of Compressibility on Suppression of Dynamic Stall Using a Slotted Airfoilﾔ, (AIAA Paper 98-0332), Journal of Aircraft, Vol. 38, No. 2, pp.296-309, Mar-Apr. 2001
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.