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Control of Flow Structure on a Semi-Circular Planform Wing

Williams, D. and Collins, J. and Jankhot, C. and Colonius, T. and Tadmor, Gilead (2008) Control of Flow Structure on a Semi-Circular Planform Wing. In: 46th AIAA Aerospace Sciences Meeting and Exhibit, 7-10 January 2008, Reno, NV.

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Active flow control is used to modify the lift, drag and pitching moments on a semicircular wing with aspect ratio, AR = 2, and chord Reynolds number is 68,000. The wing is mounted on a pitch/plunge sting mechanism that responds to the instantaneous loads and moments acting on the wing. The leading edge of the airfoil contains 16 spatially localized actuators that can be independently controlled. Smoke wire visualization, surface pressure and six-component force balance measurements are used to characterize the effects of openloop forcing. The lift coefficients on the steady wing are enhanced with the actuation, similar to the effect of dynamic stall vortex lift enhancement that occurs during a pitch up maneuver. Surface pressure measurements are being used to construct a flow model for use in feedback control. Progress toward the goal of designing a feedback controller to stabilize the flight of the model in an oscillatory freestream is discussed.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Paper Paper
Colonius, T.0000-0003-0326-3909
Additional Information:© 2008 by David R. Williams. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Published Online: 19 Jun 2012. The support for this work by the U.S. Air Force Office of Scientific Research MURI (FA9550-05-1-0369) with program manager Dr. Fariba Fahroo is gratefully acknowledged. We are also appreciative of the support for Jesse Collins from the Illinois NASA Space Grant Consortium.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-05-1-0369
Illinois Space Grant ConsortiumUNSPECIFIED
Subject Keywords:Aerospace Systems, Operations and Life Cycle
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AIAA Paper2008-597
Record Number:CaltechAUTHORS:20190717-102320045
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97211
Deposited By: Melissa Ray
Deposited On:18 Jul 2019 21:09
Last Modified:16 Nov 2021 17:29

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