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Numerical investigations of a back-flow flap for dynamic stall control

Kaufmann, Kurt and Gardner, Anthony Donald and Richter, Kai (2012) Numerical investigations of a back-flow flap for dynamic stall control. 18. DGLR-Fach-Symposium der STAB, 06. - 07. Nov. 2012, Stuttgart, Deutschland.

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Official URL: http://www.dlr.de/as/desktopdefault.aspx/tabid-652/1104_read-1678/


Numerical investigations with the DLR TAU Code demonstrate that an actuated back-flow flap on the suction side of an OA209 helicopter airfoil is able to improve the dynamic stall behavior. When the flow begins to stall, the flap is extended which interferes with the back-flow. This weakens the dynamic stall vortex and consequentially the peak in the pitching moment peak is reduced.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical investigations of a back-flow flap for dynamic stall control
AuthorsInstitution or Email of Authors
Gardner, Anthony DonaldUNSPECIFIED
Date:12 November 2012
Refereed publication:No
In ISI Web of Science:No
Volume:Jahresbericht 2012
Page Range:pp. 104-105
Series Name:STAB Mitteilung
Keywords:flow control, dynamic stall, DLR TAU Code, back-flow flap, OA209, helicopter, rotor blade
Event Title:18. DGLR-Fach-Symposium der STAB
Event Location:Stuttgart, Deutschland
Event Type:national Conference
Event Dates:06. - 07. Nov. 2012
Organizer:Deutsche Strömungsmechanische Arbeitsgemeinschaft, STAB
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Kurt Kaufmann
Deposited On:20 Nov 2012 12:14
Last Modified:20 Nov 2012 16:02

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