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Wind Tunnel Experiments with Active Flow Control for an Outer Wing Model

Ciobaca, Vlad and Wild, Jochen and Bauer, Matthias and Grund, Thomas and Hühne, Philipp and Scholz, Peter and Stefes, Bruno (2015) Wind Tunnel Experiments with Active Flow Control for an Outer Wing Model. 33rd AIAA Applied Aerodynamics Conference, 22.-26. Jun. 2015, Dallas, TX, USA. DOI: 10.2514/6.2015-2728

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/6.2015-2728


This contribution discusses the implementation of fluidic slit-actuators as well as fluidic vortex generators on a three dimensional model of the outer wing of a long-range transport aircraft at take-off, by low speed wind tunnel experiments in the large test facility of DNW-NWB. The leading-edge high-lift unprotected wing extension, including a wingtip device, designed for high performance at cruise flight, is subject to local flow separation at high angles of attack and low speed flight conditions. Active flow control (AFC) applied at the outer wing can prevent the formation of large turbulent flow separation and increase the aircraft lift to drag ratio (L/D), decrease the drag (D), and increase the angle of attack (AoA) for maximum lift (CLmax). The recently performed experiments show the improvement in the aerodynamic coefficients by the local AFC applications. The drag coefficient decreases of up to 40% at fixed large AoA, while the maximum AoA is proved to increase in the order of 2°. The results suggest a successful implementation on a transport aircraft and with an acceptable blowing momentum coefficient.

Item URL in elib:https://elib.dlr.de/100049/
Document Type:Conference or Workshop Item (Speech)
Additional Information:in Rahmen von LuFo IV MOVE.ON (Luftfahrtforschungsprogramm IV, “MOVable dEsign and Optimisation of performance and low Noise”)
Title:Wind Tunnel Experiments with Active Flow Control for an Outer Wing Model
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ciobaca, Vladvlad.ciobaca (at) dlr.deUNSPECIFIED
Wild, Jochenjochen.wild (at) dlr.deUNSPECIFIED
Bauer, MatthiasTU BerlinUNSPECIFIED
Grund, ThomasTU BerlinUNSPECIFIED
Hühne, PhilippTU BraunschweigUNSPECIFIED
Scholz, PeterTU BraunschweigUNSPECIFIED
Stefes, BrunoAirbusUNSPECIFIED
Date:May 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2015-2728
Keywords:Active Flow Control, Wind Tunnel Testing, Fluidic Actuators, High-Lift, Transport Aircraft, Wingtip
Event Title:33rd AIAA Applied Aerodynamics Conference
Event Location:Dallas, TX, USA
Event Type:international Conference
Event Dates:22.-26. Jun. 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Ciobaca, Vlad
Deposited On:07 Dec 2015 15:23
Last Modified:07 Dec 2015 15:23

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