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Development of an unsteady wind tunnel experiment for vortex dominated flow at a Lambda – wing

Wiggen, Stefan and Voß, Guido (2013) Development of an unsteady wind tunnel experiment for vortex dominated flow at a Lambda – wing. In: CEAS 2013 Air & Space Conference Book of Abstracts. CEAS 2013, 16.-19. Sept. 2013, Linköping.

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A half wing model, a test rig and new wind tunnel walls were designed to study the vortex development at a lambda wing. It has a sweep angle of 53° and round leading edges. It is designed for pitching oscillations around a mean angle of attack of up to 20°, up to a Mach number of 0.7. Unsteady aerodynamic load data shall be delivered for aeroelastic calculations of Unmanned Combat Aerial Vehicles (UCAV). Due to the highly nonlinear aerodynamic character, the design of the model had to take into account load cases with beginning and fully developed vortices. Furthermore, the different character at subsonic and transonic speeds had to be included. Coupled simulations with a finite element model including the mounting and the connection to the actuation system were performed to assess the dynamic stability. An optimized peniche reduces wing–wall interferences. The test concept and the process of the design will be described.

Item URL in elib:https://elib.dlr.de/84414/
Document Type:Conference or Workshop Item (Speech)
Title:Development of an unsteady wind tunnel experiment for vortex dominated flow at a Lambda – wing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wiggen, Stefanstefan.wiggen (at) dlr.deUNSPECIFIED
Voß, Guidoguido.voss (at) dlr.deUNSPECIFIED
Date:August 2013
Journal or Publication Title:CEAS 2013 Air & Space Conference Book of Abstracts
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:vortex, lambda wing, round leading edge, high sweep angle, unsteady Experiment, pitch oscillation
Event Title:CEAS 2013
Event Location:Linköping
Event Type:international Conference
Event Dates:16.-19. Sept. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Wiggen, Stefan
Deposited On:25 Sep 2013 16:54
Last Modified:08 May 2014 23:24

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