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Experimental investigations on aerodynamic response of panel structures at high subsonic and low supersonic mach numbers

Lübker, Jannis and Alder, Marko (2018) Experimental investigations on aerodynamic response of panel structures at high subsonic and low supersonic mach numbers. Transportation Research Procedia, 29, pp. 222-232. Gebruder Borntraeger Verlagsbuchhandlung. doi: 10.1016/j.trpro.2018.02.020.

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Official URL: https://www.journals.elsevier.com/transportation-research-procedia


Panel flutter is an aeroelastic phenomenon known since the mid 1940’s. Extensive experimental and theoretical studies followed in the 1960’s and 70’s. The theoretical models applied at that time yield satisfactory results for subsonic and high supersonic Mach numbers but are inaccurate in terms of predicting the aerodynamic loads at transonic flows. In the recent years new Fluid-Structure-Interaction (FSI) methods by means of coupled CFD and FE computations have shown an increased accuracy in that Mach number domain. Within a common research project of the Airbus Company and the German Aerospace Center (DLR) such a computational approach is used for theoretical panel flutter analysis. Experiments were performed in 2015 and 2017 to validate the numerical results and to study the flow characteristics in the Mach number range 0.7 < M∞ < 1.2. For this purpose the aerodynamic response on the first eigenmode of a clamped rectangular plate is measured by means of forced motion experiments. Hydraulic actuation is used to realize small sinusoidal deflections of the plate over a wide range of amplitudes and frequencies, which has been verified by a stereo camera marker tracking system. The flow conditions in the wind tunnel are varied by means of the Mach number and the total pressure (Reynolds number) and the flow response is measured by high sensitive miniature pressure transducers.

Item URL in elib:https://elib.dlr.de/125863/
Document Type:Article
Title:Experimental investigations on aerodynamic response of panel structures at high subsonic and low supersonic mach numbers
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lübker, Jannisjannis.luebker (at) dlr.deUNSPECIFIED
Alder, Markomarko.alder (at) dlr.deUNSPECIFIED
Journal or Publication Title:Transportation Research Procedia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1016/j.trpro.2018.02.020
Page Range:pp. 222-232
EditorsEmailEditor's ORCID iD
Publisher:Gebruder Borntraeger Verlagsbuchhandlung
Series Name:Elsevier Transportation Research
Keywords:forced motion; wind tunnel experiment; transonic domain; aerodynamic response; aeroelastic stability
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):Experimentelle Methoden zur Raumfahrzeugauslegung (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Lübker, Jannis
Deposited On:14 Jan 2019 09:30
Last Modified:06 Sep 2019 15:30

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