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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 (2017) Experimental Investigations on Aerodynamic Response of Panel Structures at High Subsonic and Low Supersonic Mach Numbers. In: CEAS 2017. CEAS 2017, 16.-20. Okt. 2017, Bukarest, Rumänien.

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Abstract

The phenomenon panel flutter is known since the mid 1940’s. Intense investigations in experiment and theory followed in the 60’s and 70’s. The developed theories are capable of describing panel flutter in the subsonic and high supersonic Mach number domain but are insufficient in the transonic domain. In the recent years new Fluid-Structure-Interaction (FSI) methods by means of coupled CFD and FE calculations have shown more accurate results in that Mach number domain. Within a common project of the Airbus Company and the German Aerospace Center (DLR) the described computational approach is used on the theoretical side. Experiments were performed in 2015 and 2017 to gain data for validation. The wind tunnel experiments were conducted by means of a forced motion experiment in a Mach number range of 0.7<M<1.2. The objective is to obtain the aerodynamic response to the panel’s deformation. In order to simulate its first bending mode shape the all edge clamped panel is deflected by a hydraulic actuator. The structure is deflected sinusoidal over a wide range of amplitudes and frequencies. The wind tunnel’s flow conditions are varied by means of the Mach number and the total pressure (Reynolds Number). Beside the measurement of the panel deformation by a stereo camera marker tracking system, the flow response is measured by high sensitive miniature pressure transducers.

Item URL in elib:https://elib.dlr.de/115633/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Investigations on Aerodynamic Response of Panel Structures at High Subsonic and Low Supersonic Mach Numbers.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lübker, Jannisjannis.luebker (at) dlr.deUNSPECIFIED
Alder, Markomarko.alder (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:CEAS 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:forced motion, wind tunnel experiment, transonic domain, aerodynamic response, aeroelastic stability
Event Title:CEAS 2017
Event Location:Bukarest, Rumänien
Event Type:international Conference
Event Dates:16.-20. Okt. 2017
Organizer:Council of European Aerospace Societies / Aeronautics and Astronautics Association of Romania (AAAR)
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 - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Grischke, Birgid
Deposited On:14 Dec 2017 10:52
Last Modified:31 Jul 2019 20:13

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