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Real-time assessment of flutter stability based on automated output-only modal analysis

Jelicic, G. and Schwochow, Jan and Govers, Yves and Hebler, Anne and Böswald, Marc (2014) Real-time assessment of flutter stability based on automated output-only modal analysis. In: International Conference on Noise and Vibration Engineering, pp. 3693-3706. ISMA 2014 - International Conference on Noise and Vibration Engineering, 15.-17. Sept. 2014, Leuven, Belgien.

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Abstract

During the development of new aircraft wind tunnel testing of 2D and 3D airfoils or even complete aircraft is essential. The structural integrity of the wind tunnel model needs to be assured for the test campaign because a failure can cause severe damage on the wind tunnel facility and means the loss of the costly model itself. To enhance the level of safety, a detection of the flutter stability while testing is necessary. This paper addresses a method for fast and reliable identification of eigenfrequencies and damping ratios using operational modal analysis methods. The developed procedure has been applied in a wind tunnel test campaign by the Institute of Aeroelasticity of the German Aerospace Center (DLR) in the Transonic Wind Tunnel in Göttingen, Germany. A 2D airfoil was tested in a so-called flutter test rig with two degrees of freedom for pitch and heave motion. The main focus of the presented method is the time efficiency of the algorithm which enables the user for quasi “real time assessment” of the flutter stability.

Item URL in elib:https://elib.dlr.de/91496/
Document Type:Conference or Workshop Item (Poster)
Title:Real-time assessment of flutter stability based on automated output-only modal analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jelicic, G.goran.jelicic (at) dlr.dehttps://orcid.org/0000-0001-5091-6699
Schwochow, Janjan.schwochow (at) dlr.deUNSPECIFIED
Govers, Yvesyves.govers (at) dlr.deUNSPECIFIED
Hebler, Anneanne.hebler (at) dlr.deUNSPECIFIED
Böswald, Marcmarc.boeswald (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:International Conference on Noise and Vibration Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:pp. 3693-3706
Status:Published
Keywords:flutter stability, modal analysis
Event Title:ISMA 2014 - International Conference on Noise and Vibration Engineering
Event Location:Leuven, Belgien
Event Type:international Conference
Event Dates:15.-17. Sept. 2014
Organizer:Katholieke Universiteit Leuven
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Grischke, Birgid
Deposited On:23 Dec 2014 14:12
Last Modified:24 Jun 2019 11:00

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