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Model validation of an aeroelastically-tailored forward swept wing using fibre-optical strain measurements

Govers, Yves and Meddaikar, Muhammad Yasser and Sinha, Kautuk (2018) Model validation of an aeroelastically-tailored forward swept wing using fibre-optical strain measurements. In: Proceedings of ISMA2018 International Conference on Noise and Vibration Engineering, pp. 1403-1417. ISMA 2018 - International Conference on Noise and Vibration Engineering, 17.-19. Sep. 2018, Leuven, Belgium. ISBN 9789073802995

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Abstract

The Institute of Aeroelasticity of the German Aerospace Center (DLR) in Göttingen has analysed means to passively minimise gust load encounters within the DLR project ALLEGRA. One goal was to develop and test a highly flexible forward-swept wind tunnel model which is aeroelastically optimised for maximum tip deflection while constraining the tip twist. Stiffness optimisation tools offer the possibility to design wings with very specific aeroelastic constraints. From the optimised stiffness distribution a feasible stacking sequence needs to be derived to reach the full potential of the stiffness optimisation process. After manufacturing, the wind tunnel model needs to be validated thoroughly. Here, a two-step validation process will be shown. First, static tests obtaining deflection and strain measurements are utilised to adjust the finite element model by a computational model updating (CMU) approach [1-3]. Second, experimental eigenfrequencies and strain shapes are used to check the validity of the updated model.

Item URL in elib:https://elib.dlr.de/122995/
Document Type:Conference or Workshop Item (Speech)
Title:Model validation of an aeroelastically-tailored forward swept wing using fibre-optical strain measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Govers, YvesYves.Govers (at) dlr.dehttps://orcid.org/0000-0003-2236-596X
Meddaikar, Muhammad YasserMuhammad.Meddaikar (at) dlr.dehttps://orcid.org/0000-0001-9580-7023
Sinha, KautukKautuk.Sinha (at) dlr.deUNSPECIFIED
Date:2018
Journal or Publication Title:Proceedings of ISMA2018 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:No
Page Range:pp. 1403-1417
ISBN:9789073802995
Status:Published
Keywords:strain modal testing
Event Title:ISMA 2018 - International Conference on Noise and Vibration Engineering
Event Location:Leuven, Belgium
Event Type:international Conference
Event Dates:17.-19. Sep. 2018
Organizer:KU Leuven - Department of Mechanical Engineering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Quiet und Comfortable Rotorcraft
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Govers, Dr.-Ing. Yves
Deposited On:21 Nov 2018 14:49
Last Modified:26 Nov 2018 14:54

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