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Static and Dynamic Aeroelastic Validation of a Flexible Forward Swept Composite Wing

Ritter, Markus and Meddaikar, Muhammad Yasser and Dillinger, Johannes (2017) Static and Dynamic Aeroelastic Validation of a Flexible Forward Swept Composite Wing. In: 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. AIAA SciTech 2017, 09.-13. Jan. 2017, Grapevine, Texas, USA. DOI: 10.2514/6.2017-0637

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/6.2017-0637


An aeroelastically tailored, forward swept composite wing was designed, manufactured, and tested at DLR. One of the goals was the determination of a siffness distribution that maximizes the deflection and minimizes the twist of the wing under high aerodynamic loading. The design of the wing involved a stiffness-based continuous optimization process combined with a discrete stacking sequence optimization using blended laminates. Steady and dynamic aeroelastic tests were performed in a low-speed wind tunnel, where the deformations of the wing and loads were measured. This paper describes the approaches applied to the numerical simulation of the wing and presents comparisons of simulation results to experimental data. The test cases and validations comprise three parts: Static coupling with tip displacements up to 20%, unsteady structural dynamics without aerodynamic forces, and unsteady aeroelasticity. For the unsteady test cases, dynamic effects were provoked by excitation of the wing root in a pitch degree of freedom. The numerical simulations used methods of different fidelity. Geometrically linear and nonlinear structural methods are applied, and for the aeroelastic tests combined with a vortex-lattice method. Good agreement between experiment and simulation was obtained for both the steady and unsteady test cases.

Item URL in elib:https://elib.dlr.de/110839/
Document Type:Conference or Workshop Item (Speech)
Title:Static and Dynamic Aeroelastic Validation of a Flexible Forward Swept Composite Wing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ritter, Markusmarkus.ritter (at) dlr.deUNSPECIFIED
Meddaikar, Muhammad YasserMuhammad.Meddaikar (at) dlr.deUNSPECIFIED
Dillinger, JohannesJohannes.Dillinger (at) dlr.dehttps://orcid.org/0000-0002-7522-7555
Date:10 January 2017
Journal or Publication Title:58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2017-0637
Keywords:aeroelastic simulation, aeroelastic tailoring, CFRP, composite materials, fluid-structure-interaction, vortex-lattice, CFD
Event Title:AIAA SciTech 2017
Event Location:Grapevine, Texas, USA
Event Type:international Conference
Event Dates:09.-13. Jan. 2017
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 - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Ritter, Markus Raimund
Deposited On:01 Feb 2017 11:54
Last Modified:01 Feb 2017 11:54

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