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Transient dynamic system behavior of pressure actuated cellular structures in a morphing wing

Meyer, Patrick and Lück, Sebastian and Spuhler, Tobias and Bode, Christoph and Hühne, Christian and Friedrichs, Jens and Sinapius, Michael (2021) Transient dynamic system behavior of pressure actuated cellular structures in a morphing wing. Aerospace. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/aerospace8030089. ISSN 2226-4310.

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Official URL: https://doi.org/10.3390/aerospace8030089


High aspect ratio aircraft have a significantly reduced induced drag, but have only limited installation space for control surfaces near the wingtip. This paper describes a multidisciplinary design methodology for a morphing aileron that is based on pressure-actuated cellular structures (PACS). The focus of this work is on the transient dynamic system behavior of the multi-functional aileron. Decisive design aspects are the actuation speed, the resistance against external loads, and constraints preparing for a future wind tunnel test. The structural stiffness under varying aerodynamic loads is examined while using a reduced-order truss model and a high-fidelity finite element analysis. The simulations of the internal flow investigate the transient pressurization process that limits the dynamic actuator response. The authors present a reduced-order model based on the Pseudo Bond Graph methodology enabling time-efficient flow simulation and compare the results to computational fluid dynamic simulations. The findings of this work demonstrate high structural resistance against external forces and the feasibility of high actuation speeds over the entire operating envelope. Future research will incorporate the fluid–structure interaction and the assessment of load alleviation capability.

Item URL in elib:https://elib.dlr.de/141440/
Document Type:Article
Title:Transient dynamic system behavior of pressure actuated cellular structures in a morphing wing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Meyer, Patrickpat.meyer (at) tu-braunschweig.dehttps://orcid.org/0000-0001-7308-5138
Lück, Sebastians.lueck (at) ifas.tu-braunschweig.deUNSPECIFIED
Spuhler, Tobiast.spuhler (at) ifas.tu-braunschweig.deUNSPECIFIED
Bode, Christophchr.bode (at) ifas.tu-braunschweig.deUNSPECIFIED
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Friedrichs, Jensj.friedrichs (at) ifas.tu-braunschweig.deUNSPECIFIED
Sinapius, Michaelm.sinapius (at) tu-braunschweig.dehttps://orcid.org/0000-0002-1873-9140
Journal or Publication Title:Aerospace
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/aerospace8030089
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:pressure-actuated cellular structure; morphing aileron; shape variability; transient internal flow; computational fluid dynamics; pseudo bond graph methodology; reduced-order model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design, L - Aircraft Systems
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kobus, Christine
Deposited On:17 May 2021 05:52
Last Modified:06 Jun 2021 16:05

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