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Extremely deformable morphing leading edge: Optimization, design and structural testing

Rudenko, Anton and Hannig, Andre and Monner, Hans Peter and Horst, Peter (2017) Extremely deformable morphing leading edge: Optimization, design and structural testing. Journal of Intelligent Material Systems and Structures. SAGE Publications. doi: 10.1177/1045389X17721036. ISSN 1045-389X.

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Official URL: http://journals.sagepub.com/doi/abs/10.1177/1045389X17721036


The future generation of high-lift devices needs to be improved to reduce the noise footprint and increase the performance for takeoff and landing of transport aircraft. To contribute to these goals, an active blown Coanda flap-based high-lift system is being investigated within the German national Collaborative Research Center 880 as an alternative to the state-of-the-art flaps. A key part of this system is an adaptive gapless droop nose with extremely large morphing deformation. The design and construction of this component are based on a structural optimization framework. The framework consists of two hierarchical design steps: an optimization of the hybrid composite skin layout with integral T-stringers, acting as joints to the inner actuation mechanism, and the kinematic optimization of the latter. A hybrid skin structure allows a large curvature to rupture in the morphing direction, while providing high stiffness in the transverse direction. This article describes a full-scale hybrid composite morphing droop nose and its structural tests. The results of these tests are finally compared to the finite element simulation and applied for validation of the optimization framework. A sensitivity analysis is provided to evaluate the influence of modelling and manufacturing uncertainties to the shape quality.

Item URL in elib:https://elib.dlr.de/115836/
Document Type:Article
Additional Information:Peer-reviewed article
Title:Extremely deformable morphing leading edge: Optimization, design and structural testing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Hannig, Andreinstitute of aircraft design and lightweight structures, tu braunschweigUNSPECIFIEDUNSPECIFIED
Monner, Hans PeterUNSPECIFIEDhttps://orcid.org/0000-0002-5897-2422UNSPECIFIED
Horst, Petertu braunschweigUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Journal of Intelligent Material Systems and Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:SAGE Publications
Keywords:leading edge, morphing, adaptive structures, full-scale, structural demonstrator, hybrid, composites
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 - Structures and Materials (old), L - Simulation and Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Vasista, Srinivas
Deposited On:23 Nov 2017 14:45
Last Modified:10 Jan 2019 15:48

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