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Morphing Devices for a Wing and Wingtip Based on Compliant Structures

Vasista, Srinivas and Monner, Hans Peter and de Gaspari, Alessandro and Ricci, Sergio (2014) Morphing Devices for a Wing and Wingtip Based on Compliant Structures. EASN, 27.-29. Okt. 2014, Aachen, Deutschland.

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Abstract

This paper presents work being conducted by the German Aerospace Center (DLR) and the Politecnico di Milano (POLIMI) on morphing structures as part of the EU FP7 NOVEMOR Project. A regional jetliner was the reference aircraft and a droop-nose morphing wingtip (DLR) and various leading and trailing edge devices on the wing (POLIMI) were applied to this reference aircraft. Various design and optimization tools were developed and explored by both institutions. For the DLR wingtip, a design chain was employed whereby a composite skin optimization tool was first used to define the layup sequence and geometry for the skin followed by topology optimization for the design of the internal compliant structure. Construction is underway of a full-scale wind tunnel model and the results of the ground testing of a demonstrator show the working principle of the design chain and its compliant components. For the morphing devices of POLIMI, the definition of the optimal morphing shapes, taking into account both aerodynamic performances and skin structural constraints, was performed before, using the code PHORMA. Then the code SPHERA was used to design the compliant mechanism able to meet the optimal shapes previously defined. Both codes are part of a parametric framework incorporating CFD-FEA interaction and genetic algorithm based optimizers. Manufacturing of prototypes for wind tunnel testing is also in progress and the experimental setup is also presented in this paper.

Item URL in elib:https://elib.dlr.de/91818/
Document Type:Conference or Workshop Item (Speech)
Title:Morphing Devices for a Wing and Wingtip Based on Compliant Structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vasista, SrinivasInstitut für Faserverbundleichtbau und AdaptronikUNSPECIFIED
Monner, Hans PeterInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikUNSPECIFIED
de Gaspari, AlessandroPolitecnico di MilanoUNSPECIFIED
Ricci, SergioPolitecnico di MilanoUNSPECIFIED
Date:2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:morphing structures; droop-nose; variable camber; compliant mechanism; topology optimization; genetic algorithm
Event Title:EASN
Event Location:Aachen, Deutschland
Event Type:international Conference
Event Dates:27.-29. Okt. 2014
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
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Stanitzek, Silke
Deposited On:17 Nov 2014 08:17
Last Modified:17 Nov 2014 08:17

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