elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Evaluation of a Compliant Droop-Nose Morphing Wing Tip via Experimental Tests

Vasista, Srinivas and Riemenschneider, Johannes and Van de Kamp, Bram and Monner, Hans Peter and Cheung, R.C.M. and Wales, C. and Cooper, J.E. (2016) Evaluation of a Compliant Droop-Nose Morphing Wing Tip via Experimental Tests. Journal of Aircraft. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.C033909 ISSN 0021-8669

Full text not available from this repository.

Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.C033909

Abstract

A morphing droop-nose wing tip with span of 1.3 m and target 2 deg droop was designed, manufactured, and tested as part of the European project Novel Air Vehicle Configurations: From Fluttering Wings to Morphing Flight. The morphing droop-nose device featured a fiberglass composite skin with optimized three-dimensional thickness distribution, which was supported by topology-optimized superelastic nickel titanium and aluminum internal compliant mechanisms. The tests included ground and low-speed wind-tunnel tests (55  m/s) with the aim of assessing the structural performance and the design chain through measurements of shape, strains, surface pressures, and total forces/moments on the model. Comparisons with the experimental results were used for validation of the computational models and optimization tools. The morphing device was able to change shape while resisting the external loads, and it was identified that the distribution of strain and shape accuracy may be improved through the use of a concurrent as opposed to sequential design chain and other developments to the optimization tools. The use of a superelastic material facilitated the high-strain displacement, exceeding 2% strain in the design case and measured up to 4.54%, making it highly suitable for compliant mechanism applications. This paper explains the insights made from the experimental tests and recommendations for the future design of morphing structures.

Item URL in elib:https://elib.dlr.de/107374/
Document Type:Article
Title:Evaluation of a Compliant Droop-Nose Morphing Wing Tip via Experimental Tests
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vasista, SrinivasInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikUNSPECIFIED
Riemenschneider, JohannesInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikUNSPECIFIED
Van de Kamp, BramInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikUNSPECIFIED
Monner, Hans PeterInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikUNSPECIFIED
Cheung, R.C.M.Department of Aerospace Engineering, University of BristolUNSPECIFIED
Wales, C.Department of Aerospace Engineering, University of BristolUNSPECIFIED
Cooper, J.E.Department of Aerospace Engineering, University of BristolUNSPECIFIED
Date:2016
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.C033909
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:Published
Keywords:Morphing wing, droop nose, compliant mechanisms
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: Vasista, Srinivas
Deposited On:07 Nov 2016 07:44
Last Modified:08 Mar 2018 18:41

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.