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Three-dimensional Design of a Large-Displacement Morphing Wing Droop Nose Device

Vasista, Srinivas and Nolte, Felix and Monner, Hans Peter and Horst, Peter (2018) Three-dimensional Design of a Large-Displacement Morphing Wing Droop Nose Device. Journal of Intelligent Material Systems and Structures. SAGE Publications. DOI: 10.1177/1045389X18770863 ISSN 1045-389X

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Official URL: http://journals.sagepub.com/doi/abs/10.1177/1045389X18770863

Abstract

The numerical three-dimensional structural design of a large-displacement flexible morphing wing leading edge, otherwise known as a droop nose, is presented in this article. The droop nose is an essential component of a novel internally blown high-lift system for a transport aircraft to delay stall and reduce internal compressor requirements. A design chain consisting of optimization procedures was used to arrive at the structural design of the droop nose composed of a composite fiberglass skin with integral stringers and supporting kinematic mechanisms. The optimization tools aim to produce a design with minimal error to the critical target shapes. A maximum final error of 10.09 mm between calculated and target trajectories of the stringers was found after the kinematic optimization stage. After inputting the kinematic optimization results into the skin optimization stage and solving, a maximum error in the order of 13 mm and curvature difference 0.0028 1/mm were calculated, occurring in the outboard region. Prior two-dimensional analyses with similar shape deviations showed 0.4% lift reduction though further three-dimensional investigations are required. Concepts for integrating industrial requirements abrasion and lightning strike protection and in-flight de-icing into a multifunctional skin show promise and the resulting aerodynamic surface quality was found to be adequate.

Item URL in elib:https://elib.dlr.de/116107/
Document Type:Article
Title:Three-dimensional Design of a Large-Displacement Morphing Wing Droop Nose Device
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vasista, Srinivassrinivas.vasista (at) dlr.dehttps://orcid.org/0000-0002-7917-6740
Nolte, Felixtechnische universität braunschweigUNSPECIFIED
Monner, Hans Peterhans.monner (at) dlr.dehttps://orcid.org/0000-0002-5897-2422
Horst, Petertu braunschweigUNSPECIFIED
Date:2018
Journal or Publication Title:Journal of Intelligent Material Systems and Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1177/1045389X18770863
Publisher:SAGE Publications
ISSN:1045-389X
Status:Published
Keywords:aircraft, morphing, droop nose, optimization, composite material skin
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:05 Dec 2017 08:04
Last Modified:18 Jun 2018 07:01

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