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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


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
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Vasista, SrinivasUNSPECIFIEDhttps://orcid.org/0000-0002-7917-6740UNSPECIFIED
Nolte, Felixtechnische universität 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: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 (old)
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:03 Nov 2023 11:05

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