Nonlinear Negative Stiffness Wingtip Spring Device for Gust Loads Alleviation

Andrea Castrichini; Jonathan E Cooper; T Wilson; Alex Carrella; Yves Lemmens

doi:10.2514/1.C033887

Nonlinear Negative Stiffness Wingtip Spring Device for Gust Loads Alleviation

Andrea Castrichini, Jonathan E Cooper, T Wilson, Alex Carrella, Yves Lemmens

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Abstract

A recent consideration in aircraft design is the use of folding wing-tips with the aim of having higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations. This study builds on previous work investigating the effect of exploiting folding wing-tips in-flight as a device to reduce dynamic gust loads, but now with the introduction of a passive nonlinear negative stiffness hinge spring. A single degree of freedom model and a representative civil jet aircraft aeroelastic model were used to investigate the dynamic gust response for different hinge device designs. It was found that significant reductions in the dynamic loads were possible.

Original language	English
Pages (from-to)	627-641
Number of pages	15
Journal	Journal of Aircraft
Volume	54
Issue number	2
Early online date	3 Nov 2016
DOIs	https://doi.org/10.2514/1.C033887
Publication status	Published - Mar 2017
Event	15th Dynamics Specialists Conference, 2016 - San Diego, United States Duration: 4 Jan 2016 → 8 Jan 2016

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10.2514/1.C033887

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Aerospace Research Central at http://arc.aiaa.org/doi/full/10.2514/1.C033887 . Please refer to any applicable terms of use of the publisher.
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Castellani, M., Castrichini, A., Gaitonde, A. L., Jones, D. P., Lowenberg , M. H., Poncet-Montanges, A. P., Tartaruga, I., Valente, C. & Cooper, J. E.
1/10/13 → 30/09/17
Project: Research

Cite this

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title = "Nonlinear Negative Stiffness Wingtip Spring Device for Gust Loads Alleviation",

abstract = "A recent consideration in aircraft design is the use of folding wing-tips with the aim of having higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations. This study builds on previous work investigating the effect of exploiting folding wing-tips in-flight as a device to reduce dynamic gust loads, but now with the introduction of a passive nonlinear negative stiffness hinge spring. A single degree of freedom model and a representative civil jet aircraft aeroelastic model were used to investigate the dynamic gust response for different hinge device designs. It was found that significant reductions in the dynamic loads were possible.",

author = "Andrea Castrichini and Cooper, {Jonathan E} and T Wilson and Alex Carrella and Yves Lemmens",

year = "2017",

month = mar,

doi = "10.2514/1.C033887",

language = "English",

volume = "54",

pages = "627--641",

journal = "Journal of Aircraft",

issn = "0021-8669",

publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

number = "2",

note = "15th Dynamics Specialists Conference, 2016 ; Conference date: 04-01-2016 Through 08-01-2016",

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TY - JOUR

T1 - Nonlinear Negative Stiffness Wingtip Spring Device for Gust Loads Alleviation

AU - Castrichini, Andrea

AU - Cooper, Jonathan E

AU - Wilson, T

AU - Carrella, Alex

AU - Lemmens, Yves

PY - 2017/3

Y1 - 2017/3

N2 - A recent consideration in aircraft design is the use of folding wing-tips with the aim of having higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations. This study builds on previous work investigating the effect of exploiting folding wing-tips in-flight as a device to reduce dynamic gust loads, but now with the introduction of a passive nonlinear negative stiffness hinge spring. A single degree of freedom model and a representative civil jet aircraft aeroelastic model were used to investigate the dynamic gust response for different hinge device designs. It was found that significant reductions in the dynamic loads were possible.

AB - A recent consideration in aircraft design is the use of folding wing-tips with the aim of having higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations. This study builds on previous work investigating the effect of exploiting folding wing-tips in-flight as a device to reduce dynamic gust loads, but now with the introduction of a passive nonlinear negative stiffness hinge spring. A single degree of freedom model and a representative civil jet aircraft aeroelastic model were used to investigate the dynamic gust response for different hinge device designs. It was found that significant reductions in the dynamic loads were possible.

U2 - 10.2514/1.C033887

DO - 10.2514/1.C033887

M3 - Article (Academic Journal)

VL - 54

SP - 627

EP - 641

JO - Journal of Aircraft

JF - Journal of Aircraft

SN - 0021-8669

IS - 2

T2 - 15th Dynamics Specialists Conference, 2016

Y2 - 4 January 2016 through 8 January 2016

ER -

Nonlinear Negative Stiffness Wingtip Spring Device for Gust Loads Alleviation

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