The effect of folding wingtips on the flight dynamics of an aircraft with elastic wing

Davide Balatti, Hamed Haddad Khodaparast, Michael I. Friswell, Marinos Manolesos, Mohammadreza Amoozgar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In recent years, the development of lighter and more efficient transport aircraft has led to an increased focus on gust load alleviation. A recent strategy is based on the use of folding wingtip devices that increase the aspect ratio and therefore improves the aircraft performance. Moreover, numerical studies have suggested such a folding wingtip solution may incorporate spring devices in order to provide additional gust load alleviation ability in flight. It has been shown that wingtip mass, stiffness connection and hinge orientation are key parameters to avoid flutter and achieve load alleviation during gusts. In this paper, after defining a simplified aeroelastic model representative of an symmetric aircraft, considers the case of adding movable wingtips. The effects of hinge position, orientation and spring stiffness will be considered in order to evaluate the potential of this technique for gust load alleviation. Moreover, is studied the longitudinal flight dynamics of a rigid aircraft with elastic wing and folding wingtips.

Original languageEnglish
Title of host publicationEURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings
EditorsManolis Papadrakakis, Michalis Fragiadakis, Costas Papadimitriou
PublisherEuropean Association for Structural Dynamics
Number of pages9
ISBN (Electronic)9786188507203, 9786188507227
Publication statusPublished - 1 Sep 2020
Event11th International Conference on Structural Dynamics - Virtual, Athens, Greece
Duration: 23 Nov 202026 Nov 2020
Conference number: 11

Publication series

NameProceedings of the International Conference on Structural Dynamic , EURODYN
ISSN (Print)2311-9020


Conference11th International Conference on Structural Dynamics
Abbreviated titleEURODYN 2020
CityVirtual, Athens
Internet address


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