Wind Tunnel Testing of Folding Wing-Tip Devices for Gust Loads Alleviation

Ronald Cheung, Andrea Castrichini, Djamel Rezgui, Jonathan Cooper, Thomas Wilson

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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An increasing number of recent aircraft designs have begun considering the use of higher aspect ratio wings for reducing induced drag to improve fuel consumption. The increased wing span has led to the introduction of folding wing-tips as a solution for meeting airport gate requirements. Recent numerical studies have suggested such folding wing-tip solutions may be incorporated with spring devices to provide gust loads alleviation in flight as well. A series of low-speed wind tunnel tests was conducted in order to demonstrate such a concept using a prototype model. It was found that gust loads alleviation could be achieved using a folding wing-tip with a non-zero relative angle of the folding hinge axis to the stream-wise direction. The best loads alleviation performance varied with hinge angle setting and hinge stiffness, as well as lifting condition.
Original languageEnglish
Title of host publication17th International Forum on Aeroelasticity and Structural Dynamics (IFASD 2017)
Subtitle of host publicationProceedings of a meeting held 25-28 June 2017, Como, Italy
Number of pages17
Publication statusPublished - May 2018


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