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An experimental investigation of the subsonic stall flutter
Li, Jing; Andrinopoulos, Nikolaos; Dimitriadis, Grigorios
2006In Proceedings of the 2006 International Conference on Noise and Vibration Engineering
 

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Keywords :
Stall flutter; Experimental Aerodynamics; Dynamic Stall
Abstract :
[en] This paper reports on experimental investigations of the subsonic stall flutter of a wing in a wind tunnel. Stall flutter (also know as Dynamic Stall) is a LCO phenomenon occurring when all or part of the flow over a wing separates and re-attaches at least once during a full oscillation period. In order to investigate the aeroelastic effects of the nonlinearity introduced by the boundary layer growth and flow separation and the ensuing stall-induced LCO, a wind tunnel model of a wing undergoing stall flutter is designed, built and tested. The model is a rectangular wing with constant cross-section free to move in the pitch and plunge directions, restrained by torsional and linear springs respectively. The motion of the wing is measured using laser displacement probes. Two types of stall flutter are observed and measured: 1. Non-symmetric stall flutter, where the flow separates over one side of the wing only, and 2. Symmetric stall flutter, where the flow separates over both sides of the wing (deep stall). The bifurcation behaviour of the wing is very complex and both types of LCO can be observed during a single response history.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Li, Jing;  University of Manchester > School of Mechanical Aerospace and Civil Engineering
Andrinopoulos, Nikolaos;  University of Manchester > School of Mechanical Aerospace and Civil Engineering
Dimitriadis, Grigorios ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale
Language :
English
Title :
An experimental investigation of the subsonic stall flutter
Publication date :
September 2006
Event name :
2006 International Conference on Noise and Vibration Engineering
Event organizer :
Katholieke Universiteit Leuven
Event place :
Leuven, Belgium
Event date :
du 18 septembre au 20 septembre 2006
Audience :
International
Main work title :
Proceedings of the 2006 International Conference on Noise and Vibration Engineering
Publisher :
Katholieke Universiteit Leuven, Heverlee, Belgium
ISBN/EAN :
90-73802-83-0
Pages :
1603-1614
Available on ORBi :
since 30 September 2009

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