Stall flutter Research Project

Project Name Funding Body Industrial Partners Academic/Research Partners Duration
Stall flutter of a rectangular wing N/A N/A N/A 2009-2012

Stall flutter is an aeroelastic instability that can affect several types of aeroelastic systems, such as helicopter and wind turbine blades. It is a Limit Cycle Oscillation (LCO) that can cause significant vibration amplitudes, efficiency drops, control difficulties, decrease in fatigue life and even failure.

The purpose of the present research is to investigate several different stall flutter mechanisms that can occur simple aeroelastic systems, such as a rectangular wing with two degrees of freedom in pitch and plunge.

A pitch-plunge rectangular wing in the ULg wind tunnel

Small amplitude stall flutter oscillations

PIV visualization showing periodic flow separation near the leading edge during stall flutter