Morphing électroactif hybride par la conception d'actionneurs-capteurs intégrés pour l'augmentation des performances aérodynamiques - application aux ailes de l'Airbus A320.

For the next 20 years, the quantity of air travelers in the world is expected to rise to almost the double of the current number. This growth is followed by the eminent increase of greenhouse gas emissions linked to climate change. Another obvious consequence is the higher operation cost for airline companies. These factors explain the need for better efficiency for modern aircrafts. Among these studies there is the Smart Morphing and Sensing European Project. The goal of the project is to design a system of electroactive actuators for two different time scales. Shape Memory Alloys (SMA) are used for low-frequency camber control of an A320 wing prototype at reduced scale, developed by LAPLACE, while piezoelectric based actuators are responsible for high frequency vibration of its trailing-edge. The experiments have been carried out in the S4 subsonic windtunnel at the IMFT facilities in Toulouse to analyze shear-layer dynamics. TR-PIV results were acquired at Reynolds Number of 700k and 1 million. In addition, lift and unsteady pressure measurements were obtained at different upstream velocities. Spectral analysis were computed to investigate the effects of morphing on vortices manipulation and turbulence reduction