Abstract: Based on the wind tunnel of SIAMM400 provided by Shanghai Institute of Applied Mathematics and Mechanics, experiments were carried out on aerodynamic characteristics near GA-1060 wing under low Reynolds numbers. The results show that GA-1060 wing with blunt leading edges and bend trailing edges,and small thickness, has better aerodynamic performances in comparison with the original airfoil (NACA0012). Especially for those with large attack angles, the lift coefficient and lift-drag ratio are improved by 27% at α=6°. Moreover, formation and development of the wing tip vortex is influenced by the interaction with flow separation and wing tip vortex.

Key words: aerodynamic characteristics, flow separation, low Reynolds number, micro air vehicle (MAV)