04.2 - Aerostructures Design, Structural Dynamics, Aeroelasticity
NUMERICAL INVESTIGATION ON THE DOUBLE TRANSONIC DIP OF SUPERCRITICAL AIRFOIL FLUTTER
T. Miyake¹, H. Terashima¹; ¹Hokkaido University, Japan
The supercritical airfoil uniquely exhibited a double transonic dip on the flutter boundary. The second transonic dip at a high Mach number condition was only observed for the supercritical airfoil. It was indicated that the generation of the second transonic dip was associated with the unsteady behaviors of flow separation and reattachment over the lower surface.