Hello;
I'm testing an aerofoil in a wind tunnel to see the stall angle and effect of vortex generators.
1 - I'm using a NACA 6313 aerofoil, when testing it in my company's low-speed when tunnel (when it's plain i.e. no VG's on it) at low air velocity (25 m/s) the aerofoil stall at 13 degrees...