Movie that explains how the aeroflexible Surface helps to stabilize a Wing at High attack angle. The stabilizing is established not only by the turbulent boundary layer (which has shown in measurements lowers the airfoils drag) but also avoids early stall. The profile can sustain lift up to an Angle to 40° at higher angles of attack element of the bottom side act as a passive Krüger-Flap due the shifting of the stagnation point which does helps also to sustain Lift beyond that angle so the airfoil can raised up to 50° before full Stall happens.
