BELL 540 AIRFOIL (MODIFIED NACA 0012)

Thickness: 9.7%
Camber: 0.0%
Trailing edge angle: 16.7o
Lower flatness: 8.6%
Leading edge radius: 2.7%
Efficiency: 33.0
Max CL: 0.91
Max CL angle: 15.0
Max L/D: 33.547
Max L/D angle: 6.5
Max L/D CL: 0.725
Stall angle: 6.5
Zero-lift angle: 0.0