EPPLER 642 AIRFOIL

Thickness: 15.1%
Camber: 3.1%
Trailing edge angle: 11.3o
Lower flatness: 7.0%
Leading edge radius: 2.5%
Efficiency: 39.4
Max CL: 1.303
Max CL angle: 11.0
Max L/D: 41.557
Max L/D angle: 7.5
Max L/D CL: 1.039
Stall angle: -0.5
Zero-lift angle: -2.5