EPPLER 638 AIRFOIL

Thickness: 12.3%
Camber: 4.4%
Trailing edge angle: 15.0o
Lower flatness: 16.1%
Leading edge radius: 2.6%
Efficiency: 34.5
Max CL: 1.287
Max CL angle: 14.5
Max L/D: 38.334
Max L/D angle: 2.5
Max L/D CL: 0.585
Stall angle: 14.5
Zero-lift angle: -2.5