NACA6409 9%

Thickness: 9.0%
Camber: 6.0%
Trailing edge angle: 12.0o
Lower flatness: 14.7%
Leading edge radius: 2.2%
Efficiency: 34.0
Max CL: 1.53
Max CL angle: 8.0
Max L/D: 68.576
Max L/D angle: 5.0
Max L/D CL: 1.278
Stall angle: 8.0
Zero-lift angle: -6.0