Comparing Airfoils

FX 78-K-140 A/20

AH 81-K-144/17

FX 78-K-140 A/20 AH 81-K-144/17
Thickness (%) 14.063 14.460
Camber (%) 4.368 4.235
Trailing Edge Angle (%) 13.971 13.117
Lower Surface Flatness 11.100 10.287
Leading Edge Radius (%) 2.044 2.262
Maximum Lift (CL) 1.135 1.272
Maximum Lift Angle-of-Attack (deg) 10.500 13.500
Maximum Lift-to-drag (L/D) 35.166 40.044
Lift at Maximum Lift-to-drag 0.949 0.981
Angle-of-Attack for Maximum Lift-to-drag (L/D) 5.500 6.500