Conceptual Aircraft Design

Appendix EAerofoil Data

Data Courtesy of I. R. Abbott and A. E. Von Doenhoff, Theory of Wing Sections.

NACA 4412

(Stations and ordinates given in per cent of aerofoil chord)

Upper surface		Lower surface
Station	Ordinate	Station	Ordinate
0	0	0	−0
1.25	2.44	1.25	−1.43
2.5	3.39	2.5	−1.95
5.0	4.73	5.0	−2.49
7.5	5.76	7.5	−2.74
10	6.59	10	−2.86
15	7.89	15	−2.88
20	8.80	20	−2.74
25	9.41	25	−2.50
30	9.76	30	−2.26
40	9.80	40	−1.80
50	9.19	50	−1.40
60	8.14	60	−1.00
70	6.69	70	−0.65
80	4.89	80	−0.39
90	2.71	90	−0.22
95	1.47	95	−0.16
100	(0.13)	100	(−0.13)
100	—	100	0

L.E. radius: 1.58

Slope of radius through L.E.: 0.20

NACA 4415

(Stations and ordinates given in per cent of aerofoil chord)

Upper surface		Lower surface
Station	Ordinate	Station	Ordinate
0	—	0	0
1.25	3.07	1.25	−1.79
2.5	4.17	2.5	−2.48
5.0	5.74	5.0	−3.27
7.5	6.91	7.5	−3.71
10	7.84	10	−3.98
15	9.27	15	−4.18
20	10.25	20	−4.15
25	10.92	25	−3.98
30	11.25	30	−3.75
40	11.25	40	−3.25
50	10.53	50	−2.72
60	9.30	60	−2.14
70	7.63	70	−1.55
80	5.55	80	−1.03
90	3.08	90	−0.57
95	1.67	95	−0.36
100	(0.16)	100	(−0.16)
100	—	100	0

L.E. radius: 2.48

Slope of radius through L.E.: 0.20

NACA 23012

(Stations and ordinates given in per cent of aerofoil chord)

Upper surface		Lower surface
Station	Ordinate	Station	Ordinate
0	—	0	0
1.25	2.67	1.25	−1.23
2.5	3.61	2.5	−1.71
5.0	4.91	5.0	−2.26
7.5	5.80	7.5	−2.61
10	6.43	10	−2.92
15	7.19	15	−3.50
20