NACA 2418 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/naca-2418-airfoil/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Computed from the NACA equations (Report 460 / Report 610, restated in NASA TM-4741)
Catalog version: 2026-10-20

Overall (mm): length 100.0, width 20.0, height 18.0
- NACA 2418: 2 % camber at 40 % chord, 18 % thick.
- NACA 4-digit: first digit = maximum camber in % of chord, second = its position in tenths of chord, last two = maximum thickness in % of chord (NACA Report 460).
- Ordinates are in % of chord from the leading edge, computed from the published equations with the closed-trailing-edge thickness coefficient (−0.1036, as in NASA TM-4741). The original reports use an open trailing edge (−0.1015); the difference is under 0.03 % of chord near the trailing edge.
- The file is a 100 mm chord section, 20 mm deep: scale it uniformly to your chord, or import the STEP and sweep or loft it into a wing. Thickness scales with chord; the shape is the same at any size.

x (% chord)  upper x  upper y  lower x  lower y
0  0.000  0.000  0.000  0.000
1.25  0.976  2.951  1.524  -2.705
2.5  2.134  4.147  2.866  -3.663
5  4.535  5.780  5.465  -4.843
7.5  6.990  6.959  8.010  -5.599
10  9.475  7.879  10.525  -6.129
15  14.500  9.221  15.500  -6.783
20  19.570  10.095  20.430  -7.095
25  24.666  10.624  25.334  -7.186
30  29.775  10.873  30.225  -7.123
40  40.000  10.700  40.000  -6.700
50  50.088  9.873  49.912  -5.984
60  60.152  8.597  59.848  -5.041
70  70.182  6.947  69.818  -3.947
80  80.171  4.965  79.829  -2.742
90  90.114  2.656  89.886  -1.433
95  95.064  1.373  94.936  -0.734
100  100.000  -0.000  100.000  0.000

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- NACA (NASA Technical Reports Server): Report 460: The characteristics of 78 related airfoil sections from tests in the variable-density wind tunnel (Jacobs, Ward, Pinkerton, 1933) — web — Publisher's page; dimensions are facts — https://ntrs.nasa.gov/citations/19930091108
- NASA: TM-4741: Computer program to obtain ordinates for NACA airfoils (Ladson, Brooks, Hill, Sproles, 1996) — web — Publisher's page; dimensions are facts — https://www.pdas.com/refs/tm4741.pdf

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/naca-2418-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=naca-2418-airfoil