NACA 23018 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/naca-23018-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 23018: 5-digit 230 mean line (design lift coefficient 0.3, camber peak at 15 % chord), 18 % thick.
- NACA 5-digit 230xx: '2' × 3/2 = design lift coefficient 0.3; '30' = camber peak at 15 % chord on a simple mean line; last two digits = maximum thickness in % of chord (NACA Report 610; TM-4741).
- 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  0.520  3.102  1.980  -2.389
2.5  1.623  4.489  3.377  -3.157
5  4.140  6.417  5.860  -4.107
7.5  6.826  7.755  8.174  -4.772
10  9.567  8.712  10.433  -5.310
15  15.001  9.856  14.999  -6.179
20  20.190  10.371  19.810  -6.837
25  25.197  10.565  24.803  -7.253
30  30.199  10.545  29.801  -7.453
40  40.192  10.023  39.808  -7.373
50  50.175  9.031  49.825  -6.823
60  60.151  7.702  59.849  -5.936
70  70.120  6.112  69.880  -4.787
80  80.085  4.298  79.915  -3.415
90  90.045  2.268  89.955  -1.826
95  95.023  1.166  94.977  -0.945
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-23018-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=naca-23018-airfoil