Selig S4083 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/s4083-airfoil/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Coordinates from the UIUC Airfoil Coordinates Database; thickness, camber and section by Xem Studio
Catalog version: 2026-10-20

Overall (mm): length 100.0, width 20.0, height 8.0
- Selig S4083: Michael Selig (S series). Maximum thickness 8.00 % of chord at 22.6 % chord; maximum camber 3.45 % of chord at 35.5 % chord.
- Coordinates from the UIUC Airfoil Coordinates Database (M. Selig, UIUC Applied Aerodynamics Group), file s4083.dat, titled 'S4083 (8%)'. Thickness and camber are computed by Xem Studio from those points (vertical distance at equal x, linear between points).
- The published trailing edge is sharp, so the section uses it as printed.
- 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.

parameter  value  source
Max thickness  8.00 % chord at 22.6 % chord  computed from the UIUC coordinates
Max camber  3.45 % chord at 35.5 % chord  computed from the UIUC coordinates
Published points  81 (43 upper, 39 lower, shared leading edge)  UIUC coordinates
Trailing edge as published  sharp (closed)  UIUC coordinates
y at x = 1.25 % chord  upper +1.629 / lower -0.826 % chord  linear between the published points (UIUC coordinates)
y at x = 2.5 % chord  upper +2.493 / lower -1.030 % chord  linear between the published points (UIUC coordinates)
y at x = 5 % chord  upper +3.743 / lower -1.205 % chord  linear between the published points (UIUC coordinates)
y at x = 7.5 % chord  upper +4.653 / lower -1.265 % chord  linear between the published points (UIUC coordinates)
y at x = 10 % chord  upper +5.363 / lower -1.256 % chord  linear between the published points (UIUC coordinates)
y at x = 15 % chord  upper +6.356 / lower -1.142 % chord  linear between the published points (UIUC coordinates)
y at x = 20 % chord  upper +6.963 / lower -0.956 % chord  linear between the published points (UIUC coordinates)
y at x = 25 % chord  upper +7.253 / lower -0.742 % chord  linear between the published points (UIUC coordinates)
y at x = 30 % chord  upper +7.307 / lower -0.514 % chord  linear between the published points (UIUC coordinates)
y at x = 40 % chord  upper +6.941 / lower -0.066 % chord  linear between the published points (UIUC coordinates)
y at x = 50 % chord  upper +6.223 / lower +0.327 % chord  linear between the published points (UIUC coordinates)
y at x = 60 % chord  upper +5.325 / lower +0.647 % chord  linear between the published points (UIUC coordinates)
y at x = 70 % chord  upper +4.318 / lower +0.825 % chord  linear between the published points (UIUC coordinates)
y at x = 80 % chord  upper +3.196 / lower +0.720 % chord  linear between the published points (UIUC coordinates)
y at x = 90 % chord  upper +1.907 / lower +0.412 % chord  linear between the published points (UIUC coordinates)
y at x = 95 % chord  upper +1.139 / lower +0.202 % chord  linear between the published points (UIUC coordinates)
Coordinates source  UIUC Airfoil Coordinates Database: s4083.dat ('S4083 (8%)')  UIUC Applied Aerodynamics Group (M. Selig)

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- UIUC Applied Aerodynamics Group (M. Selig): UIUC Airfoil Coordinates Database: s4083.dat ('S4083 (8%)') — web — UIUC Airfoil Coordinates Database, public research data; coordinates are facts, cited and linked, not rehosted — https://m-selig.ae.illinois.edu/ads/coord/s4083.dat
- UIUC Applied Aerodynamics Group (M. Selig): UIUC Airfoil Coordinates Database (original: Michael Selig (S series)) — web — UIUC Airfoil Coordinates Database, public research data; coordinates are facts, cited and linked, not rehosted — https://m-selig.ae.illinois.edu/ads/coord_database.html

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/s4083-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=s4083-airfoil