Selig S7075 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/s7075-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 9.0
- Selig S7075: Michael Selig (S series). Maximum thickness 9.00 % of chord at 29.0 % chord; maximum camber 3.03 % of chord at 46.8 % chord.
- Coordinates from the UIUC Airfoil Coordinates Database (M. Selig, UIUC Applied Aerodynamics Group), file s7075.dat, titled 'S7075 (9%)'. 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  9.00 % chord at 29.0 % chord  computed from the UIUC coordinates
Max camber  3.03 % chord at 46.8 % 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 +1.772 / lower -1.038 % chord  linear between the published points (UIUC coordinates)
y at x = 2.5 % chord  upper +2.558 / lower -1.352 % chord  linear between the published points (UIUC coordinates)
y at x = 5 % chord  upper +3.647 / lower -1.696 % chord  linear between the published points (UIUC coordinates)
y at x = 7.5 % chord  upper +4.455 / lower -1.885 % chord  linear between the published points (UIUC coordinates)
y at x = 10 % chord  upper +5.072 / lower -1.989 % chord  linear between the published points (UIUC coordinates)
y at x = 15 % chord  upper +5.992 / lower -2.047 % chord  linear between the published points (UIUC coordinates)
y at x = 20 % chord  upper +6.618 / lower -1.996 % chord  linear between the published points (UIUC coordinates)
y at x = 25 % chord  upper +7.024 / lower -1.884 % chord  linear between the published points (UIUC coordinates)
y at x = 30 % chord  upper +7.263 / lower -1.732 % chord  linear between the published points (UIUC coordinates)
y at x = 40 % chord  upper +7.351 / lower -1.371 % chord  linear between the published points (UIUC coordinates)
y at x = 50 % chord  upper +7.012 / lower -0.984 % chord  linear between the published points (UIUC coordinates)
y at x = 60 % chord  upper +6.317 / lower -0.605 % chord  linear between the published points (UIUC coordinates)
y at x = 70 % chord  upper +5.299 / lower -0.226 % chord  linear between the published points (UIUC coordinates)
y at x = 80 % chord  upper +3.873 / lower +0.193 % chord  linear between the published points (UIUC coordinates)
y at x = 90 % chord  upper +1.980 / lower +0.397 % chord  linear between the published points (UIUC coordinates)
y at x = 95 % chord  upper +0.963 / lower +0.254 % chord  linear between the published points (UIUC coordinates)
Coordinates source  UIUC Airfoil Coordinates Database: s7075.dat ('S7075 (9%)')  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: s7075.dat ('S7075 (9%)') — web — UIUC Airfoil Coordinates Database, public research data; coordinates are facts, cited and linked, not rehosted — https://m-selig.ae.illinois.edu/ads/coord/s7075.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/s7075-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=s7075-airfoil