RG15 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/rg15-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 8.92
- RG15: Rolf Girsberger (RG series). Maximum thickness 8.92 % of chord at 30.2 % chord; maximum camber 1.76 % of chord at 39.7 % chord.
- Coordinates from the UIUC Airfoil Coordinates Database (M. Selig, UIUC Applied Aerodynamics Group), file rg15.dat, titled 'RG-15 8.9%'. 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  8.92 % chord at 30.2 % chord  computed from the UIUC coordinates
Max camber  1.76 % chord at 39.7 % chord  computed from the UIUC coordinates
Published points  62 (32 upper, 31 lower, shared leading edge)  UIUC coordinates
Trailing edge as published  sharp (closed)  UIUC coordinates
y at x = 1.25 % chord  upper +1.414 / lower -1.007 % chord  linear between the published points (UIUC coordinates)
y at x = 2.5 % chord  upper +2.128 / lower -1.385 % chord  linear between the published points (UIUC coordinates)
y at x = 5 % chord  upper +3.113 / lower -1.863 % chord  linear between the published points (UIUC coordinates)
y at x = 7.5 % chord  upper +3.825 / lower -2.165 % chord  linear between the published points (UIUC coordinates)
y at x = 10 % chord  upper +4.371 / lower -2.378 % chord  linear between the published points (UIUC coordinates)
y at x = 15 % chord  upper +5.166 / lower -2.620 % chord  linear between the published points (UIUC coordinates)
y at x = 20 % chord  upper +5.675 / lower -2.743 % chord  linear between the published points (UIUC coordinates)
y at x = 25 % chord  upper +5.992 / lower -2.782 % chord  linear between the published points (UIUC coordinates)
y at x = 30 % chord  upper +6.155 / lower -2.763 % chord  linear between the published points (UIUC coordinates)
y at x = 40 % chord  upper +6.114 / lower -2.595 % chord  linear between the published points (UIUC coordinates)
y at x = 50 % chord  upper +5.709 / lower -2.287 % chord  linear between the published points (UIUC coordinates)
y at x = 60 % chord  upper +5.020 / lower -1.784 % chord  linear between the published points (UIUC coordinates)
y at x = 70 % chord  upper +4.097 / lower -1.102 % chord  linear between the published points (UIUC coordinates)
y at x = 80 % chord  upper +2.971 / lower -0.448 % chord  linear between the published points (UIUC coordinates)
y at x = 90 % chord  upper +1.657 / lower +0.007 % chord  linear between the published points (UIUC coordinates)
y at x = 95 % chord  upper +0.904 / lower +0.101 % chord  linear between the published points (UIUC coordinates)
Coordinates source  UIUC Airfoil Coordinates Database: rg15.dat ('RG-15 8.9%')  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: rg15.dat ('RG-15 8.9%') — web — UIUC Airfoil Coordinates Database, public research data; coordinates are facts, cited and linked, not rehosted — https://m-selig.ae.illinois.edu/ads/coord/rg15.dat
- UIUC Applied Aerodynamics Group (M. Selig): UIUC Airfoil Coordinates Database (original: Rolf Girsberger (RG 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/rg15-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=rg15-airfoil