Eppler E205 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/eppler-e205-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 10.48
- Eppler E205: Richard Eppler (Eppler airfoil series). Maximum thickness 10.48 % of chord at 29.7 % chord; maximum camber 3.01 % of chord at 34.1 % chord.
- Coordinates from the UIUC Airfoil Coordinates Database (M. Selig, UIUC Applied Aerodynamics Group), file e205.dat, titled 'E205 (10.48%)'. 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  10.48 % chord at 29.7 % chord  computed from the UIUC coordinates
Max camber  3.01 % chord at 34.1 % chord  computed from the UIUC coordinates
Published points  61 (32 upper, 30 lower, shared leading edge)  UIUC coordinates
Trailing edge as published  sharp (closed)  UIUC coordinates
y at x = 1.25 % chord  upper +1.701 / lower -1.047 % chord  linear between the published points (UIUC coordinates)
y at x = 2.5 % chord  upper +2.575 / lower -1.435 % chord  linear between the published points (UIUC coordinates)
y at x = 5 % chord  upper +3.810 / lower -1.859 % chord  linear between the published points (UIUC coordinates)
y at x = 7.5 % chord  upper +4.746 / lower -2.111 % chord  linear between the published points (UIUC coordinates)
y at x = 10 % chord  upper +5.492 / lower -2.270 % chord  linear between the published points (UIUC coordinates)
y at x = 15 % chord  upper +6.629 / lower -2.411 % chord  linear between the published points (UIUC coordinates)
y at x = 20 % chord  upper +7.407 / lower -2.435 % chord  linear between the published points (UIUC coordinates)
y at x = 25 % chord  upper +7.925 / lower -2.387 % chord  linear between the published points (UIUC coordinates)
y at x = 30 % chord  upper +8.180 / lower -2.294 % chord  linear between the published points (UIUC coordinates)
y at x = 40 % chord  upper +7.998 / lower -2.032 % chord  linear between the published points (UIUC coordinates)
y at x = 50 % chord  upper +7.146 / lower -1.726 % chord  linear between the published points (UIUC coordinates)
y at x = 60 % chord  upper +5.905 / lower -1.407 % chord  linear between the published points (UIUC coordinates)
y at x = 70 % chord  upper +4.503 / lower -1.091 % chord  linear between the published points (UIUC coordinates)
y at x = 80 % chord  upper +3.036 / lower -0.781 % chord  linear between the published points (UIUC coordinates)
y at x = 90 % chord  upper +1.543 / lower -0.461 % chord  linear between the published points (UIUC coordinates)
y at x = 95 % chord  upper +0.764 / lower -0.244 % chord  linear between the published points (UIUC coordinates)
Coordinates source  UIUC Airfoil Coordinates Database: e205.dat ('E205 (10.48%)')  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: e205.dat ('E205 (10.48%)') — web — UIUC Airfoil Coordinates Database, public research data; coordinates are facts, cited and linked, not rehosted — https://m-selig.ae.illinois.edu/ads/coord/e205.dat
- UIUC Applied Aerodynamics Group (M. Selig): UIUC Airfoil Coordinates Database (original: Richard Eppler (Eppler airfoil 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/eppler-e205-airfoil/index.json
API: https://xemstudio.com/api/geometry?object=eppler-e205-airfoil