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Eppler E205 airfoil
What is the exact shape of the Eppler E205 airfoil? · Standard part · basis: Coordinates from the UIUC Airfoil Coordinates Database; thickness, camber and section by Xem Studio
Also called: e205, eppler 205, Eppler E205 coordinates, Eppler E205 dat, Eppler E205 STEP, Eppler E205 STL, Eppler E205 profile
Exact dimensions. True size, with no printing tolerance added.
- length
- 100.0 mm
- width
- 20.0 mm
- height
- 10.48 mm
Notes
- 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.
Eppler E205 airfoil size chart
| 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) |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 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 |
| 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 |
Free files
★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json
| eppler-e205-airfoil-section-100mm-chord | Eppler E205 section, 100 mm chord × 20 mm span, 60 points from the published coordinates, single trailing-edge point (scale to your chord) | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=eppler-e205-airfoil
Fits with
Questions
How thick is the Eppler E205?
Maximum thickness 10.48 % of chord at 29.7 % chord: 10.48 mm on a 100 mm chord (computed from the UIUC coordinates).
How much camber does the Eppler E205 have?
Maximum camber 3.01 % of chord at 34.1 % chord (computed from the UIUC coordinates).
How do I use it for my wing?
Scale the 100 mm section to your chord (e.g. 180 mm chord = 180 % scale), then extrude or loft between root and tip sections. For a tapered wing, scale a root and a tip copy and loft between them.