Xem Studiomeasured geometryLibrary › Airfoils › Other airfoils ·
MH 45 airfoil
What is the exact shape of the MH 45 airfoil? · Standard part · basis: Coordinates from the UIUC Airfoil Coordinates Database; thickness, camber and section by Xem Studio
Also called: mh45, mh 45, hepperle mh45, MH 45 coordinates, MH 45 dat, MH 45 STEP, MH 45 STL, MH 45 profile
Exact dimensions. True size, with no printing tolerance added.
- length
- 100.0 mm
- width
- 20.0 mm
- height
- 9.85 mm
Notes
- MH 45: Martin Hepperle (MH series). Maximum thickness 9.85 % of chord at 27.6 % chord; maximum camber 1.71 % of chord at 32.1 % chord.
- Coordinates from the UIUC Airfoil Coordinates Database (M. Selig, UIUC Applied Aerodynamics Group), file mh45.dat, titled 'MH 45 9.85%'. 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.
MH 45 airfoil size chart
| parameter | value | source |
|---|---|---|
| Max thickness | 9.85 % chord at 27.6 % chord | computed from the UIUC coordinates |
| Max camber | 1.71 % chord at 32.1 % chord | computed from the UIUC coordinates |
| Published points | 67 (34 upper, 34 lower, shared leading edge) | UIUC coordinates |
| Trailing edge as published | sharp (closed) | UIUC coordinates |
| y at x = 1.25 % chord | upper +1.753 / lower -0.976 % chord | linear between the published points (UIUC coordinates) |
| y at x = 2.5 % chord | upper +2.587 / lower -1.444 % chord | linear between the published points (UIUC coordinates) |
| y at x = 5 % chord | upper +3.711 / lower -2.075 % chord | linear between the published points (UIUC coordinates) |
| y at x = 7.5 % chord | upper +4.477 / lower -2.503 % chord | linear between the published points (UIUC coordinates) |
| y at x = 10 % chord | upper +5.058 / lower -2.797 % chord | linear between the published points (UIUC coordinates) |
| y at x = 15 % chord | upper +5.852 / lower -3.146 % chord | linear between the published points (UIUC coordinates) |
| y at x = 20 % chord | upper +6.319 / lower -3.272 % chord | linear between the published points (UIUC coordinates) |
| y at x = 25 % chord | upper +6.540 / lower -3.276 % chord | linear between the published points (UIUC coordinates) |
| y at x = 30 % chord | upper +6.581 / lower -3.199 % chord | linear between the published points (UIUC coordinates) |
| y at x = 40 % chord | upper +6.250 / lower -2.889 % chord | linear between the published points (UIUC coordinates) |
| y at x = 50 % chord | upper +5.495 / lower -2.466 % chord | linear between the published points (UIUC coordinates) |
| y at x = 60 % chord | upper +4.390 / lower -1.999 % chord | linear between the published points (UIUC coordinates) |
| y at x = 70 % chord | upper +3.033 / lower -1.525 % chord | linear between the published points (UIUC coordinates) |
| y at x = 80 % chord | upper +1.637 / lower -1.053 % chord | linear between the published points (UIUC coordinates) |
| y at x = 90 % chord | upper +0.513 / lower -0.586 % chord | linear between the published points (UIUC coordinates) |
| y at x = 95 % chord | upper +0.123 / lower -0.343 % chord | linear between the published points (UIUC coordinates) |
| Coordinates source | UIUC Airfoil Coordinates Database: mh45.dat ('MH 45 9.85%') | 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: mh45.dat ('MH 45 9.85%') | 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: Martin Hepperle (MH 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
| mh45-airfoil-section-100mm-chord | MH 45 section, 100 mm chord × 20 mm span, 66 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=mh45-airfoil
Fits with
Questions
How thick is the MH 45?
Maximum thickness 9.85 % of chord at 27.6 % chord: 9.85 mm on a 100 mm chord (computed from the UIUC coordinates).
How much camber does the MH 45 have?
Maximum camber 1.71 % of chord at 32.1 % 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.