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Resources:resources

Links:links

UIUC Airfoil Data SiteUIUC Airfoil Data Site

The UIUC Airfoil Data Site is a collection of airfoil coordinates and airfoil related links. The UIUC Airfoil Coordinates Database includes the airfoils, and they cover a wide range of applications from low Reynolds number airfoils for UAVs and model aircraft to jet transports and wind turbines. Originally the site included mostly low Reynolds number airfoils (about 160), but in December 1995 fluentthe site was greatly expanded when David Lednicer of Analytical Methods, Inc. contributed his airfoil collection. This addition brought the total number of airfoils to over 1000. Since this time, the number of airfoils has expanded to include over 1500, and more will be added as they become available. Currently, the airfoils are listed in alphabetical order by the file name, which most often is the airfoil name or close. You can browse the directory, but it is suggested that you use your web-browser "find" button to search for keywords. For questions, see the Airfoils FAQ.

Airfoil FormatAirfoil Format

For reference, the original airfoils in the list and new ones added by Selig are in an x,y format starting from trailing edge, along the upper surface to the leading edge and back around the lower surface to trailing edge (e.g., see E205). Lednicer's contributions are upper surface points leading edge to trailing edge and then lower surface leading edge to trailing edge (e.g., see Clark Y). Some of the airfoils listed do not close at the trailing edge, i.e. the trailing edge has a finite thickness as designed. So far, no multielement airfoils are included in the database.

Airfoil ContributionsAirfoil Contributions

If you would like to contribute airfoils to this site, please email them to m-selig@illinois.edu. Selig's x-y format is preferred. Please include a description of the airfoil and also identify the source. Typically, this description will be reduced to a few words in the database. Valuable contributions would include airfoils that have received some notoriety (good or bad), been used on a particular aircraft and/or been published in some form such as a magazine, conference paper, journal or book. Those contributions thought to be of general interest will be added. Updates to the list will occur infrequently and in batches.

History and CreditsHistory and Credits

Other Airfoil Data and Information SitesOther Airfoil Data and Information Sites

First, in addition to these below links, there are more links included with the airfoil listing page.

The Incomplete Guide to Airfoil Usage
Interested in knowing what airfoils are used on what aircraft? David Lednicer has created here a great compilation of aircraft and the airfoils they used.
Matlab Panel Code w/ UIUC Airfoil Database
A potential flow code that simulates the flow past bodies of arbitrary shape including airfoils. It includes the airfoils in the UIUC Airfoil Database. Looks interesting.
Coordinate Importer for Rhino (CAD/CAM software)
Dale Fugier, one of the developers of Rhinoceros - a NURBS-based 3D modeling system for Windows, has written some simple instruction on how to import airfoil shapes into Rhino. The instructions are here http://wiki.mcneel.com/developer/scriptsamples/airfoil
Another Coordinate Importer/Exporter for Rhino (CAD/CAM software)
Rick Loheed (http://www.islandengineering.com) has written some VBScript for Rhinoceros for importing and exporting airfoil shapes. Drawairfoil.rvb opens a file using the "Selig" format, then fits a through point NURBS curve through the data. The ExportFoilDat.rvb file will 'walk' a NURBS curve, and output the values. The starting point of the curve must of course be the trailing edge and point upward along the upper surface. It is very useful for evaluating airfoils sent in Rhino format, very common to the marine industry. Surfaces may be sectioned to create the curves quite easily. There is a cosine weighted leading/trailing edge scheme in there too, though it may be a bit clunky. XFOIL and XFLR5 did not like it so I took it out.
XFOIL 6.99
XFOIL is an interactive program for the design and analysis of subsonic isolated airfoils. It consists of a collection of menu-driven routines which perform functions such as:
  • Viscous (or inviscid) analysis of an existing airfoil.
  • Multi-point airfoil design by interactive specification of surface speed via mouse cursor.
  • Direct geometric manipulation (flap, camber, contour deformation, etc.).
  • Drag polar calculation with fixed or varying Mach and Reynolds numbers.
  • Writing and reading of airfoil geometry and polar save files.
  • Plotting of geometry, pressure distributions, and polars.
If you are serious about airfoil design and analysis, this is an excellent tool and hard to beat. I use this code routinely for analysis. The software is distributed under the GNU General Public License (GPL) by Mark Drela, MIT and Harold Youngren. The main site includes versions for various platforms.
XFLR5
Andre Deperrois re-write of XFOIL in C++, and it includes additions to account for wings.
Martin Hepperle's Site
Airfoils, winglets, propellers and more for model aircraft. A really nice site!
Shamim Mohamed's Airfoil Plotting Software (plotfoil)
"Plotfoil is a package for plotting airfoil sections to a variety of printers. It consists of three programs: plotfoil plots (in PostScript) airfoil sections (well, actually any section that is not smoothly closed) and allows for spars, sheeting, template sizes; editfoil is a program that allows airfoil sections' camber and thickness to be changed to any desired value; and mixfoils allows different airfoil sections to be hybridized. If you don't have a PostScript printer (or if you want to preview PostScript on your display) you need Ghostscript, from ftp.cs.wisc.edu." [Verbatim from the source.]
Jim Sonnenmeier Airfoil References
A cross-section of available data mostly for the low Reynolds number airfoil regime. This is not an exhaustive list, but it is still very good. Compiled ~1994.
NACA.BAS source code (last update: 8/20/98)
David Lednicer's dave@amiwest.com NACA airfoil coordinate generation program (about NACA.BAS in Basic). A Win95 version of the executable: naca.exe 145 kb . Before you try running the exe file, read this.
PANDA - Program for Analysis and Design of Airfoils (from Desktop Aeronautics, Inc.)
Computes pressures on arbitrary sections from coordinates in an ASCII file. Karman-Tsien compressibility effects. Integral boundary layer calculations for transition location, laminar and turbulent separation, and drag. Design option permits interactive changes in airfoil geometry with recalculation and display of pressures in less than a second. Built-in plotting of Cp or save results to Plot file. Available for MacOS and Windows.
XFOIL Results for Several Flying Wing Airfoils
These results come courtesy of Kelly O'Brien - UIUC AAE undergraduate. 1997
Naval Postgraduate School online airfoil panel code from Prof. Kevin Jones
Online you can input the NACA airfoil parameters (coordinates are not needed), and the code will do the rest to give you the airfoil velocity distribution. A separate version includes all the ~1000 airfoils in the UIUC Airfoil Data Site. An excellent site.
DesignFOIL
An airfoil analysis code from DreeseCODE Software. It uses the UIUC Airfoil Data Site airfoils among others. It also creates output files in various formats.
AeroFoil
A user-friendly airfoil design and analysis program written in Visual Basic. It will generate NACA 4, 5, 6, and 7-digit series airfoils, and import/export airfoil coordinates in dxf format.
Dave Register's Airfoil Plotting Program (freeware)
This is a nice and simple Win95/NT program for plotting airfoils with varying skin thickness and other features. A screen grab is shown here. [I like it - mss.] Download the executable program: AIRFOIL1.EXE (42 kb). 8/6/98
Hanley Innovations
Aerodynamics software from Patrick Hanley includes - VisualFoil, ModelFoil, WingSections, AirfoilBrowser. Most of these packages make use of the UIUC airfoil coordinates database.
FoilSim from NASA Glenn Research Center
A neat NASA web site where you can interactively change an airfoil's camber, angle of attack and other parameters and watch the resulting flow, pressure, and lift. Click on the "FoilSim applet".
CompuFoil ~3D~
Airfoil geometry modification and plotting software for foam cutting and rib layout.
CNC@NET Software for CNC Foam Cutting (in French)
Someone gave me this link and had this to say: "I think some people may be interested in the CNC software developed in France for CNC foam wing cutting. The site is in French, but it is an excellent program, best of all it is free."
Three-Parameter Family of Airfoils
As described by Roger Alperin, his Yet Another Airfoil note "describes a 3-parameter family of airfoil curves based on a geometrical construction using a family of circles."