Create, edit and analyze airfoil shapes. DesignFOIL is a Windows-based airfoil software tool. It helps you create, modify, and aerodynamically analyze airfoil shapes. It also performs basic wing layout, CAD export, and creates CFD preparation files. Although built for professionals, the user-friendly interface is used by many hobbyists as well. Take the Free Demo for a test flight.

DesignFOIL Features:
1. Quickly analyze airfoils and wing.
2. Generate almost any NACA airfoil with a mouse-click.
3. Import airfoil coordinate files (.dat & .dxf)
4. Import coordinates from DXF files
5. Send all data directly to Excel
6. New MyAirfoils window saves your work from session to session
7. New WingCrafter lets you do wing layout analysis and exports to CAD
8. Send airfoil and wing geometries to Gridgen and CMARC
9. Camber modification tool & simple flap simulator
10. Analyzes quickly
11. Mix & Match tool
12. In-depth help file with aerodynamics and airfoil primers
13. Optimized for wide-screen monitors
14. Workflow pattern optimized to save you time
15. All NACA standard airfoil engines
16. Drag polar display: Classic NACA & Eppler formats
17. Export airfoil shapes directly to popular 3D CAD programs.

What is an airfoil?
In essence, an airfoil is a two-dimensional tear-drop shape that, when extruded into the third dimension and moved through air, generates useful forces or minimizes parasitic forces. As any shape travels through the air, it can generate both a retarding force and a lifting force. Those forces are a function of the cross-sectional shape. For example, if you take the cross-sectional shape of a wing, it would have an elongated teardrop shape. This is called an airfoil. In Europe the spelling is sometimes aerofoil and sometimes it's even called a profile.

DesignFOIL only works for subsonic airfoils. This means they should be round on the nose and sharp at the trailing edge. Sharp-nosed airfoils are for supersonic flight and the DesignFOIL analysis routines are invalid above Mach 0.7.
Limitations:
* Some airfoil generators are disabled in the demo.
* Also, you are limited to 5 saves, prints and exports.

The license of this software is Free Trial Software, the price is $49.00, you can free download and get a free trial.