It is amazing how fast wings can be designed with the aid of this new program. The S4WD (Step-Four Wing Designer) is not the adapted version of some CAD program or airfoil editor, but a unique program that has been specifically developed for model building.
In spite of its versatility and huge range of features, the program is easy to use, even for amateurs who have little CAD experience. Operation is as usual, except that the drawing board and pencil have been replaced by the computer screen and mouse.
Views that can be switched on and off enable you to constantly keep an eye on the construction process. As a result, you can rotate, move and scale a wing within a 3D window and so get a clear idea of what the finished product will look like in reality.
If various airfoils are shown for tapered wings, all the intermediate airfoils are modified corrected. Such modifications can even include several tapered wings.
You can also substitute another airfoil later. Simply click with the mouse and all the data are adapted to suit the new airfoil.
This means that a wing can be provided with various airfoils and output within a very short time.
A selection of more than 1100 airfoils is available in the airfoil database created by Professor Selig. The database has been included in the Wing Designer software package.
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