… concerning CurvesWB: https://forum.freecadweb.org/viewtopic. ... 30#p280130
Not only aeroplane designers are happy about Gordon Surface, there are other "flying vehicles".
Lately I saw a picture of snow kiters and their "sails". The kite surfers do it also on water (fluid).
They have special kites with inflated tubes as leading edge and ribs,
stabilizing the airfoil and preventing sinking.
To model such kind of paraglider gordon surface works well.
The shape is done by combined_projection_curves and some rib sketches.
The leading edge needs a splitting or a new construction to get 4 outer gordon edges.
Its done either by Split_Curve or by Discretize_Edge and reconstruction via Interpolation_Curve.
The basic master model is small, but when gordon and sweeps are included it gets over 1 MB.