I converted the prop_design_geo into javascript, and used some factories.
However, absolutely nothing is displayed on the MoI screen, (except alert messages,) so there is some flaw in the javascript...
Either a factory is being (not) created by using non-points, or is being deleted by subsequent re-useage..?

There is the array index to zero issue. The "simple" math gets longer and longer, there are lots of parameters,
different data types....
Have not tried to add on any extra radius yet.

Also the rail points need to be sliced, like LineWeb script, (lengthwise,) into (3) curves.

Other than an alert text message, there is no debug window to display points ????

I think grafting on some of the SavePointFile script could be used to save some x,y,z values to see if they exist and what they are.

So now I am going to start with a small, very simple, display functioning script, and add on small pieces of prop_design_geo, until it breaks...
:-)

Edit: The new limited script will be called AirfoilPoints.js, use one factory, and only the airfoil parameters...