Quote:
Of course it's fabricable. The question is more related to what is the good shape to fabricate.
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Thanks for all details. I guess 13% penalty in nothing and don't worth the extra fabricating effort.
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Your choice of materials and methods will determine how achievable a given shape is. aerohead's 80mm suggestion apparently is for the longitudinal edges. Were you to obtain a 6" aluminum irrigation pipe and cut it in thirds lengthwise, those rolled edges could become a cage with gaps to fill.
If you curve what have become long strips the angle widens from 120° toward what you require for tumblehome.
How tall are you? That would be a good starting point.
https://www.thesamba.com/vw/gallery/pix/1134951.jpg
I don't know or care about Solidworks. Blender (currently 4.01) would allow you to import that JPG into an image plane so you could use NURBs Bézier curves or simple polygon extrusions for modeling. There is a simulation node editor in recent versions for CFD, but that [aways] beyond my pay grade.
Simplest: Two quadrilaterals and two triangles -- lots of tumblehome like the Cybertruck.
Next: Rolled edges with crescent and hourglass shapes to fill.
Most complex: Full compound curved, with cedar strip or stitch and glue canoe technique.