Just starting toying with a USV based upon a wingsail design.
Based upon hint I found that NACA 4 point is a good start. Especially NACA 00018.
Only just starting out.
It is 120mm cord and sections 100mm in height.
A 16mm OD carbon fibre tube will be used as "mast" (and to provide a means to rotate).
5mm OD carbon fibre tube for booms.
Size, of course, dictated by print volume of my Flashforge Finder.
Sail can then be in increments of 100mm.
People are already downloading
So, I am still working on this as I said. But, since people are already downloading I added a boom lock to the foil with boom socket. So there is an option to glue the boom in or lock it in with a 3M nut/bolt.