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MidAtlanticFoil said..
At the very center, the thickness is 27MM (due to fuselage), but it quickly drops off to around 22MM at the middle of the span between center and wingtip.
Interesting tidbit from the latest Progression Podcast with KDW. They were talking about fuselage lengths and he said it really depends on the front wing:
"The Armstrong, their foil section is really close to a flying wing, or a hang-glider, and those don't have tail wings. So, the section they use is really pitch stable and has a lower pitching moment, so as you speed up, it doesn't want to pitch down as much as much as something like an Albatros or Hyper would."
-KDW
Interesting about the Armstrong being designed like a Hang glider wing which doesn't have a tail, I thought the tail wings on the Armstrong foils were much smaller than other brands so that makes sense.
I was a hangliding and paragliding instructor for 10 years in the 90s and Rob Whittall was a legend in wing designs
for hangliders and paragliders back then ,so it doesn't surprise me that he is designing great foil wings as well.