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5mm radialy, axial expansion can be ignored. Yes the tanks will need to be able to bend with the wing.

Some if not all, additional structures can be added i.e. spars. But, main load that concerns is the bending moment. Mainly radial direction, due to the pressure swing. What i meant by ease of disassembly is such that the tanks can be removed from the wings from the joints/connections point of...

The tanks are are made with composites, ca. 10mm thick.

So, the tanks are made with composites, and the H2 are non cryogenic, so insulation and stuff are not required. I‘m expecting maximum wing loading around 6750 N/m^2 including safety factor. Honestly, the tanks are someone else problem (it's already been determined), all i need to do is to think...

Its pressurised gas (H2) @ 350 bar.

The idea is that the tanks act so like a spar, even when empty. If the foam scrapes the tanks, but doesn't damage or cause structural issues, then it should be fine. What kind of foam are you reffering to? Thank you though for the insight, i'll take it into consideration. :)

Hello, I'm currenly working on a small project, i'm trying to figure out a mounting design for the tanks (pressure vessel) in an aircraft wings (to the ribs or skin), so that the pressure tanks could take some of the aerodynamic loads. The problem for me is the requirement, that the tanks could...