Torsion box question

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Duncan,

@rtfm

It would be far simpler, and probably more rigid, to fill the internal space with foam sheets. This is how many aircraft wings are constructed (using as little as 3mm plywood skins top and bottom). These wings bear thousands off kilograms when pulling high G forces.

what about this?

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