Can control surfaces for slow aircraft be 3D printed or even just printed as a core and then wrapped in fibreglass or carbon fibre?
I understand that 3D printing of wings, etc. is pretty common in the RC Aircraft world.
What about for slow flying aircraft such as Ultralights, etc.
In Rutan's book, "Moldless Composite Sandwich Aircraft Construction", Rutan strictly notes that only certain foams can be used as a core for structural components. Other foams are just for shaping of non-structural components such as interior panels, etc.
I assume there are certain engineering/material properties of the structural components that need to be met such as flexibility, no delamination, no structural degradation, high number of loading cycles, etc.
The question is, do any 3D printed materials meet these engineering/material properties.
Any help would be appreciated.