How composite structures fittnig in airplane?
Assemblies made of composites are typically installed by
fasteners. Composite structures are made of glass fibers or carbon
fibers that have glue that bonds it together in an oven. During
manufacture of the composite structure, a metal strip or a rib or a
bushing will be attached to it that will allow it to be mated to
the airplane or other structure. For example: take a complex
helicopter rotor blade. These are usually made by winding long
fibers along the length of the blade to form the main spar. Then
more fibers are wound around this in a spiral trace from one end to
the other. Over this a skin is added and a leading edge shield is
attached. At the root of the blade, the first fibers that are laid
down are usually wrapped around a bushing that becomes the bolt
hole for attaching it to the main rotor hub. The tip of the blade
is trimmed off and sometimes a tip cap is added.