RE: New Wild Hare Sukhoi ready to fly
Pocket hinging is similar to what Comp-arf uses on elevators and rudder, except we do it on ailerons as well.
The fixed surface (e.g. the wing) has small pocket built into the trailing edge. Spaced along inside that pocket are phenolic tabs that act is the fixed part of the hinge. the moving surface (aileron) fits into the pocket with the phenolic tabs going inside the surface through a small slit.
Then a CF tube is inserted through the whole length.
TF