I'm looking at Grob-103 Heim style bearing sockets for root rib lift pins to keep bending moments through the spar.
I never liked the idea of hard points without smooth stiffness transitions to take up the lift pin lift-shear loads, torsion, drag, V-n-pointA anti-drag, ground drag loads,..
Does anyone know the ply layup transition used on any modern gliders from the beefy root ribs to wings skins?
Do most just rely on structural adhesive/secondary bond glue area plus a few fillet strips to the wing skins with epoxy-flox, hysol 9430, Methyl Acrylates?
I never liked the idea of hard points without smooth stiffness transitions to take up the lift pin lift-shear loads, torsion, drag, V-n-pointA anti-drag, ground drag loads,..
Does anyone know the ply layup transition used on any modern gliders from the beefy root ribs to wings skins?
Do most just rely on structural adhesive/secondary bond glue area plus a few fillet strips to the wing skins with epoxy-flox, hysol 9430, Methyl Acrylates?