Wing saver
From Dronepedia
A wing saver, like a prop saver, protects against wing breakage at the heavily leveraged interconnection between the wing and the fuselage by allowing the wing to detach if a heavy stress is encountered.
A wing saver, like a prop saver, protects against wing breakage at the heavily leveraged interconnection between the wing and the fuselage by allowing the wing to detach if a heavy stress is encountered.