FOLDED AERODYNAMIC SURFACE Russian patent published in 2008 - IPC B64C3/56 B64C9/34 F42B10/20 

FIELD: aircraft engineering.

SUBSTANCE: aerodynamic surface comprises fixed and hinged parts, pusher sliding inside the hinge holes and helical converter of the pusher translation motion into the rotary motion of the aforesaid aerodynamic surface rotary part, the converter including a helical-surface cylinder and a pin interacting with the said helical surface. The helical converter is furnished with the second cylinder with helical surfaces with direction opposite to that of the fist cylinder and an additional pin interacting with the second cylinder helical surfaces. Both cylinders are arranged aligned and prohibited to reciprocate by a thrust bearing. One of the cylinders is linked with the aerodynamic surface fixed part while the other one with its rotary part. The pusher is arranged inside the cylinders to reciprocate and revolve therein, the pins being fitted on the said pusher to interact with the cylinders helical surfaces via the spherical sleeves. The said helical surfaces of every cylinder are formed by the side surfaces of helical slots made on the opposite sides of the cylinders rings.

EFFECT: smaller weight and sizes.

3 dwg