FOLDING AERODYNAMIC SURFACE Russian patent published in 2009 - IPC B64C3/56 B64C9/34 

FIELD: aeronautical engineering.

SUBSTANCE: invention relates to the designs of folding aerodynamic surfaces of pilotless flight vehicles. The proposed device comprises fixed (1) and rotary (2) part hinged thereon, pushrod sliding inside the hinge holes and a helical converter of the pushrod translation into rotation of the rotary part of the said aerodynamic surface including a cylinder with helical surfaces and a pin interacting them. The helical converter is furnished with the second cylinder with the helical surfaces direction other than that of the fist cylinder helical surfaces. The cylinders are arranged concentrically relative to each other. Note here that one of the cylinders is connected to the aerodynamic surface fixed part while the other one is jointed to the rotary part. The pushrod is arranged inside the inner cylinder to reciprocate and rotate therein. The pin is fitted on the said pushrod to interact with helical surfaces of both cylinders. Note that helical surfaces of each cylinder are formed by side surfaces of helical slots (5,6) made on diametrically opposite side of the cylinders shells.

EFFECT: invention allows reducing weight and overall sizes of folding aerodynamic surface.

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