Tail rotor control cable-pylon fold accommodation

Details Tail rotor control cable-pylon fold accommodation Tail rotor control cable-pylon fold accommodation

B - Operations, Transporting

64

C

244/17

B64C 27/04 (2006.01) B64C 27/78 (2006.01)

Patent

CA 1130770

TAIL ROTOR CONTROL CABLE- PYLON FOLD ACCOMMODATION ABSTRACT OF THE DISCLOSURE A helicopter has main rotor blades foldable over its tail cone and a tail rotor pylon which is foldable about a tail cone vertical hinge from its fore-and-aft flight position through an angle approaching 180° to lie alongside the tail cone. Tail rotor pitch control mechanism includes a cable which extends across the foldable hinged members, direction change pulleys for the cable and an improved 4-bar linkage system which controls the movement of said pulleys within a small envelope circle and maintains a constant tension on the -able throughout the full fold cycle. -1-

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