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Machine translation
1. (WO1980001675) TAIL ROTOR CONTROL CABLE-PYLON FOLD ACCOMMODATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001675    International Application No.:    PCT/US1980/000052
Publication Date: 21.08.1980 International Filing Date: 21.01.1980
IPC:
B64C 27/04 (2006.01), B64C 27/78 (2006.01)
Applicants:
Inventors:
Priority Data:
12548 15.02.1979 US
Title (EN) TAIL ROTOR CONTROL CABLE-PYLON FOLD ACCOMMODATION
(FR) DISPOSITIF DE REPLIAGE PAR CABLE DU PYLONE DE ROTOR ARRIERE
Abstract: front page image
(EN)A helicopter has main rotor blades (22) foldable over its tail cone (12) and a tail rotor pylon (14) which is foldable about a tail cone vertical hinge (24) from its fore-and-aft flight position through an angle approaching 180 to lie alongside the tail cone. An arrangement to allow the tail rotor pitch controls to accomodate the folding of the tail rotor pylon comprises a tail rotor pitch control mechanism (26) including a cable (28) which extends across the foldable hinged members, direction change pulleys (30, 32, 34) for the cable and an improved 4- bar linkage system which controls the movement of the pulleys within a small envelope circle and maintains a constant tension on the cable throughout the full fold cycle.
(FR)Un helicoptere possede des pales du rotor principal (22) repliables sur son cone arriere (12) et un pylone de rotor arriere (14) qui est repliable autour d"une charniere verticale du cone arriere (24) a partir de sa position de vol avant-arriere en faisant un angle approchant 180 pour reposer le long du cone arriere. Un dispositif permettant aux commandes du pas du rotor arriere d"ajuster le repliage du pilone de rotor arriere comprend un mecanisme de commande du pas du rotor arriere (26) comprenant un cable (28) qui s"etend au travers des organes articules repliables, des poulies de renvoi (30, 32, 34) pour le cable et un systeme de chainons ameliore a quatre barres qui commande le mouvement des poulies dans un petit cercle et maintient une tension constante sur le cable pendant tout le cycle de repliage.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)