Rotor hub mounted actuator for controlling a blade on a...

B - Operations – Transporting – 64 – C

Patent

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Details

B64C 27/64 (2006.01) B64C 27/605 (2006.01) B64C 27/615 (2006.01) B64C 27/68 (2006.01) B64C 27/72 (2006.01)

Patent

CA 2421853

A hub mounted actuation system (20) for providing control of a portion of a rotor blade, on a rotorcraft. The rotor blade is attached to a rotor shaft (104) that rotates with respect to an airframe. The hub mounted actuation system includes a stationary support (106) mounted to the airframe and a rotary support (110) attached to the rotor shaft for concomitant rotation therewith. At least one hub actuator (112) rotates in combination with the rotor blade and includes a piston (114) which is slidable within a housing (116). The piston and housing define a pressure chamber within the actuator which contains a fluid to be pressurized. A displacement control device is disposed between the stationary support and the rotary support for controlling movement of the piston within the housing. A linkage (26) connects the hub actuator to the portion of the blade to be controlled. The linkage is adapted to displace the blade portion as a function of the movement of the piston within the housing.

L'invention concerne un système d'actionnement (20) d'un moyeu monté destiné à commander un partie d'une ailette de rotor, sur un giravion. L'ailette de rotor est fixée à un arbre rotor (104) qui tourne par rapport à une cellule. Le système d'actionnement de moyeu monté comprend un support fixe (106) monté sur la cellule et un support rotatif (110) fixé à l'arbre rotor pour une rotation concomitante avec ce dernier. Au moins un actionneur de moyeu (112) tourne avec l'ailette de rotor et comprend un piston (114) pouvant être coulissé dans un logement (116). Le piston et le logement définissent une chambre à pression dans l'actionneur qui contient un fluide à pressuriser. Un dispositif de commande de déplacement est placé entre le support fixe et le support rotatif afin de commande le mouvement du piston dans le logement. Une liaison (26) relie l'actionneur de moyeu à la partie d'ailette à commander. Cette liaison permet de déplacer la partie d'ailette comme une fonction du mouvement du piston dans le logement.

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