Fan blade retention and variable pitch system

Details Fan blade retention and variable pitch system Fan blade retention and variable pitch system

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/36 (2006.01) F01D 17/16 (2006.01) F02C 9/16 (2006.01)

Patent

CA 2724083

A system (10) for providing variable pitch to a rotor blade (16) of an aircraft engine includes a rotatable hub (34); at least one blade mounted on the rotatable hub; a gear mechanism operably connected to the rotatable hub; a timing ring (46) rotatably and operably connected to the gear mechanism; and a pitch arm (74) operably connecting the timing ring and the at least one blade mounted on the rotatable hub. In the operation of the system, the gear mechanism facilitates the rotation of the timing ring to vary the pitch of the at least one blade mounted on the rotatable hub.

Un système permettant dassurer un pas variable à une pale de rotor dun moteur daéronef comprend un moyeu rotatif; une ou plusieurs pales montées sur le moyeu rotatif; un mécanisme dengrenage relié fonctionnellement au moyeu rotatif; un anneau de réglage de pas relié fonctionnellement et en rotation au mécanisme d'engrenage; et un levier de commande de pas reliant fonctionnellement lanneau de réglage de pas et la/les pales montées sur le moyeu rotatif. Lors du fonctionnement du système, le mécanisme dengrenage facilite la rotation de lanneau de réglage de pas pour modifier le pas de la/des pales montées sur le moyeu rotatif.

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