Step-over blade-pitch control system

B - Operations – Transporting – 64 – C

Patent

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Details

B64C 27/54 (2006.01) F03B 3/14 (2006.01)

Patent

CA 2665676

A pitch control system for blades on a rotor of an aircraft has a gimballing rotor hub (31) and a plurality of step-over arms (61) connected to the hub and capable of pivoting relative to the hub about a pivot axis. Each of a plurality of pitch links (55) connects one of the step-over arms (61) to a flight control system for pivoting the connected step-over arm (61) about the pivot axis and relative to the hub in response to inputs from the control system. Each of a plurality of step-over links (69) connects one of the step-over arms (61) to one of the blades for rotating the associated blade about the pitch axis in response to pivoting of the associated step-over arm.

La présente invention concerne un système de commande de pas pour les pales de rotor d'un aéronef, comprenant un moyeu rotor suspendu à la Cardan et une pluralité de bras à enjambement reliés au moyeu et pouvant pivoter par rapport au moyeu autour d'un axe de pivotement. Chacune d'une pluralité de biellettes de pas relie l'un des bras à enjambement à un circuit de commande de vol pour faire pivoter le bras à enjambement relié autour de l'axe de pivotement et par rapport au moyeu en réaction à des entrées provenant du circuit de commande. Chacune d'une pluralité de liaisons à enjambement relie l'un des bras à enjambement à l'une des pales pour entraîner en rotation la pale associée autour de l'axe de tangage en réaction au pivotement du bras à enjambement associé.

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