The present invention relates to a mechanism for changing the pitch of a propeller of a turbine engine, the mechanism comprising an electrohydraulic actuator that comprises: —an electric machine comprising a rotatable actuator shaft; —a pumping assembly comprising two hydraulic axial piston pumps, each comprising: o a barrel housed in a cavity filled with hydraulic fluid; o a set of cylinders formed in the barrel, each cylinder housing a translatable piston and comprising an inlet port and a delivery port; o and an inclined plate, the plate of a first pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a first direction, and the plate of a second pump comprising a crescent-shaped inlet port for circulating the hydraulic fluid when the plate is rotated in a second direction.
CALAGE DE PAS ÉLECTROHYDRAULIQUE À POMPE RÉVERSIBLE
ELECTROHYDRAULIC PITCH SETTING WITH REVERSIBLE PUMP
ELEKTROHYDRAULISCHE BLATTVERSTELLUNG MIT UMKEHRBARER PUMPE
2024-04-10
Patent
Electronic Resource
French
European Patent Office | 2023
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