Device for feeding fluid to a hydraulic actuator for controlling the pitch of the fan blades of a two-propeller turboprop

摘要

A device for feeding fluid to a hydraulic actuator for controlling a pitch of fan blades of a two-propeller turboprop, the device including: a fluid manifold secured to a rotor of the turboprop and including a cylindrical portion including at least two fluid-circulation grooves, each presenting an outlet orifice; a fluid-admission support secured to a stationary portion of the turboprop and including a cylindrical portion including at least two distinct fluid passages opening to fluid-admission tubes and each leading radially into one of the fluid-circulation grooves of the manifold; and a tub constrained to rotate with the fluid manifold and including a cylindrical portion including at least two fluid-flow channels, each fed with fluid by a respective one of the outlet orifices of the fluid dispenser, each fluid-flow channel leading to a respective chamber of a control actuator.

主权项

1. A device for feeding fluid to a hydraulic actuator for controlling a pitch of fan blades of a two-propeller turboprop, the device comprising:
a fluid manifold constrained to rotate with a rotor of the turboprop and including a cylindrical portion provided on an outside surface including at least two annular fluid-circulation grooves that are longitudinally spaced apart, each fluid-circulation groove presenting at least one outlet orifice opening out radially to an inside of the cylindrical portion of the fluid manifold; a fluid-admission support secured to a stationary portion of the turboprop and including a cylindrical portion arranged around the cylindrical portion of the fluid manifold, being coaxial therewith and including at least two distinct fluid passages opening out to respective fluid-admission tubes and each leading radially to an inside of the cylindrical portion of the support in a respective one of the fluid-circulation grooves of the manifold; and a tub constrained to rotate with the fluid manifold and including a central portion arranged inside the cylindrical portion of the manifold, being coaxial therewith, and provided on an outside surface and including at least two longitudinal fluid-flow channels each fed with fluid via a respective one of the outlet orifices of the fluid manifold, each fluid-flow channel having a longitudinal end leading to a chamber of a control actuator.