Patent ID: 8991748
Filing Date: 2015-03-31
Classification: B64C,F16C

Abstract:
1. A rotor system comprising a mast adapted to mount to an airframe of a rotorcraft; a shroud surrounding the mast, the mast and shroud defining an air channel; a hub mounted to the mast and defining a hub cavity in fluid communication with the air channel; a plurality of blades each defining a blade duct, the plurality of blades being coupled to the hub having the blade ducts thereof in fluid communication with the hub cavity; a plurality of blade actuators; a swashplate engaging the mast; a plurality of actuator rods coupling the plurality of actuators to the swashplate; a plurality of pitch control rods coupling the swashplate to the plurality of blades; and a layer of solid lubricant, fused to at least one surface, the at least one surface located at at least one of an interface between the swashplate and the mast, an interface between the swashplate and the plurality of actuator rods, an interface between the swashplate and the plurality of pitch control rods, and an interface between the plurality of pitch control rods and the plurality of blades; a compressed air source in fluid communication with the air channel; wherein the swashplate is positioned within the air channel and the plurality of pitch control rods extend from the swashplate into the hub cavity such that the swashplate and pitch control rods are exposed to air flow from the compressed air source through the air channel and hub cavity.