Patent attributes
A solid lubricant-carrying gear which is lubricated by a liquid lubricant communicated to the gear by a primary lubrication system includes a gear body and a solid lubricant body. The gear body is arranged along a rotation axis and has a first surface, an axially opposite second surface, and an outward radial face extending about the rotation axis having gear teeth and lubricant directing features. The solid lubricant body is coupled to the gear body and includes a lubricant which melts at a melting temperature above that of the liquid lubricant to provide secondary lubrication to the gear via the lubricant directing features. Gearboxes, aircraft having transmissions employing solid lubricant-carrying gears, and methods of lubricating gears are also described.
