Bearingless gimbaled rotor hubs and swashplates

An aircraft gimbal comprising:

• an integral trunnion comprising:
• an annular body portion defining a central splined central driveshaft or mast coupling bore configured to mate with a rotor driveshaft or mast end and spline the integral trunnion to the mast or driveshaft for movement along the mast or driveshaft, perpendicular to a single plane;
• and
• a plurality of opposing integral trunnion drive pin portions extending from the annular body portion;
• a pair of blocks configured to be secured to, or is an integral part of, a rotor yoke;
• an integral coupling defining:
• opposing trunnion pin receptive bores;
• and
• a plurality of integral flanged wear sleeves, one integral flanged wear sleeve disposed in each of the integral coupling trunnion pin receptive bores, over a respective trunnion drive pin, rotatably retaining the respective trunnion drive pin with respect to the respective integral coupling trunnion pin receptive bore, each integral flanged wear sleeve comprising:
• a right circular hollow cylindrical body portion interiorly sized to be retained on one of the trunnion drive pin portions of the trunnion and externally sized to be rotatably retained in one of the pillow block trunnion pin receptive bores and/or one of the drive coupling trunnion pin receptive bores;
• and
• a flange portion radiating from an outer end of the cylindrical body portion, the flange portion having a diameter larger than a diameter of the pillow block trunnion pin receptive bores and the drive coupling trunnion pin receptive bores, bearing on a face of a respective pillow block or a respective face of the drive coupling.

A proprotor gimbal, comprising:

• a yoke configured for mounting a plurality of proprotors thereto;
• a pair of blocks attached to the yoke;
• an integral coupling having a pair of opposed bores, each with a flanged wear sleeve, the integral coupling rotatably pinned to the pair of blocks;
• and,
• an integral trunnion comprising an annular body defining an integral internally splined mast bore configured to mate with a rotor mast end and spline the integral trunnion to the mast or driveshaft for movement along the mast or driveshaft, perpendicular to a single plane, and defining a pair of opposed trunnion pin portions extending outwardly from the annular body, each trunnion pin extending into one of the flanged wear sleeves in the integral coupling opposed bores;
• and,
• each flanged wear sleeve comprising a right circular hollow cylindrical body portion interiorly sized to be retained on one of the trunnion pins and externally sized to be rotatably retained in one of the integral coupling opposed bores.