Compact rotorcraft dual-element spherical elastomeric centrifugal-force bearing assembly

摘要

A rotary system (103, 203, 301) includes a retention member (305) and a flexible yoke (307) having an opening (309) forming a bridge (311). The rotary system is further provided with two bearing assemblies, a first bearing assembly (317) extending through the opening (309) of the yoke and configured to secure a rotor blade (303) to the retention member (305) and a second bearing assembly (319) extending through the opening (309) of the flexible yoke and configured to secure the rotor blade (303) to the bridge (311). The second bearing element includes a bearing element (521) having a first surface forming a spherical contouring and an opposing integral second surface forming a conical contouring (523).