Inboard bearing assemblies having load transfer shoe bolts

A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode, the proprotor system comprising:

• a yoke having a plurality of blade arms including a first blade arm having an inboard pocket with an outboard surface;
• a bearing assembly disposed at least partially within the inboard pocket, the bearing assembly including a shear bearing and a centrifugal force bearing having an integral shoe with an outboard surface;
• an inboard beam disposed at least partially between the centrifugal force bearing and the shear bearing;
• a proprotor blade coupled to the inboard beam;
• and
• a plurality of shoe bolts coupling the integral shoe to the yoke such that the shoe bolts provide centrifugal force load paths between the bearing assembly and the yoke and such that there is a spaced apart relationship between the outboard surface of the integral shoe and the outboard surface of the inboard pocket forming a gap therebetween that prevents centrifugal force load transfer therebetween.

A tiltrotor aircraft having a helicopter flight mode and an airplane flight mode, the tiltrotor aircraft comprising:

• a fuselage;
• a wing extending from the fuselage;
• first and second pylon assemblies coupled to the wing outboard of the fuselage;
• and
• first and second proprotor systems operably associated respectively with the first and second pylon assemblies, each proprotor system including:
• a yoke having a plurality of blade arms including a first blade arm having an inboard pocket with an outboard surface;
• a bearing assembly disposed at least partially within the inboard pocket, the bearing assembly including a shear bearing and a centrifugal force bearing having an integral shoe with an outboard surface;
• an inboard beam disposed at least partially between the centrifugal force bearing and the shear bearing;
• and
• a proprotor blade coupled to the inboard beam;
• wherein the integral shoe is coupled to the yoke such that there is a spaced apart relationship between the outboard surface of the integral shoe and the outboard surface of the pocket forming a gap therebetween that prevents centrifugal force load transfer therebetween.