Composite rotor system using two race track style cantilevered yokes

摘要

A hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast adapter. The mast adapter is configured to transfer rotation from a rotor mast to the hub system to rotate the hub system about a central axis of rotation. The mast adapter is further configured to support the stacked yoke such that each yoke in the stacked yoke is configured to accommodate at least some amount of rotation about an axis that is perpendicular to or about perpendicular to the central axis of rotation.

主权项

1. A hub system comprising:
at least one race-track style yoke having an annular shape and comprising a mast section, an outboard section, and a flexure section extending between the mast section and the outboard section, the at least one race-track style yoke comprising a first race-track style yoke and a second race-track style yoke; at least one shear bearing; and at least one mast adapter comprising a plurality of mast adapter arms configured to attach to and support the at least one race-track style yoke and directly attach to and support the at least one shear bearing, the plurality of mast adapter arms comprising a first set of opposing arms extending from an intermediate member of the mast adapter and a second set of opposing arms extending from the intermediate member, the intermediate member comprising a cylindrical body having a central mast aperture configured to attach to a rotor mast, the first set of opposing arms attached to the intermediate member at a first end of the intermediate member, and the second set of opposing arms attached to the intermediate member at a second end of the intermediate member such that the first set of opposing arms is physically separate from the second set of opposing arms, the first set of opposing arms connecting to the first race track style yoke, and the second set of opposing arms connecting to the second race track style yoke; wherein the flexure section is free from direct contact from the at least one mast adapter; and wherein the at least one race-track style yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing.