Mounting plates for rotor hub accessories
AssigneeSikorsky Aircraft Corporation
InventorsStephen Johnston, James Mccollough
Life of this patent
Estimating the term…
Abstract
A rotor hub assembly includes an open rotor hub assembly with an open rotor hub and a mounting plate. The open rotor hub includes an annular base portion with periphery and a plurality of rotary member portions arranged about the annular base portion that each define an aperture for receiving a rotor blade. The mounting plate spans the annular base portion and is coupled to the annular base portion by a resilient member to accommodate radially expansion and contraction of the annular base portion according to loads exerted on the rotor hub by rotor blades seated in the apertures of the rotary member portions.
Claims14
A rotor hub assembly, comprising:
- an open rotor hub including:
- an annular base portion with a periphery;
- and
- a plurality of rotary member portions arranged about the periphery of the annular base portion, each rotary member portion defining an aperture for receiving a rotor blade;
- and
- a mounting plate comprising a central aperture and a resilient member, the mounting plate spanning the annular base portion and coupled to the annular base portion by the resilient member, the resilient member being configured to expand and contract in a radial direction with respect to the central aperture with the annular base portion according to a dynamic loading of the rotor hub.
A rotary wing aircraft, comprising:
- an airframe;
- and
- a rotor system rotatably supported by the airframe for rotation about a rotation axis, the rotor system including:
- a rotor shaft arranged along the rotation axis;
- an open rotor hub connected to the rotor shaft including:
- an annular base portion with a periphery;
- and
- a plurality of rotary member portions arranged about the periphery of the annular base portion, each rotary member portion defining an aperture for receiving a rotor blade;
- and
- a mounting plate comprising a central aperture a plurality of resilient members, the mounting plate spanning the annular base portion and coupled to the annular base portion by a plurality of resilient members, each of the plurality of resilient members being configured to expand and contract in a radial direction with respect to the central aperture with the annular base portion according to the dynamic loading of the rotor hub.
Dependencies are inferred from the claim text.