公开(公告)号：US11767006B2

公开(公告)日：2023-09-26

申请号：US17677721

申请日：2022-02-22

Applicant: Bell Textron Inc.

Inventor： Andrew Ryan Maresh ,  John Richard McCullough ,  Robert Patrick Wardlaw ,  Paul K. Oldroyd

IPC: B60V1/14 ,  B64C11/00 ,  B64C11/06

CPC classification number: B60V1/14 ,  B64C11/001 ,  B64C11/06

Abstract: A rotor assembly for generating thrust for a vehicle. The rotor assembly includes a rotor hub and a plurality of rotor blade assemblies coupled to the rotor hub. Each rotor blade assembly includes a metallic bearing race, a composite rotor blade and a metallic coupling assembly. The composite rotor blade has a root section with a radially outwardly tapered outer surface. The metallic coupling assembly has a radially inwardly tapered inner surface that receives the radially outwardly tapered outer surface of the root section of the rotor blade therein to provide a centrifugal force seat for the rotor blade. The coupling assembly includes at least two circumferentially distributed coupling members. The coupling assembly is configured to couple the rotor blade to the bearing race and to provide a centrifugal force load path therebetween.

公开(公告)号：US20210078699A1

公开(公告)日：2021-03-18

申请号：US16575329

申请日：2019-09-18

Applicant: Bell Textron Inc.

Inventor： Paul Branson Sherrill ,  Robert Patrick Wardlaw ,  Robert Alan Self

IPC: B64C27/473 ,  B64C27/00 ,  F01D5/28 ,  B29D99/00

Abstract: In an implementation, a rotor blade for a helicopter may include an outer layer. The outer layer may have a leading edge region and a trailing edge region and may define a cavity. The leading edge region may include a first shape at least partially corresponding with an airfoil, e.g., a wing. An insert may be included within the cavity and be encompassed thereby. The insert may include a shape that substantially corresponds with the first shape, e.g., the insert may substantially correspond with a leading edge of an airfoil. The insert may have a plurality of weight shot each of which may be surrounded by a binding agent.