公开(公告)号：US20210070432A1

公开(公告)日：2021-03-11

申请号：US16561516

申请日：2019-09-05

Applicant: Bell Textron Inc.

Inventor： Andrew Ryan Maresh ,  Chyausong Tzeng ,  Russell Mueller

IPC: B64C27/35 ,  F01D25/16 ,  F16C17/03

Abstract: Embodiments are directed to a double Hooke's joint gimbal in a rotor system. An upper Hooke's joint has four arms extending radially outward to define first and second axes, and a lower Hooke's joint has four arms extending radially outward to define third and fourth axes. A pair of connectors couple the upper Hooke's joint and the lower Hooke's joint. A first set of bearings are positioned between arms on the upper and lower Hooke's joints and the connectors. The first set of bearings comprise an elastomer, such as elastomeric journal bearings. The upper Hooke's joint is coupled to a yoke and rotor blades by a driver assembly that allows rotor blade flapping. The lower Hooke's joint is coupled to and driven by a mast. A spherical bearing allows the upper Hooke's joint to move laterally along the mast.

公开(公告)号：US12043375B2

公开(公告)日：2024-07-23

申请号：US17547578

申请日：2021-12-10

Applicant: Bell Textron Inc.

Inventor： Colton Gilliland ,  Russell Mueller

IPC: F16C35/063 ,  B64C27/12 ,  B64C27/32

CPC classification number: B64C27/32 ,  B64C27/12

Abstract: A bearing restraint, for use on a rotorcraft with a rotor mast and bearing assembly. The bearing restraint interfacing with a mast groove along the rotor mast to longitudinally restrain the bearing assembly. The bearing restraint includes a pilot ring, groove collar, and retaining ring.

公开(公告)号：US20230182896A1

公开(公告)日：2023-06-15

申请号：US17547578

申请日：2021-12-10

Applicant: Bell Textron Inc.

Inventor： Colton Gilliland ,  Russell Mueller

IPC: B64C27/32 ,  B64C27/12

CPC classification number: B64C27/32 ,  B64C27/12

Abstract: A bearing restraint, for use on a rotorcraft with a rotor mast and bearing assembly. The bearing restraint interfacing with a mast groove along the rotor mast to longitudinally restrain the bearing assembly. The bearing restraint includes a pilot ring, groove collar, and retaining ring.

公开(公告)号：US20210094679A1

公开(公告)日：2021-04-01

申请号：US16588843

申请日：2019-09-30

Applicant: Bell Textron Inc.

Inventor： Colton Gilliland ,  Tyson Henry ,  Russell Mueller

IPC: B64C27/32 ,  F01D25/16 ,  F16H1/28

Abstract: Embodiments are directed to a rotor mast for an aircraft comprising a shaft portion, a carrier portion having a plate and a web, and frame segments that separate the web from the plate at a fixed distance. The shaft portion, the plate, the web, and the frame segments are as single component. A plurality of first holes are formed in the plate, and a plurality of second holes are formed in the web. Pairs of the first and second holes are aligned. Posts are mounted between each pair of first and second holes. Pinion gears are mounted on the posts. Roller bearings are mounted between the posts and pinion gears. An open region of the web is configured to allow a sun gear to mesh with the pinion gears.

公开(公告)号：US11136116B2

公开(公告)日：2021-10-05

申请号：US16561516

申请日：2019-09-05

Applicant: Bell Textron Inc.

Inventor： Andrew Ryan Maresh ,  Chyausong Tzeng ,  Russell Mueller

IPC: B64C27/41 ,  B64C27/35 ,  B64C27/12

Abstract: Embodiments are directed to a double Hooke's joint gimbal in a rotor system. An upper Hooke's joint has four arms extending radially outward to define first and second axes, and a lower Hooke's joint has four arms extending radially outward to define third and fourth axes. A pair of connectors couple the upper Hooke's joint and the lower Hooke's joint. A first set of bearings are positioned between arms on the upper and lower Hooke's joints and the connectors. The first set of bearings comprise an elastomer, such as elastomeric journal bearings. The upper Hooke's joint is coupled to a yoke and rotor blades by a driver assembly that allows rotor blade flapping. The lower Hooke's joint is coupled to and driven by a mast. A spherical bearing allows the upper Hooke's joint to move laterally along the mast.