公开(公告)号：US20190048983A1

公开(公告)日：2019-02-14

申请号：US15676146

申请日：2017-08-14

Applicant: Bell Helicopter Textron Inc.

Inventor： Brian Stanley MODRZEJEWSKI ,  Siddhesh Pradeep Raje ,  Gilberto Morales ,  Kenneth Myron Jackson

IPC: F16H55/06 ,  F16H1/28 ,  B64C27/12

Abstract: A hybrid composite reinforced ring gear minimizing radial deformation during high RPM conditions includes a composite backing secured to a metal rim. In use, at operating temperature the composite backing contracts while the metal rim expands thus creating a compressive stress on the metal rim and significantly reduces radial deformation due to centrifugal forces as compared to an all steel ring gear.

公开(公告)号：US10752346B2

公开(公告)日：2020-08-25

申请号：US15787093

申请日：2017-10-18

Applicant: Bell Helicopter Textron Inc.

Inventor： Andrew Paul Haldeman ,  Dalton T. Hampton ,  Frank Bradley Stamps ,  John Lloyd ,  Gilberto Morales

IPC: B64C27/51 ,  B64C27/00

Abstract: A rotor assembly has a composite driveshaft extending between a transmission and a yoke for providing torque from the transmission to the yoke to cause rotation of the yoke and a plurality of rotor blade assemblies attached thereto. The rotor hub also has a composite static mast coupled to the yoke and a frame. The static mast being configured to carry the lift and thrust forces from the yoke to the frame.

公开(公告)号：US11554858B2

公开(公告)日：2023-01-17

申请号：US16435550

申请日：2019-06-09

Applicant: Bell Helicopter Textron Inc.

Inventor： Gilberto Morales ,  Roozbeh Kiamanesh ,  Russell Mueller

IPC: B64C27/12 ,  B64C27/32 ,  B64C27/00

Abstract: A rotor mast including an outer member defining a channel therethrough and an inner member disposed in the channel through the outer member, wherein the inner member is configured to apply a compressive force to the outer member.

公开(公告)号：US20190112041A1

公开(公告)日：2019-04-18

申请号：US15787093

申请日：2017-10-18

Applicant: Bell Helicopter Textron Inc.

Inventor： Andrew Paul Haldeman ,  Dalton T. Hampton ,  Frank Bradley Stamps ,  John Lloyd ,  Gilberto Morales

IPC: B64C27/51 ,  B64C27/00

Abstract: A rotor assembly has a composite driveshaft extending between a transmission and a yoke for providing torque from the transmission to the yoke to cause rotation of the yoke and a plurality of rotor blade assemblies attached thereto. The rotor hub also has a composite static mast coupled to the yoke and a frame. The static mast being configured to carry the lift and thrust forces from the yoke to the frame.