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.