Invention Grant
- Patent Title: Inboard bearing assemblies for proprotor systems
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Application No.: US15648650Application Date: 2017-07-13
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Publication No.: US10472059B2Publication Date: 2019-11-12
- Inventor: Kyle Thomas Cravener , Amarjit Kizhakkepat , Ken Shundo , Jared Mark Paulson , Tyler Wayne Baldwin
- Applicant: Bell Helicopter Textron Inc.
- Applicant Address: US TX Fort Worth
- Assignee: Bell Textron Inc.
- Current Assignee: Bell Textron Inc.
- Current Assignee Address: US TX Fort Worth
- Agency: Lawrence Youst PLLC
- Main IPC: B64C27/35
- IPC: B64C27/35 ; B64C29/00 ; F16C23/04 ; F16C27/02 ; F16C33/20

Abstract:
A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode. The proprotor system includes a yoke having a plurality of blade arms with inboard pockets. A centrifugal force and shear bearing assembly is disposed in each of the inboard pockets of the yoke. Each of a plurality of proprotor blades is coupled to the yoke by one of the bearing assemblies such that each proprotor blade has a pitch change degree of freedom about a pitch change axis and a tilting degree of freedom about a focal point. Each bearing assembly includes a centrifugal force bearing coupled to the yoke, a shear bearing coupled to the yoke and an inboard beam coupled between the centrifugal force bearing and the shear bearing. Each inboard beam is coupled to a respective proprotor blade.
Public/Granted literature
- US20190016454A1 Inboard Bearing Assemblies for Proprotor Systems Public/Granted day:2019-01-17
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