Invention Grant
- Patent Title: Fan drive gear system
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Application No.: US17484331Application Date: 2021-09-24
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Publication No.: US11560852B2Publication Date: 2023-01-24
- Inventor: Gary D. Roberge , Michael E. McCune , William G. Sheridan
- Applicant: Raytheon Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: Raytheon Technologies Corporation
- Current Assignee: Raytheon Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F02C7/36
- IPC: F02C7/36 ; F01D25/16

Abstract:
A gas turbine engine includes a fan section. A speed change mechanism drives the fan section. The speed change mechanism is an epicyclic gear train. A torque frame includes a ring and a plurality of fingers that extend from the ring with the plurality of fingers surrounding the speed change mechanism. A bearing support is attached to the plurality of fingers. A first fan section support bearing is mounted on a first axial side of the speed change mechanism and a second fan section bearing is mounted on a second axial side of the speed change mechanism. The second fan section bearing is a fan thrust bearing.
Public/Granted literature
- US20220010736A1 FAN DRIVE GEAR SYSTEM Public/Granted day:2022-01-13
Information query
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