Invention Grant
- Patent Title: Turbofan engine bearing and gearbox arrangement
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Application No.: US14207718Application Date: 2014-03-13
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Publication No.: US09885282B2Publication Date: 2018-02-06
- Inventor: William G. Sheridan , Michael E. McCune
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: United Technologies Corporation
- Current Assignee: United Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, PC
- Main IPC: F02C3/107
- IPC: F02C3/107 ; F02C7/36 ; F02K3/06 ; F02C7/06

Abstract:
A turbofan engine (20) has a fan shaft (120) coupling a fan drive gear system (60) to the fan (28). A low spool comprises a low pressure turbine (50) and a low shaft (56) coupling the low pressure turbine to the fan drive gear system. A core spool comprises a high pressure turbine (46), a compressor (44), and a core shaft (52) coupling the high pressure turbine to the core spool compressor. A first bearing (150) engages the fan shaft, the first bearing being a thrust bearing. A second bearing (160) engages the fan shaft on an opposite side of the fan drive gear system from the first bearing, the second bearing being a roller bearing. A third bearing (180) engages the low spool shaft and the fan shaft.
Public/Granted literature
- US20140271135A1 Turbofan Engine Bearing and Gearbox Arrangement Public/Granted day:2014-09-18
Information query
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