Invention Grant
- Patent Title: Gas turbine engine with geared architecture
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Application No.: US16736013Application Date: 2020-01-07
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Publication No.: US10907579B2Publication Date: 2021-02-02
- Inventor: Michael E. McCune , Lawrence E. Portlock , Frederick M. Schwarz
- 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: F02K3/06
- IPC: F02K3/06 ; F02C7/36 ; F16H57/04

Abstract:
A gas turbine engine includes a bypass ratio greater than about ten (10). A fan is supported on a fan shaft and has a plurality of fan blades. A gear system is connected to the fan shaft and a plurality of planetary gears. A first set of opposed angled ring gear teeth are separated from a second set of opposed angled ring gear teeth. A lubricant flow path is located axially between the first set of opposed angled ring gear teeth and the second set of opposed angled ring gear teeth. An annular channel axially is aligned with the lubricant flow path. A low pressure turbine has an inlet, an outlet, and a low pressure turbine pressure ratio greater than 5:1. A low fan pressure ratio is less than 1.45 across the fan blade alone.
Public/Granted literature
- US20200277918A1 GAS TURBINE ENGINE WITH GEARED ARCHITECTURE Public/Granted day:2020-09-03
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