Invention Grant
- Patent Title: Highly loaded inlet duct in a geared turbofan
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Application No.: US16718405Application Date: 2019-12-18
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Publication No.: US10697374B1Publication Date: 2020-06-30
- Inventor: Ian J Bousfield
- Applicant: ROLLS-ROYCE plc
- Applicant Address: GB London
- Assignee: ROLLS-ROYCE PLC
- Current Assignee: ROLLS-ROYCE PLC
- Current Assignee Address: GB London
- Agency: Oliff PLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@d77c6ac
- Main IPC: F02C7/36
- IPC: F02C7/36 ; F02C7/057 ; F02C3/06 ; F02K3/06

Abstract:
A gas turbine engine includes an inlet duct to guide a core engine flow to a compressor and an engine section stator arranged in the inlet duct upstream of the compressor including vanes with leading edges defining a first annulus area in the inlet duct, a mid-span leading edge point of the engine section stator vanes being arranged at a first radius. The compressor includes a first rotor with a row of first blades with leading edges defining a second annulus area; a mid-span leading edge point of the compressor first blades being arranged at a second radius and an axial distance from the engine section stator vane mid-span leading edge point. The ratio of the second to the first annulus area is equal or greater than 0.75, and the ratio of a difference between the first and second radius to the axial distance is equal or greater than 0.23.
Public/Granted literature
- US20200232392A1 HIGHLY LOADED INLET DUCT IN A GEARED TURBOFAN Public/Granted day:2020-07-23
Information query
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