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公开(公告)号：US20210301719A1
公开(公告)日：2021-09-30
申请号：US17196546
申请日：2021-03-09
Applicant: ROLLS-ROYCE PLC
Inventor： Ian J BOUSFIELD , Michael O HALES , Rory D STIEGER
Abstract: A gas turbine engine including: a high pressure turbine, a low pressure turbine, a high pressure compressor coupled to the high pressure turbine by a high pressure shaft, a propulsor and a low pressure compressor coupled to the low pressure turbine via a low pressure shaft and a reduction gearbox; wherein the high pressure compressor defines an average stage pressure ratio at cruise conditions of between 1.25 and 1.35 and consists of 10 or 11 stages; and the high pressure compressor and low pressure compressor together define a core overall pressure ratio at cruise conditions of between 40:1 and 60:1.
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