公开(公告)号：US20230332509A1

公开(公告)日：2023-10-19

申请号：US18208006

申请日：2023-06-09

Applicant: ROLLS-ROYCE plc

Inventor： Caroline L TURNER

IPC: F01D15/10 ,  F02C3/113

CPC classification number: F01D15/10 ,  F02C3/113

Abstract: In a gas turbine engine of the type having a high-pressure (HP) spool and a low-pres sure (LP) spool, methods of increasing surge margin and compression efficiency at a given thrust are provided. One method increases compression efficiency and includes transferring mechanical power from the HP spool to the LP spool to reduce a corrected speed of a HP compressor therein and raise a working line of a LP compressor therein. Another method increases surge margin and includes transferring mechanical power from the LP spool to the HP spool to increase a corrected speed of a HP compressor therein and lower a working line of a LP compressor therein.