公开(公告)号：US10006374B2

公开(公告)日：2018-06-26

申请号：US14688423

申请日：2015-04-16

Applicant: ROLLS-ROYCE PLC

Inventor： Alasdair Gardner ,  Arthur Laurence Rowe ,  Mark David Taylor ,  Nicholas Howarth

IPC: F02C9/22 ,  F01D17/16 ,  F02C9/20 ,  F02C9/54 ,  F02C6/00 ,  F02C7/36

CPC classification number: F02C9/22 ,  F01D17/162 ,  F02C6/00 ,  F02C7/36 ,  F02C9/20 ,  F02C9/54 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2270/05 ,  F05D2270/06 ,  F05D2270/303 ,  F05D2270/304 ,  Y02T50/671

Abstract: An engine that has, in axial flow series, booster compressor, core compressor, combustion equipment, core turbine, and low-pressure turbine. Core turbine drives core compressor via an interconnecting high-pressure shaft. Low-pressure turbine drives booster compressor via an interconnecting low-pressure shaft. Low-pressure turbine also drives external load having a defined speed characteristic that dictates speed of the low-pressure turbine and booster compressor. Booster compressor has one or more rows of variable stator vanes. The method includes: scheduling variation in the angle of variable stator vanes as a function of speed of the booster compressor wherein the vanes open as booster compressor speed increases; measuring or setting one or more operational parameters which are determinative of temperature at entry to core turbine; and biasing scheduling of angle variation of variable stator vanes as a function of operational parameter(s) to reduce variation in temperature at entry to core turbine.