公开(公告)号：US09797314B2

公开(公告)日：2017-10-24

申请号：US14708716

申请日：2015-05-11

Applicant: ROLLS-ROYCE PLC

Inventor： Malcolm Hillel ,  Thierry Moes ,  Rory Douglas Stieger

IPC: F01D17/00 ,  F02C9/18 ,  F02C3/04 ,  F01D15/10 ,  F04D27/02 ,  B64D13/06 ,  F04D19/02

CPC classification number: F02C9/18 ,  B64D2013/0618 ,  B64D2013/0644 ,  F01D15/10 ,  F02C3/04 ,  F04D19/02 ,  F04D27/0223 ,  F04D27/0261 ,  F05D2220/76 ,  F05D2270/101 ,  Y02T50/56

Abstract: A method of operating a gas turbine engine compressor. The method includes: determining an operating point of the compressor, and modulating mass flow of environmental control system input air to maintain the operating point of the gas turbine engine compressor within predetermined limits.

公开(公告)号：US09739207B2

公开(公告)日：2017-08-22

申请号：US14644799

申请日：2015-03-11

Applicant: ROLLS-ROYCE PLC

Inventor： Malcolm Hillel ,  Peter Swann ,  Andrew Martin Rolt ,  Paul Fletcher

IPC: F02C9/20 ,  B64D33/04 ,  B64D31/06 ,  F02K1/76 ,  F02K1/12 ,  F02K1/16 ,  F02K3/075

CPC classification number: F02C9/20 ,  B64D31/06 ,  B64D33/04 ,  F02K1/1207 ,  F02K1/16 ,  F02K1/76 ,  F02K1/825 ,  F02K3/075 ,  F05D2220/323 ,  F05D2270/08 ,  F05D2270/311 ,  F05D2270/312 ,  F05D2270/313 ,  Y02T50/677

Abstract: The invention concerns an aircraft propulsion control system in which a gas turbine engine has an actuable flow opening for control of flow to or from a portion of the engine. One or more sensor is arranged to sense a condition indicative of vapor trail formation by the exhaust flow from the engine. A controller is arranged to control actuation of the flow opening so as to reduce the efficiency of the engine upon sensing of said condition by the one or more sensor. In one example, the flow opening is a variable area fan nozzle.