公开(公告)号：US20230134256A1

公开(公告)日：2023-05-04

申请号：US18045864

申请日：2022-10-12

Applicant: ROLLS-ROYCE plc

Inventor： Geoffrey B. JONES

IPC: F01D25/10 ,  F01D9/04 ,  F02C7/00

Abstract: A gas turbine engine comprises a fan; an engine core comprising a compressor, a combustor, and a turbine coupled to the compressor through a shaft; a reduction gearbox; an Engine Section Stator (ESS) comprising a plurality of ESS vanes with an external surface washed by the core airflow; an ESS heating system adapted to heat the ESS vanes, and a temperature sensor adapted to detect the temperature of the external surface of the ESS vanes and send a signal to the ESS heating system when said temperature is below a reference temperature. Upon detection and/or inference of ice crystal conditions and receiving from the temperature sensor the signal that the temperature is below the reference temperature, the ESS heating system is activated to heat at least a portion of the external surface of the ESS vanes and promote melting and adhering of ice crystals thereto.

公开(公告)号：US20230220780A1

公开(公告)日：2023-07-13

申请号：US18122807

申请日：2023-03-17

Applicant: ROLLS-ROYCE plc

Inventor： Geoffrey B. JONES ,  Edward J. SPALTON ,  Duncan A. MACDOUGALL

IPC: F01D17/16 ,  F01D9/04 ,  F02C7/042

CPC classification number: F01D17/162 ,  F01D9/04 ,  F02C7/042 ,  F05D2220/323 ,  F05D2240/12

Abstract: A gas turbine engine includes: a fan rotating about an engine main axis; a core duct; an engine core; an Engine Section Stator (ESS) including a plurality of ESS vanes and arranged in the core duct downstream of the fan; and a plurality of variable inlet guide vanes (VIGV) adapted to rotate about a pivot axis and arranged in the core duct downstream of the ESS. The VIGV vanes are arranged angularly rotated with respect to the ESS vanes such that the VIGVs are shielded by the ESS, thereby protecting the VIGVs from icing and from ice shedding from the ESS vanes.