公开(公告)号：US20220112813A1

公开(公告)日：2022-04-14

申请号：US17496193

申请日：2021-10-07

Applicant: ROLLS-ROYCE plc

Inventor： Stephen J BRADBROOK ,  Martin N GOODHAND ,  Paul M HIELD ,  Andrew PARSLEY ,  Natalie C WONG ,  Robert J CORIN ,  Thomas S BINNINGTON

IPC: F01D5/18 ,  F28D7/16 ,  F02C7/12 ,  F01D5/02

Abstract: A turbofan gas turbine engine includes, in axial flow sequence, a heat exchanger module, a fan assembly, a compressor module, a turbine module, and an exhaust module. The fan assembly includes fan blades defining a fan diameter. The heat exchanger module is in communication with the fan assembly by an inlet duct, and the heat exchanger module further includes radially-extending hollow vanes arranged in a circumferential array, with a channel extending axially between hollow vanes. Each hollow vane accommodates at least one heat transfer element to transfer heat from a first fluid contained within the or each heat transfer element to a corresponding vane airflow passing through the hollow vane and over a surface of the or each heat transfer element. Each hollow vane further includes a flow modulator configured to regulate airflow in proportion to total airflow entering the heat exchanger module in response to a user requirement.