公开(公告)号：US20230286658A1

公开(公告)日：2023-09-14

申请号：US18170604

申请日：2023-02-17

Applicant: ROLLS-ROYCE plc

Inventor： Graeme E F SUTCLIFFE ,  Richard G MOCHRIE ,  Jade WHITTLE

IPC: F02K7/16 ,  F02C7/04

CPC classification number: F02K7/16 ,  F02C7/04 ,  F05D2220/10 ,  F05D2220/323 ,  F05D2240/10 ,  F05D2260/213

Abstract: A ram-air duct system includes a ram-air duct configured to receive a flow of ram-air from a ram-air inlet and discharge the flow to a ram-air outlet. The system also includes a heat exchanger configured to exchange heat with air within the ram-air duct, an auxiliary air passageway and an electrically-driven air mover configured to move a flow of auxiliary air along the auxiliary air passageway for discharge into the ram-air duct through an intermediate inlet between the ram-air inlet and the ram-air outlet. The air duct system further includes a controller configured to selectively operate the ram-air duct system in an auxiliary supply mode in which the air mover and/or a control valve are controlled to cause the flow of auxiliary air to be discharged into the duct through the intermediate inlet, to thereby control a rate of heat exchange between the heat exchanger and air within the duct.

公开(公告)号：US20230279812A1

公开(公告)日：2023-09-07

申请号：US18166253

申请日：2023-02-08

Applicant: ROLLS-ROYCE plc

Inventor： Richard G. MOCHRIE ,  Graeme E F SUTCLIFFE ,  Jade WHITTLE

IPC: F02C9/28 ,  F02C7/224 ,  F02C7/16

CPC classification number: F02C9/28 ,  F02C7/224 ,  F02C7/16 ,  F05D2220/32 ,  F05D2240/35 ,  F05D2260/213 ,  F05D2260/232

Abstract: A fuel management system for a gas turbine engine, the fuel management system comprising a fuel supply line configured to supply fuel from a system inlet to a combustor of the gas turbine engine via a combustor pump and combustor valve. A heat exchanger is configured to reject heat from a thermal load of the gas turbine engine to fuel in the fuel supply line between the system inlet and the combustor valve. There is a downstream recirculation line configured to recirculate a downstream excess portion of fuel from the fuel supply line, the downstream recirculation line extending from a downstream recirculation point on the fuel supply line between the heat exchanger and the combustor valve.