公开(公告)号：US20200248581A1

公开(公告)日：2020-08-06

申请号：US16749109

申请日：2020-01-22

Applicant: ROLLS-ROYCE plc

Inventor： Gareth L. JONES ,  Daniel J. WILLIAMS ,  Natalie C. WONG

IPC: F01D21/02 ,  F02K3/10

Abstract: A method is provided of controlling a gas turbine having a shaft connecting a compressor to a turbine, as well as having a reheat system, and a gas turbine. The method includes the steps of: operating the engine using the reheat system to provide a mass flow rate of reheat fuel into a gas flow of the gas turbine engine downstream of an exit of the turbine; detecting a shaft break event in the shaft; and in response to this detection, maintaining the mass flow rate of the reheat fuel being provided into the gas flow downstream of the turbine exit, whereby the maintained mass flow rate of reheat fuel raises a back pressure downstream of the turbine and thereby reduces a rotational speed of the turbine.