The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2025
Filed:
Feb. 11, 2025
Rolls-royce Plc, London, GB;
Martin K Yates, Derby, GB;
ROLLS-ROYCE PLC, London, GB;
Abstract
A fuel system for a gas turbine engine configured to combust hydrogen fuel. The fuel system includes a main fuel conduit, a fuel pump configured to operate on hydrogen within fuel conduit to provide pressurised fuel to core combustor of gas turbine engine, an auxiliary combustor downstream in fuel flow of fuel pump, and configured to combust a portion of fuel diverted from main fuel conduit and to heat remainder of fuel in main fuel conduit, and a fuel turbine downstream in fuel flow of the auxiliary combustor. The fuel turbine is configured to be driven by heated fuel from auxiliary combustor and configured to power the fuel pump. The fuel system comprises a turbine inlet valve provided upstream in hydrogen fuel flow of the fuel turbine and configured to control mass flow rate and/or pressure of fuel flowing into fuel turbine. 1. A method of operation is also described.