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:
Apr. 21, 2026
Filed:
May. 20, 2025
Rolls-royce Plc, London, GB;
Benjamin J Keeler, Chesterfield, GB;
Craig W Bemment, Derby, GB;
Andrea Minelli, Derby, GB;
Alastair G Hobday, Derby, GB;
Andrew T Smith, Derby, GB;
Paul W Ferra, Derby, GB;
ROLLS-ROYCE PLC, London, GB;
Abstract
A gas turbine engine for an aircraft includes an engine core with a turbine, combustor, compressor, and core shaft connecting the turbine to the compressor. The engine includes a fan upstream of the core and driven by the shaft. The engine includes a nacelle surrounding the fan and core and defining a bypass duct radially outside of the core. The bypass ratio, defined as the ratio of mass flow rate through the bypass duct to mass flow rate through the core at cruise conditions, is greater than or equal to 4. The engine includes a plurality of actuators. At least one of the actuators is configured to actuate a bleed air valve. The engine includes a fuel supply system that supplies fuel for combustion in the combustor, and supplies fuel to fueldraulically drive the at least one actuator configured to actuate the bleed air valve.