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:
Dec. 10, 2024
Filed:
May. 20, 2022
Rolls-royce Plc, London, GB;
Richard G Stretton, Ashby-de-la-Zouch, GB;
Michael C Willmot, Sheffield, GB;
Nicholas Grech, Derby, GB;
ROLLS-ROYCE PLC, London, GB;
Abstract
A gas turbine engine () for an aircraft comprises an engine core () comprising a turbine (), a compressor (), a core shaft (), and a core exhaust nozzle (), the core exhaust nozzle () having a core exhaust nozzle pressure ratio calculated using total pressure at the core nozzle exit (); a fan () comprising a plurality of fan blades; and a nacelle () surrounding the fan () and the engine core () and defining a bypass duct (), the bypass duct () comprising a bypass exhaust nozzle (), the bypass exhaust nozzle () having a bypass exhaust nozzle pressure ratio calculated using total pressure at the bypass nozzle exit; wherein a bypass to core ratio of: is configured to be in the range from 1.1 to 1.4 under aircraft cruise conditions.