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. 19, 2021
Filed:
Aug. 21, 2018
Rolls-royce Plc, London, GB;
Benedict R. Phelps, Derby, GB;
Mark J. Wilson, Nottingham, GB;
Gabriel Gonzalez-Gutierrez, Derby, GB;
Nigel H S Smith, Derby, GB;
Marco Barale, Derby, GB;
Kashmir S. Johal, Derby, GB;
Stephane M M Baralon, Derby, GB;
Craig W. Bemment, Derby, GB;
Abstract
A gas turbine engineis provided in a fan root to tip pressure ratio, defined as the ratio of the mean total pressure of the flow at the fan exit that subsequently flows through the engine core (P) to the mean total pressure of the flow at the fan exit that subsequently flows through the bypass duct (P), is no greater than a certain value. The gas turbine enginemay provide improved efficiency when compared with conventional engines, whilst retaining an acceptable flutter margin.