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:
Mar. 03, 2020
Filed:
Feb. 28, 2018
Rolls-royce Plc, London, GB;
Richard Northall, Derby, GB;
Anthony J. Rae, Derby, GB;
Michael S. Krautheim, Fountaintown, IN (US);
Alastair D. Walker, Derby, GB;
Jonathan F. Carrotte, Derby, GB;
Ian Mariah, Derby, GB;
ROLLS-ROYCE plc, London, GB;
Abstract
An annular array of turning vanesis provided in a ductof a gas turbine engine. The annular array of turning vanescomprises aerodynamic vanesand strut-vanes. The strut-vaneshave greater chord length and extend further axially downstream than the aerodynamic vanes. The leading edge of the strut-vanesis upstream of the trailing edge of the aerodynamic vanes. The strut-vanes provide flow turning. The space to chord ratio of the aerodynamic vanes that are closest to the suction surface of a strut-vane is higher than the space to chord ratio of aerodynamic vanes that are closest to a pressure surface of the strut-vane. The arrangement allows the ductto be axially short.