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:
Nov. 14, 2023
Filed:
Aug. 10, 2021
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02K 3/075 (2006.01); G01F 1/66 (2022.01);
U.S. Cl.
CPC ...
F02K 3/075 (2013.01); G01F 1/66 (2013.01); F05D 2220/36 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/606 (2013.01); F05D 2270/112 (2013.01); F05D 2270/303 (2013.01); F05D 2270/306 (2013.01); F05D 2270/80 (2013.01);
Abstract
A turbofan gas turbine engine having a bypass duct, and a bypass airflow measurement system. The bypass airflow measurement system comprises: at least one acoustic transmitter configured to transmit an acoustic waveform across the bypass duct of the gas turbine engine though which a bypass airflow passes to at least one acoustic receiver; where the at least one acoustic transmitter and the at least one acoustic receiver are located on an axial plane that is substantially perpendicular to the bypass flow. A method of measuring bypass airflow properties of a turbofan gas turbine engine is also described.