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. 31, 2020
Filed:
Jun. 22, 2017
Rolls-royce Plc, London, GB;
David Steele, Bristol, GB;
Rolls-Royce plc, , GB;
Abstract
A gas turbine engine () comprises a main fluid flow exhaust nozzle () bounding a main fluid flow path, and a cooling nozzle () provided upstream of the main fluid flow exhaust nozzle () in the main fluid flow path. The cooling nozzle () is arranged to provide cooling air to a surface () of the main fluid flow exhaust nozzle (), the cooling nozzle () comprises first and second outlets (). The first outlet () is located adjacent the main fluid flow exhaust nozzle surface () and is spaced from the main fluid flow path by the second outlet (). The second outlet () comprises a convergent divergent nozzle configured to accelerate cooling air exhausted from the second outlet () to a velocity greater than air exhausted from the first outlet ().