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. 03, 2006
Filed:
Mar. 05, 2004
Robert Schlinker, Canton, CT (US);
Satish Narayanan, Ellington, CT (US);
Wesley K. Lord, South Glastonbury, CT (US);
Gregory A. Kohlenberg, Marlborough, CT (US);
Ramons Reba, South Windsor, CT (US);
John Simonich, Glastonbury, CT (US);
Marios C. Soteriou, Middletown, CT (US);
Thierry Maeder, Glastonbury, CT (US);
Robert Schlinker, Canton, CT (US);
Satish Narayanan, Ellington, CT (US);
Wesley K. Lord, South Glastonbury, CT (US);
Gregory A. Kohlenberg, Marlborough, CT (US);
Ramons Reba, South Windsor, CT (US);
John Simonich, Glastonbury, CT (US);
Marios C. Soteriou, Middletown, CT (US);
Thierry Maeder, Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A system for reducing jet noise emission from an internally mixed gas turbine engine exhaust, comprising a fan/core flow mixer having a plurality of mixer lobes and a common flow nozzle having an equal number of tabs located along a circumferential edge of an aft end of the nozzle. There is a predetermined clocking relationship between the plurality of mixer lobes and the plurality of nozzle tabs that results in reduced exhaust noise emission, most evident in the lower frequency range. A method for reducing jet noise emission from an internally mixed gas turbine engine exhaust comprises selectively aligning a circumferential distribution of a mixed flow vorticity field produced by a fan/core mixer with a circumferentially distributed exhaust flow vorticity field produced by a modified common flow nozzle at an exit plane of the engine exhaust.