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. 27, 2009
Filed:
May. 29, 2007
Ramons A. Reba, South Windsor, CT (US);
Bruce L. Morin, Springfield, MA (US);
Stephen A. Morford, Marlborough, CT (US);
Wesley K. Lord, South Glastonbury, CT (US);
Ramons A. Reba, South Windsor, CT (US);
Bruce L. Morin, Springfield, MA (US);
Stephen A. Morford, Marlborough, CT (US);
Wesley K. Lord, South Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A noise control cassette for a gas turbine engine includes a perforated face sheet configured for exposure to an airflow, a non-perforated backing sheet, a core arranged between the face sheet and the backing sheet and defining a cavity between the face sheet and the backing sheet having an effective length tuned so as to provide acoustic reactance control, and an attachment face for attaching the cassette to an airfoil-shaped structure.