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. 31, 1978
Filed:
Dec. 27, 1976
Anders O Andersson, Seattle, WA (US);
Robert B Purves, Kent, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A burner can, including a noise suppressing cavity, for use in the combustor assembly of a gas turbine engine to minimize the combustion noise emitted by the engine, is disclosed. The cavity is mounted at an end of the burner can that includes a fuel nozzle for injection of fuel into the interior of the burner can and is in acoustic communication with the interior of the burner can via a perforated metal sheet that forms a partition between the burner can and the cavity. The cavity is dimensioned and arranged in view of the acoustic transmission system formed by the burner can and the duct system that interconnects the burner can with the engine turbine stage to exhibit an acoustic impedance which minimizes the propagation of combustion noise from the burner can through the engine turbine stages to thereby reduce the engine noise level.