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Jet exhaust noise suppressorNoise suppression for a jet engine exhaust is provided by an annular divergent body attached to an exhaust nozzle. The smallest diameter of the divergent body is larger than the diameter of the exhaust nozzle exit to form an annular step which produces a shock wave in the exhaust as it passes the step. An annular shroud is disposed around the divergent body and causes outside air to pass through voids in the divergent body to mix with the jet exhaust gas. The divergent body includes a plurality of channels with separators between the channels.
Document ID
19740019377
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Huff, R. G. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
June 28, 1974
Subject Category
Communications
Accession Number
74N27490
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LEW-11286-1|US-PATENT-3,820,630
Patent Application
US-PATENT-APPL-SN-339806

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