Duct for reducing shock related noise

Details Duct for reducing shock related noise Duct for reducing shock related noise

2011-01-04

2011-01-04

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S210000, C181S221000, C181S222000

Reexamination Certificate

active

07861823

ABSTRACT:
A duct26has circumferentially distributed features capable of scattering acoustic energy associated with fluid dynamic shocks34extending in a shock orientation direction D. Each feature is oriented, over at least a portion of its length, substantially perpendicular to the shock orientation direction. The features may be splices42used to connect segments of an acoustic liner30, partitions56in a stability enhancing casing treatment32, or other features capable of scattering acoustic energy associated with shocks.

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