Silencer for high velocity gas flow

Details Silencer for high velocity gas flow Silencer for high velocity gas flow

1983-11-23

1985-08-27

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

415119, B64D 3302

Patent

active

045372772

ABSTRACT:
The invention provides a silencer for high velocity gas flow which includes a flow passage 2 and a domed, perforated plate 1 which terminates the flow passage, wherein the perforated portions 9 of the plate are distributed over the plate so as to direct gas from the passage as plurality of divergent jets 7 whereby noise is produced with a frequency at maximum intensity in a range of the audible spectrum at which human auditory perception is relatively insensitive. Such a silencer may be used to reduce the perceived noise emitted by a gas turbine engine when for reasons of engine handling and response excess air bled from the compressor stages.

REFERENCES:
patent: 2936846 (1960-05-01), Tyler et al.
patent: 4113050 (1978-09-01), Smith

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