Aircraft jet engine comprising a system for reducing the noise generated by the ejection of the gases
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United States of America Patent
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Oct 6, 2015
Grant Date -
Jul 26, 2012
app pub date -
Jan 24, 2012
filing date -
Jan 24, 2011
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Abstract
An aircraft jet engine comprising a nozzle to eject a gas stream, and a system for reducing the noise generated by the ejection of the gas stream. This system comprises several ducts which each are connected upstream to a recess divided into several chambers and open, downstream, at the outlet of nozzle. In this way, each duct ejects a fluid jet deriving from the recess and which interacts with the gas stream of the engine. The system also comprises a pulsation means for the fluid jet which brings about its ejection at the nozzle outlet and/or modulates its speed by varying the volume contained in the recess.
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