High efficiency broadband acoustic resonator and absorption panel
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United States of America Patent
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-
Dec 20, 1983
Grant Date -
N/A
app pub date -
Sep 29, 1981
filing date -
Sep 29, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high efficiency broadband acoustic resonator and absorption panel used for reducing engine noise from high bypass fan jet engines mounted on an aircraft. The panel uses a single layer of cellular honeycomb core with a pair of parallel acoustic septums formed internally in the core for attenuating high and medium frequency sounds during all engine operations as well as the low frequency combination tone and 'buzzsaw' noise experienced during high power aircraft takeoff and cutback engine power settings.
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