Low-frequency acoustic center body
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United States of America Patent
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May 7, 2024
Grant Date -
Mar 16, 2023
app pub date -
Sep 13, 2021
filing date -
Sep 13, 2021
priority date (Note) -
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Abstract
A center plug for attenuating noise in a gas turbine engine includes an inner skin, the inner skin having a substantially cylindrical shape and extending along an axial centerline; an outer skin positioned radially outside the inner skin; a forward bulkhead disposed proximate a forward end of the inner skin, the forward bulkhead connected to and extending radially outward from the inner skin; an aft bulkhead disposed proximate an aft end of the inner skin, the aft bulkhead connected to and extending radially outward from the inner skin; and a first resonator cavity disposed within a volume defined by the inner skin, the outer skin and the forward bulkhead and the aft bulkhead, the first resonator cavity including a first perforated disk extending between the inner skin and the outer skin and forming a first sub-cavity and a second sub-cavity.
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