SYSTEM AND METHOD FOR FORMING ELONGATED PERFORATIONS IN AN INNER BARREL SECTION OF AN ENGINE
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United States of America Patent
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May 19, 2015
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Aug 28, 2013
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Abstract
Certain embodiments of the present disclosure provide an acoustic inlet barrel of an engine. The acoustic inlet barrel may include an inner barrel configured to provide a boundary for directing airflow through the engine. The inner barrel may include an inner face sheet separated from an outer face sheet by an acoustic core. The inner barrel may include a plurality of elongated, non-circular perforations formed through the inner face sheet.
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