A First Look at the DGEN380 Engine Acoustic Data from a Core-Noise Perspective

Hultgren, Lennart S.

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NASA NTRS · 20150023070

A First Look at the DGEN380 Engine Acoustic Data from a Core-Noise Perspective

Hultgren, Lennart S.

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Abstract

This work is a first look at acoustic data acquired in the NASA Glenn Research Center Aero-Acoustic Propulsion Laboratory using the Price Induction DGEN380 small turbofan engine, with particular emphasis on broadband combustor (core) noise. Combustor noise is detected by using a two-signal source separation technique employing one engine-internal sensor and one semi-far-field microphone. Combustor noise is an important core-noise component and is likely to become a more prominent contributor to overall airport community noise due to turbofan design trends, expected aircraft configuration changes, and advances in fan-noise-mitigation techniques. This work was carried out under the NASA Fundamental Aeronautics Program, Fixed Wing Project, Quiet Performance Subproject

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Hultgren, Lennart S.. 2015-12-01. A First Look at the DGEN380 Engine Acoustic Data from a Core-Noise Perspective. https://ntrs.nasa.gov/citations/20150023070

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