Procedure for Separating Noise Sources in Measurements of Turbofan Engine Core Noise - Softcover

Miles, Jeffrey Hilton

Softcover

ISBN 10: 128723660X ISBN 13: 9781287236603

Publisher: Bibliogov, 2013

Synopsis

The study of core noise from turbofan engines has become more important as noise from other sources like the fan and jet have been reduced. A multiple microphone and acoustic source modeling method to separate correlated and uncorrelated sources has been developed. The auto and cross spectrum in the frequency range below 1000 Hz is fitted with a noise propagation model based on a source couplet consisting of a single incoherent source with a single coherent source or a source triplet consisting of a single incoherent source with two coherent point sources. Examples are presented using data from a Pratt & Whitney PW4098 turbofan engine. The method works well.

Edition details

• Publisher: Bibliogov
• Publication date: 2013
• Language: English
• ISBN 10: 128723660X
• ISBN 13: 9781287236603
• Binding: Paperback
• Number of pages: 28