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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Array-Based Characterization of Military Jet Aircraft Noise

Krueger, David William 20 July 2012 (has links) (PDF)
Since the 1950s the jet aeroacoustics community has been involved in predicting and measuring the noise distribution in jets. In this work, cylindrical and planar Fourier near-field acoustical holography are used to investigate radiation from a full-scale, installed jet engine. Practical problems involving measurement aperture and the highly directional nature of the source are addressed. Insights from numerical simulations reveal usable reconstruction regions. A comparison of cylindrical and planar NAH for the respective measurement apertures shows cylindrical NAH outperforms planar NAH on reconstructions both towards and away from the source.
noise characterization
jet noise
near-field acoustical holography
holography
NAH
source distribution
source characterization
cylindrical NAH
planar NAH
regularization
modified Tikhonov filter
full-scale jet
noise measurements
Astrophysics and Astronomy
Physics

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