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.
College and Department
Physical and Mathematical Sciences; Physics and Astronomy
BYU ScholarsArchive Citation
Krueger, David William, "Array-Based Characterization of Military Jet Aircraft Noise" (2012). Theses and Dissertations. 3676.
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