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Experiments on jet flows and jet noise far-field spectra and directivity patterns

Published online by Cambridge University Press:  28 March 2006

Erik Mollo-Christensen
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.
Marc A. Kolpin
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.
John R. Martuccelli
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.

Abstract

The results of measurements of far-field sound emitted from jets are reported. The narrow-band power spectral density of the sound in the far field was measured for three jet diameters, three Mach numbers, and five angular positions. The intensity distribution of mean-square pressure fluctuation in the far field in several wide frequency ranges were also measured. The similarity relations found from the experiments are reported.

Type
Research Article
Copyright
© 1964 Cambridge University Press

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