The acoustical signatures as observed by an auditor on the ground are explored for various radiating bodies. Specifically, a theory that describes the origin of sonic booms of two unsteady point sources and of an airplane is developed. In 1968, Garrick and Maglieri conducted an experiment where a General Dynamics F-106 was subjected to sinusoidal pitch oscillations. At the time, the results of the observed sonic boom were not understood; they had expected a distorted sonic boom. The theory presented in the present study offers an explanation of the results. An essential point needed in order to understand their observations is the source distribution for an acoustically radiating body. This source distribution occupies a region of space many times the length of the airplane. Therefore, any attempts to distort a sonic boom must deal with the grand scale of the source distribution.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/291664 |
| Date | January 1997 |
| Creators | Bergmeier, Gene Georg, 1972- |
| Contributors | Crow, Steven C. |
| Publisher | The University of Arizona. |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Thesis-Reproduction (electronic) |
| Rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. |
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