Abstract
A theoretical study of thermo‐acoustic sources in the context of sonar applications was undertaken. The main objectives were to improve energy efficiency and to provide a means for beamsteering, using a moving thermo‐acoustic source. The results show that improvements in energy efficiency of several orders of magnitude are possible at very large Mach numbers. (This is quite distinct from peak intensity efficiency which occurs at Mach 1.) The results also show the possibility of beamsteering by moving the thermo‐acoustic source in a number of ways. The results suggest that the thermo‐acoustic source may, in certain sonar applications, be a viable acoustic projector. [Work supported by Office of Naval Research.]
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