Index of content:
Volume 119, Issue 3, March 2006
- AEROACOUSTICS, ATMOSPHERIC SOUND 
119(2006); http://dx.doi.org/10.1121/1.2165069View Description Hide Description
Over ago, a theory was developed by Sawyers [K. N. Sawyers, J. Acoust. Soc. Am.44, 523–524 (1968)] to predict the underwater soundpressure field due to loading of the water surface with an idealized sonic boom. In Sawyers’ theory, the sonic-boom wave was taken to be uniform and of infinite extent in the cross-track direction, i.e., the horizontal direction perpendicular to the direction of motion. The resulting prediction is thus two-dimensional, depending only on the in-track position and the depth into the water. The current paper presents a generalization of Sawyers’ theory from two to three spatial dimensions. Three sample problems are solved, with one of the results showing that the three-dimensional method correctly reproduces Sawyers’ two-dimensional results when the surface disturbance is uniform in crosstrack. Results from the final problem provide actual predictions of underwater sound generated by a cruise missile flying at an altitude of and a speed of .