Abstract
Formation of the back-scattered farfield circumferential-wave pattern for disk-reinforced (compartmentalized) air-filled, metallic cylindrical shells in water is traced through the scattered nearfield to the cylindrical surface. Patterns for single- and multicompartmented shells are displayed. The nondimensionalized frequency, d/λ(=dν/c, where d is the shell thickness, and c is the compressional group velocity in the shell material at the driving frequency ν) is 0.55. Isovelocity and isodecay profiles of the circumferential-wave nearfields of the single- and three-compartmented shells are presented. [Work under contract with the U. S. Office of Naval Research, Code 463.]
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