Abstract
A new type of parametric acoustic source configuration utilizes an endfire projector for the primary beam. This configuration shows promise for those applications requiring a projector having small frontal area, e.g., a source to be towed. A small endfire projector consisting of 20 half‐wavelength elements at 30 kHz in line with 20 half‐wavelength elements at 35 kHz was built and tested at NUSC's Dodge Pond test facility. The resulting difference‐frequency beam patterns compare favorably with nearfield beam pattern predictions when the actual primary patterns (which deviate from ideal endfire shape) are taken into account. [Work supported by Naval Material Command.]
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