Abstract
A perennial interest in low‐frequency projectors has led to the examination of the air‐backed class IV flextensional projector technology. This technology is capable of providing high power at low frequency in a compact, lightweight package. Despite such recognized capabilities it has seen only limited application due to the complexities of design and manufacture and to the scarcity of data on performance and reliability. In this paper, the results of tests at Seneca Lake on four identical, state‐of‐the‐art flextensional projectors will be presented. The four projectors were tested both individually and in a line array configuration. The test results will be compared with the predictions of a mathematical model developed at the Naval Ocean Systems Center. The high level of agreement between model and experiment allows the model to be used in assessing design tradeoffs for various applications. Specific tradeoffs in terms of power bandwidth, size, weight, and thermal characteristics will be discussed. [Work sponsored by NAVSEA 63R12.]
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