Method and apparatus for a non-oil-filled towed array with a novel hydrophone design and uniform buoyancy technique
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United States of America Patent
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Nov 16, 2004
Grant Date -
Sep 18, 2003
app pub date -
Dec 20, 2002
filing date -
Aug 4, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A structure and method for constructing a non-oil-filled towed array providing a single cable entry point for each channel regardless of the number of hydrophones used to make up a hydrophone group or array is described. The method and apparatus enables uniform buoyancy of the hydrophone array and the primary cable around which the hydrophone array is wound. Uniform buoyancy is achieved through the addition of hollow micro-spheres into a Reaction Injection Molded (RIM) polyurethane material used to mold the hydrophones. Additional buoyancy may be desired adjacent heavier cable sections where connectors and telemetry modules are located. An embodiment enables precise adjustment of hydrophone cable buoyancy by providing precise adjustment of the concentration of hollow glass micro-spheres in areas where more or less buoyancy is desired.
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