High Fidelity Low Frequency Transducer for Use at Great Depth.
DEPARTMENT OF THE NAVY WASHINGTON D C
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A hose-like hydrophone array is insensitive to ambient pressure variations while retaining an acceptable performance capability. Ferroelectric cylinders mount rigid cylinders at opposite ends and are separated by elongate lengths of corrugated tubing. A dielectric oil fills the cylinders and lengths of corrugated tubing to make the array relatively insensitive to pressure variations. Since the dielectric oil is several times five to 10 more compressible than the ambient water, the ferroelectric elements can more compliantly respond to a broader bandwidth of impinging or radiated acoustic energy. The radially rigid lengths of tubing hold a greater volume of the relatively compressible oil to permit this response. Author
- Acoustic Detection and Detectors