Patent, Filed 20 Jul 92, patented 18 May 93
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
An omnidirectional hydrophone having an elastic shell in the form of an oblate ellipsoid of revolution having the ratio of its major axis to is minor axis greater than about V2-v where v is Poissons ratio of the shell material, wherein the circular circumference of the shell at different circular parallels of latitude undergoes strains of opposite sign when the shell is subjected to a pressure change. The differential strains are advantageously measured by an optical fiber interferometer having one leg wound about the equatorial circumference of the shell and another leg spirally wound near one or both of the poles.
- Acoustic Detection and Detectors