Accession Number : ADD011615

Title :   Sonobuoy Float Inflation and Depth Selection Initiators.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Dale,J R

Report Date : 15 Jan 1985

Pagination or Media Count : 6

Abstract : A shape-memory alloy initially configured to have engaging potential for a lance, guillotine or pin connected thereto is wrapped in a heating element powered by current from a water activated battery. When the alloy reaches a specific temperature it silently reverts to a predetermined shape. The reversion force is used to displace a lance to pierce a gas cylinder seal to allow inflation of a float and to cut a retaining loop or withdraw a pin to payout a preset length of hydrophone suspension cable.

Descriptors :   *PATENTS, *HYDROPHONES, *SONOBUOYS, *SUSPENSION DEVICES, CABLES, WATER ACTIVATED BATTERIES, INFLATABLE STRUCTURES, MEMORY DEVICES, TEMPERATURE, LENGTH, HEATING ELEMENTS, SHAPE, FLOATING BODIES, ALLOYS, PINS

Subject Categories : Electrochemical Energy Storage
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE