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