Accession Number : ADD010706

Title :   Flotation Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Dale,J R

Report Date : 27 Sep 1983

Pagination or Media Count : 7

Abstract : An air launchable sonobuoy having two separate liquid chemicals which react upon mixing to form an expanded, rigid foam flotation device. Upon deployment in the air, windflaps release a preloaded plate within a submersible housing and urge the chemicals to mix and foam in an elastic envelope. After water impact, an orifice in the housing permits water to fill the viods at a rate sufficient to allow the housing to remain afloat until foaming and erection of an antenna within the envelope is complete. As the envelope expands, a latch releases it from the housing and permits the housing when flooded to sink to the desired depth determined by the payout length of a cable within the housing connected to the floatation device. (Author)

Descriptors :   *Patents, *Floats, *Expanded plastics, Rigidity, Binary chemical agents, Foam, Chemicals, Mixing, Chemical reactions, Air launched, Sonobuoys, Antennas, Deployment, Housings, Flotation, Water entry

Subject Categories : Plastics
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE