Accession Number : ADD016429

Title :   Ice Penetrating Buoy.

Descriptive Note : Patent, Filed 15 Apr 93, patented 3 May 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Travor, Bruce W ; DiGirolamo, Ronald D

Report Date : 03 May 1994

Pagination or Media Count : 9

Abstract : A submarine-launched, ice-penetrating sonobuoy is disclosed. The buoy is torpedo-shaped with a collapsible obturator tail-fin section removably attached at the tail-end, standard electronics in a mid-section and an explosive nose cone at the front. Immediately after launch, the tail-fin section expands to exert a drag on the buoy to halt any forward motion. The tail-fin section is discarded and the nose cone and mid-section portion rise until the nose impacts the underside of the ice. Upon impact, a pre-selected shape charge ruptures the ice and an a spring-antenna, connected to the midsection, is raised through the hole.

Descriptors :   *ICE PENETRATION, *SONOBUOYS, *PATENTS, ANTENNAS, DRAG, FINS, SHAPED CHARGES, SLENDER BODIES, IMPACT, MOTION, NOSE CONES, RUPTURE, STANDARDS, SUBMARINE LAUNCHED, UNDERWATER TO SURFACE

Subject Categories : Submarine Engineering
      Acoustic Detection and Detectors
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE