Accession Number : ADD016046

Title :   Ice Penetrating Buoy.

Descriptive Note : Patent application, filed 15 Apr 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 15 Apr 1993

Pagination or Media Count : 17

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 preselected 'shape' charge ruptures the ice and an a spring-antenna, connected to the raid-section, is raised through the hole.

Descriptors :   *ANTENNAS, *ICE, *SONOBUOYS, *PATENT APPLICATIONS, *PENETRATION, *TERMINAL BALLISTICS, BUOYS, DRAG, ELECTRONICS, EXPLOSIVES, FINS, IMPACT, MOTION, NOSE CONES, RUPTURE, SUBMARINE LAUNCHED, INSTALLATION, SEA ICE, AERODYNAMIC DRAG, IMPACT STRENGTH

Subject Categories : Ballistics
      Acoustic Detection and Detectors
      Electrical and Electronic Equipment
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE