Design and Development of the 81 mm Mortar Cartridge Signal, Underwater Sound (MCSUS), XN-1.

Abstract

This report describes a mortar fired, underwater ordnance item, the 81 mm Mortar Cartridge Signal, Underwater Sound (MCSUS), XN-1. The signal consists of a hydroadiabatic fuze adapted to an inert loaded, 81 mm Mortar Cartridge, M374. This fuze has no moving parts and incorporates a new type of firing train that does not contain primary explosive. The signal is propelled from a ship-mounted Mortar, Mk 2 Mod 0, to enter the water at selectable horizontal ranges up to 4932 yards (4500 meters). It then rapidly descends to a depth of 1000 feet (305 meters) and detonates a 1-ounce (28-gram) explosive charge. The acoustic output is used to measure deviations from linearity of long, ship-towed hydrophone arrays. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADA055974

Entities

People

  • Robert M. Johnson

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Equipment
  • Acoustic Signals
  • Acoustics
  • Air Gaps
  • Engineering
  • Explosive Charges
  • Explosives
  • Guns
  • Mortar Cartridge
  • Mortars
  • Munitions
  • Navy
  • Projectiles
  • Propelling Charges
  • Underwater Sound
  • Underwater Sound Signals
  • Weapons

Readers

  • Acoustical Oceanography.
  • Materials Science
  • Munitions and Ordnance Engineering