Improvements in or relating to explosive charges

Abstract

A liner for a shaped charge, the liner being a generally conical liner, in which the liner is formed from metal or metal alloy and in which the liner has an internal apex angle in the range of approximately 105-110 degrees.

1 . A liner for a low-order explosive shaped charge, the liner being a die-cast cone, the die-cast cone being formed from magnesium or a magnesium alloy, the die-cast cone having an internal apex angle in the range of approximately 108 degrees. 
     
     
         2 - 12 . (canceled) 
     
     
         13 . A liner as claimed in  claim 1 , in which the material of the cone has a generally uniform thickness. 
     
     
         14 . A shaped charge having a liner as claimed in  claim 1 . 
     
     
         15 . A shaped charge comprising a generally cylindrical bottle-like container comprising a generally cylindrical body, at one end of the body an inclined wall extends radially inwards, at the centre of the wall a neck is provided and has a central passage for receiving a detonator, the other end of the body is closed by a plate, a projectile in the form of a liner is provided, the shape of the liner is complimentary with the shape of the plate. 
     
     
         16 . A charge as claimed in  claim 15 , in which the container is formed from a plastics material. 
     
     
         17 . A charge as claimed in  claim 15 , in which the liner is a cone. 
     
     
         18 . A system as claimed in  claim 16 , in which the cone angle is in the range 107-109 degrees. 
     
     
         19 . A system as claimed in  claim 17 , in which the cone angle is approximately 108 degrees. 
     
     
         20 . A system as claimed in  claim 15 , in which the liner is formed from magnesium or a magnesium alloy. 
     
     
         21 . A charge as claimed  claim 15 , in which in the diameter of the body is greater than the diameter of the liner. 
     
     
         22 . A charge as claimed in  claim 15 , in which the body is filled with liquid explosive, plastic explosive, a cast explosive, a factory cast or pressed explosive, a user-filled plastic explosive or a liquid binary explosive. 
     
     
         23 . A charge as claimed in  claim 15 , in which the body is factory-filled with explosive material. 
     
     
         24 . A charge as claimed in  claim 15 , in which the body is user-filled with explosive material. 
     
     
         25 . A charge as claimed in  claim 15 , in which the projectile is a copper jet forming cone. 
     
     
         26 . A charge as claimed in  claim 15 , in which the projectile is a copper explosively formed projectile. 
     
     
         27 . A charge as claimed in  claim 15 , in which the projectile is a magnesium jet forming cone. 
     
     
         28 . An explosive ordnance neutralisation system comprising a low-order explosive shaped charge, in which the charge comprises a generally cylindrical bottle-like container, the container includes a generally cylindrical body, at one end of the body an inclined wall extends radially inwards, at the centre of the wall a neck is provided and has a central passage, a separate screw threaded collar is provided for receiving a detonator and can be screwed onto the neck, the other end of the body is closed by a membrane, the membrane has an annular flange that fits onto the open end of the body, a short annular skirt depends from the flange, the skirt is positioned to fit into the interior of the body, at the centre of the flange a longitudinal annular leg extends and is closed by a concave plate so the plate is inside the body, the interior of the body provides an enclosure for receiving liquid explosive, a projectile in the form of a die-cast magnesium metal cone having a cone angle of 108 degrees is provided, the shape of the cone is complimentary with the shape of the plate/leg, the charge diameter is greater than the projectile diameter.