Pyrotechnic impact fuse

Abstract

An explosive having cavities ( 16 ) is proposed for a pyrotechnic impact fuse ( 100 ) for high explosive shells ( 1 ). The sensitivity of the explosive lies in the class of secondary explosives, due to the cavities ( 16 ). Mechanical safety means can therefore be eliminated.

1 . A pyrotechnic impact fuse ( 100 ) for high explosive shells and shells with an impact function with a pyrotechnic firing means ( 13 ) in a cap ( 6 ), and an explosive charge ( 5 ) for breaking up the shell ( 1 ), wherein the firing means ( 13 ) surrounds an anvil ( 7 ) at the shell side, characterised in that a mouldable or pressable explosive has uniformly distributed, defined cavities ( 16 ;  32 ) of a diameter of 0.2 to 1.2 mm.  
     
     
         2 . An impact fuse according to  claim 1  characterised in that suitable explosives are 
 HWC, hexogen, wax graphite,  
 ocfol,  
 octol,  
 PHX, plastic-bound explosive, or  
 PETN, nitropenta.  
 
     
     
         3 . An impact fuse according to  claim 1  characterised in that the cavities ( 16 ) are defined by glass balls, styropor bodies, the addition of polyurethane, the supply of gas in the casting or moulding operation or by means of bores ( 32 ) which are disposed transversely with respect to the axis ( 31 ) of the explosive body ( 30 ).