Explosive munition component of low vulnerability, comprising a dual composition explosive charge and process for obtaining a fragmentation effect
First Claim
1. An explosive munition element comprising a casing containing a dual composition explosive charge comprising (i) an internal layer comprising a plastic bonded explosive and (ii) an adjacent coaxial peripheral layer comprising a pyrotechnic composition less sensitive than said plastic bonded explosive of said internal layer, said plastic bonded explosive forming said internal layer being a filled polymer matrix, the filling of which contains at least one organic nitrate explosive, said pyrotechnic composition forming said peripheral layer being a filled polymer matrix, the filling of which contains at least one or both of an inorganic oxidizing agent and an organic nitrate explosive,the interface between said internal layer and said peripheral layer having a star-shaped cross-section.
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Abstract
The present invention relates to an effective and explosive munition component of low vulnerability, consisting of a casing 1 containing an explosive charge consisting of an internal layer 2 made of plastic bonded explosive in which the filler contains at least one organic nitrated explosive, coated with a peripheral adjacent coaxial layer 3 made of less sensitive pyrotechnic composition consisting of a filled polymeric matrix in which the filler contains at least one inorganic oxidizing agent or an organic nitrated explosive.
The interface between the two layers 2 and 3 is of star-shaped cross-section.
The invention also relates to the process for obtaining a fragmentation effect by detonation of the layer 2, reaction of the layer 3 followed by bursting of the casing due to the pressure of the gases formed.
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Citations
16 Claims
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1. An explosive munition element comprising a casing containing a dual composition explosive charge comprising (i) an internal layer comprising a plastic bonded explosive and (ii) an adjacent coaxial peripheral layer comprising a pyrotechnic composition less sensitive than said plastic bonded explosive of said internal layer, said plastic bonded explosive forming said internal layer being a filled polymer matrix, the filling of which contains at least one organic nitrate explosive, said pyrotechnic composition forming said peripheral layer being a filled polymer matrix, the filling of which contains at least one or both of an inorganic oxidizing agent and an organic nitrate explosive,
the interface between said internal layer and said peripheral layer having a star-shaped cross-section.
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14. A method for obtaining fragmentation of a casing housing a dual-composition explosive charge comprising (i) an internal layer comprising a plastic bonded explosive and (ii) an adjacent coaxial peripheral layer comprising a pyrotechnic composition less sensitive than said plastic bonded explosive of said internal layer, said plastic bonded explosive forming said internal layer being a filled polymer matrix, the filling of which contains at least one organic nitrate explosive, said pyrotechnic composition forming said peripheral layer being a filled polymer matrix, the filling of which contains at least one or both of an inorganic oxidizing agent and an organic nitrate explosive, the interface between said internal layer and said peripheral layer having a star-shaped cross-section,
said method comprising releasing gas in said casing by detonating said plastic bonded explosive forming said internal layer of said explosive charge, whereby the detonation wave resulting from detonating said plastic bonded explosive initiates a reaction of the less sensitive pyrotechnic composition forming said peripheral layer, whereby the pressure of the released gas fragments said casing.
Specification