Societe Nationale Des Poudres Et Explosifs

Snpe

Eurenco France

Alain Bonnel

Bruno Nouguez

Alain Tinet

Bernard Mahe

Claude Grimelli

Jean-Paul Augier

Dominique Houdusse

Pierre Vitrant

In the military field of explosive munitions, a semi-continuous process produces a composite explosive charge composing a charged solid polyurethane matrix, the charge of which is pulverulent and comprise at least one nitro-organic explosive, by introduction into a mould of a pastry explosive composition and then thermal crosslinking of this composition. The composition is obtained by mixing constituents essentially comprising a polyol prepolymer, a plasticizer, a polyisocyanate monomer and a pulverulent solid charge comprising at least one nitro-organic explosive. This simple and economic process makes it possible to dispense, without disadvantage, with the pot life/curing time of the composition compromise.

Semi-continuous two-component process for producing a composite explosive charge comprising a polyurethane matrix

A subject-matter of the present invention is a safety igniter for a pyrotechnic munition component capable of being subjected to slow cook-off comprising a structure in the form of a casing and a solid pyrotechnic charge present in the structure. This safety igniter, which is composed solely of a block of solid pyrotechnic composition based on pentrite, is intended to bring about the combustion without detonation of the pyrotechnic charge when the munition component is subjected to slow cook-off.

Safety igniter for a pyrotechnic munition component capable of being subjected to slow cook off

The invention relates to a process for the manufacture of an explosive ammunition component with controlled fragmentation, comprising a charge of solid explosive contained in a metal casing internally clad with a sleeve externally provided with indentations. A rigid sleeve made of plastic or elastomer, externally provided with indentations and which has a form of a vessel provided with a single opening, is produced first of all, and then this sleeve is introduced, with the bottom first, into a metal casing comprising an opening and whose shape and dimensions are such as to allow the sleeve to clad the casing internally. A pasty or liquid explosive composition is next cast into the sleeve and the composition is then solidified.

Process for the manufacture of an explosive ammunition component with

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Sorgues, France

Alain Bonnel