Initiator with loosely packed ignition charge and method of...

F - Mech Eng,Light,Heat,Weapons – 42 – B

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F42B 3/10 (2006.01) C06C 7/00 (2006.01) F42B 3/12 (2006.01) F42B 3/13 (2006.01) F42B 3/195 (2006.01)

Patent

CA 2285568

An initiator (100) assembled from a housing (112), an output charge (144) and an initiation means (110, 120, 58, 54) includes a pulverulent ignition charge (46a) disposed in direct initiation relation to the initiation means, and an output charge (144) that may contain a pulverulent deflagration-to-detonation transition (DDT) charge (144a) and an explosive base charge (144b). The ignition charge (46a) has an average particle size of less than 10 microns, or even less than 5 microns, e.g., 1 to 2 microns. The initiation means may include a semiconductor bridge (18) and the ignition charge (46a) may be compacted with a force of less than about 5880 psi, e.g., with a force of 1000 psi. In another embodiment, an initiator (210) includes a low-energy electrical initiator (234), a loosely packed BNCP ignition charge (218) and a pyrotechnical output charge (214).

La présente invention concerne un initiateur (100) assemblé à partir d'un boîtier (112), une charge de sortie (144), un organe d'amorçage (110, 120, 58, 54) comprenant une charge d'amorce pulvérulente (46a) placée en relation d'initiation directe avec l'organe d'amorçage, et une charge de sortie (144) qui peut contenir une charge pulvérulente à transition déflagration-détonation (DDT) ainsi qu'une charge de base explosive (144b). La charge d'amorce (46a) présente une taille particulaire inférieure à 10 ñm, voire même inférieure à 5 ñm, par exemple 1 à 2 ñm. L'organe d'amorçage peut comporter un pont de semi-conducteurs (18), la charge d'amorce (46a) pouvant être compactée avec une force inférieure à environ 5.880 psi, par exemple une force de 1.000 psi. Selon une autre réalisation, un initiateur (210) peut comporter un initiateur électrique faible énergie (234), une charge d'amorce BNCP faiblement compacte (218) et une charge de sortie pyrotechnique (214).

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