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

• US 20030010246A1
• Filed: 06/19/2002
• Published: 01/16/2003
• Est. Priority Date: 07/13/2001
• Status: Active Grant

• Current Assignee: Eurenco (Government of France)
• Original Assignee: SNPE
• Inventors: Tinet, Alain, Houdusse, Dominique, Nouguez, Bruno, Bonnel, Alain
• Granted Patent: US 6,615,737 B2
• Time in Patent Office: Days
• US Class Current: 102/481
• CPC Class Codes: C06B 45/00 Compositions or products which are defined by structure or arrangement of component of product explosive charges of particular form or shape F42B1/00, F42B3/00
• CPC Class Codes: C06B 45/10 the organic component containing a resin
• CPC Class Codes: C06C 9/00 Chemical contact igniters; Chemical lighters
• CPC Class Codes: F42B 39/20 Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable ; Blow-out panels; Venting arrangements ventilating arrangements on packages formed from foldable or erectable blanks B65D5/4295; packages with pressure-relief valves incorporated in a container wall B65D77/225
• CPC Class Codes: F42C 19/02 Fuze bodies; Fuze housings

Abstract

A subject-matter of the present invention is a safety igniter 5 for a pyrotechnic munition component comprising a structure 1 in the form of a jacket and a solid pyrotechnic charge 4 present in the structure 1. This safety igniter 5, 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 4 when the munition component is subjected to slow cook off.

Claims

1. Safety igniter (5) for a pyrotechnic munition component comprising a structure (1) in the form of a jacket and a solid pyrotechnic charge (4) present in the structure (1), the said igniter (5) being intended to bring about the combustion without detonation of the pyrotechnic charge (4) when the munition component is subjected to slow cook off, characterized in that this igniter (5) is composed solely of a block of solid pyrotechnic composition based on pentrite.

2. Safety igniter (5) according to claim 1, characterized in that the block of solid [lacuna] composition based on pentrite is a composite explosive.

3. Safety igniter (5) according to claim 1, characterized in that the block of solid pyrotechnic composition based on pentrite is provided in the form of a cylinder generated by rotation having a diameter between 2 mm and 50 mm.

4. Pyrotechnic munition component comprising a structure (1) in the form of a jacket, a solid pyrotechnic charge (4) present in the structure (1), a device (3) for deconfinement of the structure (1) and a safety igniter (5) which makes it possible to bring about the combustion without detonation of the pyrotechnic charge (4) when the munition component is subjected to slow cook off, characterized in that the safety igniter (5) is an igniter according to claim 1.

5. Pyrotechnic munition component according to claim 4, characterized in that the solid pyrotechnic charge (4) present in the structure (1) is an explosive charge.

6. Pyrotechnic munition component according to claim 4, characterized in that the solid pyrotechnic charge (4) present in the structure (1) is a propulsive charge.

7. Pyrotechnic munition component according to claim 4, characterized in that the safety igniter (5) is situated close to the device (3) for deconfinement of the structure (1).

8. Pyrotechnic munition component according to claim 4, characterized in that the safety igniter (5) is at least partially embedded in the solid pyrotechnic charge (4).

9. Process which makes it possible to bring about the combustion without detonation of a solid pyrotechnic charge (4) present in the structure (1) in the form of a jacket of a pyrotechnic munition component when the latter is subjected to slow cook off, the said munition component comprising a device (3) for deconfinement of the structure (1) and a safety igniter (5) which, during slow cook off, reacts by simple combustion at a temperature below the reaction temperature of the pyrotechnic charge (4) and then brings about the combustion without detonation of the pyrotechnic charge (4), characterized in that the safety igniter (5) is an igniter according to claim 1.