US2025290735A1PendingUtilityA1

Ignition system, propellant charge and piece of ammunition

53
Assignee: RHEINMETALL WAFFE MUNITION GMBHPriority: Nov 30, 2022Filed: May 29, 2025Published: Sep 18, 2025
Est. expiryNov 30, 2042(~16.4 yrs left)· nominal 20-yr term from priority
F42C 19/083F42C 19/0826
53
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Claims

Abstract

An ignition system for igniting a propellant charge for a projectile. A channel extends along a channel longitudinal direction and is outwardly delimited by a wall. A primary ignition material in the form of powder granules or prepared fibers is contained in the channel. The powder granules or prepared fibers collectively fill the channel such that, when ignited, a flash-through of the primary ignition material occurs. Also provided are a propellant charge and a piece of ammunition.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An ignition system for igniting a propellant charge for a projectile, the ignition system comprising:
 a channel that extends along a channel longitudinal direction and that is outwardly delimited by a wall; and   a primary ignition material in the form of powder granules or prepared fibers contained in the channel,   wherein the powder granules or prepared fibers collectively fill the channel such that, when ignited, a flash-through of the primary ignition material occurs.   
     
     
         2 . The ignition system according to  claim 1 , wherein the primary ignition material contains black powder or mixtures based on charcoal, sulfur, boron and oxygen carriers, nitrates, perchlorates, or boron potassium nitrate. 
     
     
         3 . The ignition system according to  claim 1 , wherein the prepared fibers are designed as textile synthetic or natural fibers partially or completely covered with ignition material. 
     
     
         4 . The ignition system according to  claim 1 , wherein the primary ignition material has such a high ignition power that this is sufficient for igniting the propellant charge. 
     
     
         5 . The ignition system according to  claim 1 , wherein at least one shock tube extends through the channel. 
     
     
         6 . The ignition system according to  claim 1 , wherein the powder granules or the prepared fibers of the primary ignition material are applied to a separate carrier material, and wherein the carrier material with the powder granules or the prepared fibers are arranged in the channel. 
     
     
         7 . The ignition system according to  claim 1 , wherein a further wall is provided which surrounds the channel delimited outwardly by the wall such that a further channel is defined in the intermediate space between the wall and the further wall. 
     
     
         8 . The ignition system according to  claim 7 , wherein a further ignition material or a main ignition material is contained in the further channel. 
     
     
         9 . The ignition system according to  claim 1 , wherein a further wall extends along the channel longitudinal direction of the channel and divides the channel into a first channel portion and a second channel portion, wherein the primary ignition material is contained in the first channel portion, and wherein a further ignition material or a main ignition material is contained in the second channel portion. 
     
     
         10 . The ignition system according to  claim 1 , wherein a further wall is provided that is arranged within the channel and surrounds a further channel to the outside, wherein the further channel extends within the channel, and wherein a further ignition material or a main ignition material is contained in the further channel. 
     
     
         11 . The ignition system according to  claim 10 , wherein the further channel has at least two segments arranged axially one behind the other and separated from one another, the segments being spaced apart from one another along a channel longitudinal direction. 
     
     
         12 . The ignition system according to  claim 1 , wherein one or more transitions are formed between the channel and a further channel or between a first channel portion and a second channel portion. 
     
     
         13 . A propellant charge for a projectile, the propellant charge comprising:
 a propellant powder; and   an ignition system according to  claim 1 , the ignition system being arranged in or on the propellant powder.   
     
     
         14 . A piece of ammunition comprising a projectile and a propellant charge according to  claim 13 .

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