Practice ammunition

Abstract

A practice ammunition projectile comprises a head which bursts when the projectile strikes a target and contains a marking agent which optically indicates the point of impact after the head has burst. The marking agent consists of several chemical components ( 7, 8 ) which are each contained in separately breakable compartments ( 4, 5 ) within a burstable hood at the head of the projectile. When the compartments ( 4, 5 ) break open the compartments combine and undergo a chemical reaction which creates an optical mark. The hood is formed of an optically transparent material to enable the trajectory of the projectile to be tracked.An ammunition cartridge comprising a hollow projectile and a cartridge case with a propellant charge, the projectile comprising a projectile head designed to withstand the forces applied when the projectile is fired from a gun and designed to burst when the projectile strikes a target. A marking agent is disposed in the head for optically marking the impact with the target after the head has burst. The marking agent includes a plurality of chemical components each received in a separate frangible compartment in the head. These components are mixed and react chemically with each other when the compartments break up, causing the mixed components to luminesce. The compartments are designed to be broken up by the initial acceleration and/or the centrifugal forces on the projectile when the projectile is fired from a gun, while retaining the chemical components in the head. The components are therefore mixed at the time the projectile is fired from a gun and luminesce by the time the projectile strikes the target.

1. In a practice  An ammunition projectile  cartridge comprising a hollow projectile and a cartridge case with a propellant charge, the projectile comprising a projectile head designed to withstand the forces applied when the projectile is fired from a gun and designed to burst when the projectile strikes a target and to receive ; wherein a marking agent is disposed in the head for optically indicating  marking the impact with the target after the head has burst, ; wherein said marking agent contained in a burstable hood at the head of the practice projectile and comprising  includes a plurality of chemical components each received in a separate frangible compartment in the head, said components being mixed and reacting chemically with each other as  when the compartments break up, causing the optical marking reaction to be produced, the improvement  mixed components to luminesce; and wherein the compartments are adapted  designed to be broken up by at least one of the initial acceleration and the centrifugal forces on the projectile when in use, and wherein the hood is formed of an optically transparent material to enable the trajectory of the projectile to be tracked  the projectile is fired from a gun, while retaining the chemical components in the head;
   whereby the components are mixed at the time the projectile is fired from a gun and luminesce by the time the projectile strikes the target .  
 
     
     
       2. Practice ammunition projectile  Ammunition cartridge as in  claim 1 , wherein the optical marking is visible in the infrared range. 
     
     
       3. Practice ammunition projectile  Ammunition cartridge as in  claim 1 , wherein the optical marking emits light in the visible and infrared ranges. 
     
     
       4. Practice ammunition projectile  Ammunition cartridge as in  claim 1 , wherein the compartments are separated by partitions and said partitions have predetermined breaking points therein. 
     
     
       5. Ammunition cartridge as in  claim 1 , wherein the head includes a burstable hood formed of an optically transparent material and containing the marking agent to enable the trajectory of the projectile to be tracked.