F42C19/0834

Layered energetic material having multiple ignition points

An energetic material having thin, alternating layers of metal oxide and reducing metal is provided. The energetic material may be provided in the form of a sheet, foil, cylinder, or other convenient structure. A method of making the energetic material resists the formation of oxide on the surface of the reducing metal, allowing the use of multiple thin layers of metal oxide and reducing metal for maximum contact between the reactants, without significant lost volume due to oxide formation. An ignition system for the energetic material includes multiple ignition points, as well as a means for controlling the timing and sequence of activation of the individual ignition points. The combination of the energetic material and ignition system provides a means of charge and blast shaping, ignition timing, pressure curve control and maximization, and safe neutralization of the energetic material.

Layered energetic material having multiple ignition points

An energetic material having thin, alternating layers of metal oxide and reducing metal is provided. The energetic material may be provided in the form of a sheet, foil, cylinder, or other convenient structure. A method of making the energetic material resists the formation of oxide on the surface of the reducing metal, allowing the use of multiple thin layers of metal oxide and reducing metal for maximum contact between the reactants, without significant lost volume due to oxide formation. An ignition system for the energetic material includes multiple ignition points, as well as a means for controlling the timing and sequence of activation of the individual ignition points. The combination of the energetic material and ignition system provides a means of charge and blast shaping, ignition timing, pressure curve control and maximization, and safe neutralization of the energetic material.

Hybrid primer
09546857 · 2017-01-17 ·

A hybrid primer device comprising electric primer and chemical primer housed in a percussion cap. The electrical primer comprises single pin or plurality of electrode pin pair. Each electrode pair comprises of at least one anode and cathode pin which are insulated and arranged at predetermined distance from central axis. The length of each pair of anode and cathode pins varies to help create multiple trigger points across the length of the cartridge. The chemical primer provides ignition of propellant in absence of the electric power. Application of high voltage electric pulse across the electrodes generates electric arcs between the pairs at multiple points inside cartridge resulting in instantaneous combustion of the propellant creating a high pressure in the cartridge case which improves the projectile's performance. The electric arcs generated will continue even after the chemical primer is exhausted thus enabling primer to continuously burn the propellant ensuring complete combustion.

Cartridge and system for generating a projectile with a selectable launch velocity

A weapon system includes a cartridge and a fire control apparatus have been developed for generating a projectile with a selectable launch velocity. The cartridge includes multiple primers and propellant chambers which may be individually selected by the fire controller so as to fire the projectile at a selected launch velocity. Additionally after firing the selected primers and propellant charges, the fire controller sends a second firing signal to all remaining primers after a suitable delay. The second firing signal ensures that all remaining propellant is initiated and consumed, thus rendering the cartridge safe to eject. The delay between the first firing signal and the second firing signal is sufficient to allow the projectile to be expelled from the cartridge so that the launch velocity is not affected by the combustion of the remaining propellant.