Shaped charge systems with waveshaper-embedded fuzing

Patent metadata

Field	Value
Publication number	US-12173994-B2
Application number	US-202318308771-A
Country	US
Kind code	B2
Filing date	Apr 28, 2023
Priority date	Apr 28, 2023
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A shaped charge system controlled by an electronic safe and arm device located outside a system chamber comprises a billet of explosive fill material in the chamber, a waveshaper disposed in the explosive material, and a detonator and firing module disposed within the waveshaper.

First claim

What is claimed is:

1. A shaped charge system comprising:
a casing defining an interior chamber and having a forward end and a rearward end;
a shaped charge liner disposed in the chamber;
a billet of explosive fill material disposed in the chamber rearwardly of the liner;
a waveshaper having a predetermined external contour based on desired shaped charge functional characteristics and disposed in the explosive material between the rearward end of the chamber and the liner; and
a detonator and firing module disposed entirely in said waveshaper.

2. The shaped charge system of claim 1 , further comprising:
an electronic safe and arm device located proximate said rearward end outside said chamber outside said chamber; and
electrical conductors configured to conduct electrical signals between said safe and arm device and said firing module.

3. The shaped charge system of claim 2 , further comprising;
a booster disposed between said safe and arm device and said waveshaper within said explosive material and detonatable by an electric signal from said safe and arm device to create a small explosion that causes the billet explosive material to explode.

4. The shaped charge system of claim 3 , wherein said electrical conductors surround said booster to electrically connect said safe and arm device to said firing module.

5. The shaped charge system of claim 4 wherein said firing module comprises components disposed on a flexible printed circuit board located within the waveshaper.

6. The shaped charge system of claim 2 wherein said electrical conductors are electrically conductive traces that extend forwardly from said safe and arm device and then radially outward in angularly spaced relation before bending forwardly to the waveshaper to connect with the firing module.

7. The shaped charge system of claim 6 wherein said electrically conductive traces are arranged in an array in which successive traces are equiangularly spaced from one another.

8. The shaped charge system of claim 6 wherein the firing module comprises components disposed on a flexible printed circuit board having forward and rearward facing surfaces, and wherein said detonator is disposed on said rearward facing surface and configured to direct detonation waves initially in a rearward direction.

9. The shaped charge system of claim 2 wherein the firing module comprises components disposed on a flexible printed circuit board having forward and rearward facing surfaces, and wherein said detonator is disposed on said rearward facing surface and configured to direct detonation waves initially in a rearward direction.

10. A shaped charge system comprising:
a billet of explosive fill material;
a waveshaper disposed in the explosive material; and
a detonator and firing module disposed entirely within said waveshaper.

11. The shaped charge system of claim 10 further comprising:
an electronic safe and arm device located separate and apart from said explosive material; and
electrical conductors configured to conduct electrical signals between said safe and arm device and said firing module.

12. The shaped charge system of claim 11 wherein the firing module comprises components disposed on a flexible printed circuit board having forward and rearward facing surfaces, and wherein said detonator is disposed on said rearward facing surface and configured to direct detonation waves initially in a rearward direction.

13. A method for initiating detonation waves in a shaped charge system comprising:
in response to a trigger signal, initiating an electrical detonation signal from an electronic safe and arm device located outside a chamber containing a billet of explosive material; and
in response to said electrical detonation signal, creating detonation waves in said billet of explosive material from a location entirely within a waveshaper embedded in the explosive material.

14. The method of claim 13 wherein the detonation waves are initially directed rearwardly of the waveshaper and are deflected by a rearward chamber wall forwardly and around the waveshaper.

15. The method of claim 13 wherein said electronic safe and arm device is located adjacent a rearward end wall of said chamber and wherein said detonation signal is conducted through an access opening in said rearward end wall.

Assignees

• L3Harris Technologies Inc

Inventors

• Spears Zac
• Hill Scott
• Ashley Scott
• Kerrigan Rita
• Sweitzer Justin
• Simmons David

Classifications

• F42B12/16 Primary

  in combination with an additional projectile or charge, acting successively on the target {(see also F42B12/625)} · CPC title

• F42C15/40

  wherein the safety or arming action is effected electrically · CPC title

• F42B1/028

  characterised by the form of the liner · CPC title

• F42B1/024 Primary

  provided with embedded bodies of inert material · CPC title