A system for extracting threats buried underground includes a housing, a shaped charge coupled to the housing at one end, and an explosive projectile disposed in the housing and spaced-apart from the shaped charge. The explosive projectile includes an open-ended pipe, a detonation line wrapped about the pipe and extending away therefrom and through the housing, an explosive material disposed about and in contact with the detonation line wrapped about the pipe. The explosive projectile also includes a first donut-shaped plate at one end of the pipe, a second donut-shaped plate at another end of the pipe, and a third donut-shaped plate coupled to and spaced-apart from the second donut-shaped plate. A flow path extends through the plates and the pipe.

A system for extracting threats buried underground includes a housing, a shaped charge coupled to the housing at one end, and an explosive projectile disposed in the housing and spaced-apart from the shaped charge. The explosive projectile includes an open-ended pipe, a detonation line wrapped about the pipe and extending away therefrom and through the housing, an explosive material disposed about and in contact with the detonation line wrapped about the pipe. The explosive projectile also includes a first donut-shaped plate at one end of the pipe, a second donut-shaped plate at another end of the pipe, and a third donut-shaped plate coupled to and spaced-apart from the second donut-shaped plate. A flow path extends through the plates and the pipe.

A shaped charge liner including a composition of metal powders. Each metal powder may include one or more grain sizes, which may be different from other powder grain sizes. The metal powders may include transition metal powders, non-transition metal powders, and a bronze metal powder. The metal powders may include a malleable binding metal powder, such as bronze, and a non-malleable binding metal powder. A shaped charge including such liners is also disclosed, as well as a method of making the shaped charge liner, and a shaped charge including such shaped charge liner.

A shaped charge liner including a composition of metal powders. Each metal powder may include one or more grain sizes, which may be different from other powder grain sizes. The metal powders may include transition metal powders, non-transition metal powders, and a bronze metal powder. The metal powders may include a malleable binding metal powder, such as bronze, and a non-malleable binding metal powder. A shaped charge including such liners is also disclosed, as well as a method of making the shaped charge liner, and a shaped charge including such shaped charge liner.

A shaped charge produces a constant velocity jet. The shaped charge is comprised of individual modules which can be assembled to produce a constant velocity jet of arbitrary length. The resulting jet speed is approximately twice the detonation velocity and independent of the liner material. The modular design also allows different liner materials to be used sequentially in the same jet.

A shaped charge produces a constant velocity jet. The shaped charge is comprised of individual modules which can be assembled to produce a constant velocity jet of arbitrary length. The resulting jet speed is approximately twice the detonation velocity and independent of the liner material. The modular design also allows different liner materials to be used sequentially in the same jet.

A shaped charge including an explosive load positioned in a casing, a liner applied on the load, and means ensuring the securing of the casing and the load bearing the liner. These securing means include a ring having a stop surface for the liner and at least two shims each covering an angular sector and moving radially by the action of a tightening means, to be pressed against an inner bearing surface of the casing. According to the invention, the tapped hole of the tightening screw(s) has its axis parallel to the axis of the casing and the shim is positioned axially relative to the ring by at least one radial pin authorizing sliding thereof.

A shaped charge including an explosive load positioned in a casing, a liner applied on the load, and means ensuring the securing of the casing and the load bearing the liner. These securing means include a ring having a stop surface for the liner and at least two shims each covering an angular sector and moving radially by the action of a tightening means, to be pressed against an inner bearing surface of the casing. According to the invention, the tapped hole of the tightening screw(s) has its axis parallel to the axis of the casing and the shim is positioned axially relative to the ring by at least one radial pin authorizing sliding thereof.

A linear shaped charge comprising a body comprising a foam material, a first explosive element, a second explosive element, a liner and a channel at least partly between the first explosive element and the second explosive element. A related structure is also described, with a first cavity configured to receive a first explosive element and a second cavity configured to receive a second explosive element.

Some embodiments are directed to a shaped charge liner including an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner being rotationally symmetric about the main liner axis wherein the liner has discrete rotational symmetry about the main liner axis.