초록 ▼

A shaped charge explosive device which includes an axially symmetric body of explosive material, a liner lining the forward end of the body, and a detonator disposed at the bottom of the body. The liner has an apex disposed along the symmetry axis of the body and the forward end of the body contains

A shaped charge explosive device which includes an axially symmetric body of explosive material, a liner lining the forward end of the body, and a detonator disposed at the bottom of the body. The liner has an apex disposed along the symmetry axis of the body and the forward end of the body contains a gas filled cavity which overlaps the apex of the liner. When the detonator detonates the explosive material, a detonation wave is produced that collapses the liner into a plurality of liner parts which are projected against an external target. The gas filled cavity shapes the detonation wave so that the detonation wave impacts the liner at the most favorable angle to transfer energy to the liner and maximize the effective penetration of the external target by the projected liner parts.

대표청구항 ▼

What is claimed as new and desired to be secured by Letters Patent of the United States is: 1. A shaped charge explosive device comprising: an axially symmetric body of explosive material having a forward end and a rear end; a liner lining the forward end of the body, the liner having an apex lying

What is claimed as new and desired to be secured by Letters Patent of the United States is: 1. A shaped charge explosive device comprising: an axially symmetric body of explosive material having a forward end and a rear end; a liner lining the forward end of the body, the liner having an apex lying along the symmetry axis of the body; a detonator disposed at the rear end of the body for detonating the explosive material to produce a detonation wave to collapse the liner into a plurality of parts and project the liner parts against an external target; and a cavity formed in the forward end of the body, the cavity having a base portion defined by the explosive material that is substantially parallel to the rear end of the body, and the cavity having wall portions defined by the explosive material that extends from the base portion to the liner, and the apex of the liner projects into the cavity so that the cavity overlaps the apex of the liner. 2. The shaped charge explosive device of claim 1, wherein the liner is a conical liner. 3. The shaped charge explosive device of claim 1, wherein the cavity has a frustoconical configuration with a truncated apex and a flat base portion, the truncated apex facing and overlapping the apex of the liner and the base portion facing the rear end of the explosive material body. 4. The shaped charge explosive device of claim 1, wherein the cavity is arranged coaxially with respect to the symmetry axis of the explosive charge body. 5. The shaped charge explosive device of claim 1, wherein the cavity is filled with air, nitrogen, helium, or argon. 6. The shaped charge explosive device of claim 1, wherein the cavity is filled with air. 7. The shaped charge explosive device of claim 1, wherein the cavity is filled with a gas at or above atmospheric pressure. 8. The shaped charge explosive device of claim 1, wherein the liner has a conical shape and the base of the conical liner defines a plane that is perpendicular to the symmetry axis. 9. The shaped charge explosive device of claim 1, wherein the base portion of the cavity has a width that is from about one-fourth to about one-half the width of the body of explosive material, the cavity has a volume of from about 10% to about 50% of the volume of the shaped charge, and the length of the portion of the liner that is overlapped by the cavity is from about 10% to about 50% of the length of the surface of the liner. 10. The shaped charge explosive device of claim 9, wherein the liner is a conical liner. 11. The shaped charge explosive device of claim 9, wherein the cavity has a frustoconical configuration with a truncated apex and a base portion, the truncated apex facing and overlapping the apex of the liner and the base portion facing the rear end of the explosive material body. 12. The shaped charge explosive device of claim 9, wherein the cavity is arranged coaxially with respect to the symmetry axis of the explosive charge body. 13. The shaped charge explosive device of claim 9, wherein the cavity is filled with air, nitrogen, helium, or argon. 14. A shaped charge explosive device comprising: an axially symmetric body of explosive material having a forward end and a rear end; a liner lining the forward end of the body, the liner having an apex lying along the symmetry axis of the body; a detonator disposed at the rear end of the body for detonating the explosive material to produce a detonation wave to collapse the liner into a plurality of parts and for projecting the liner parts against an external target; and a cavity formed in the forward end of the body, wherein the walls of the cavity overlap the apex of the liner for shaping a detonation wave produced upon detonation of the explosive material so that the wave impacts the liner to transfer energy to the liner and to maximize the effective penetration of the external target by the projected liner parts, wherein the volume of the cavity is from about 1% to about 50% of the volume of the explosive material, wherein the length of the wall portion of the liner that is overlapped by the cavity is from about 10% to about 75% the slant height of the liner, and wherein the angle of the apex of the conical liner is from about 20 degrees to about 120 degrees, wherein the cavity overlaps a portion of the apex of the hollow liner equivalent to about 1% to about 50% of the total volume of the conical liner, wherein the cavity has a frustoconical shape with a base portion having walls that converge from the base portion to the apex of the liner. 15. The shaped charge explosive device of claim 14, wherein the length of the wall portion of the liner that is overlapped by the cavity is from about 10% to about 30% of the slant height of the liner. 16. The shaped charge explosive device of claim 14, wherein the angle of the apex of the conical liner is from about 35 degrees to about 50 degrees. 17. The shaped charge explosive device of claim 14, wherein the cavity has a truncated apex facing frustoconical configuration with a truncated apex and a base, the truncated apex facing and overlapping the apex of the liner and the base facing the explosive material body, wherein the wall surfaces of the truncated apex of the cavity form angles of from about 10 degrees to about 85 degrees with the base of the cavity. 18. The shaped charge explosive device of claim 17, wherein the wall surfaces of the truncated apex of the cavity form angles of from about 45 degrees to about 75 degrees with the base of the cavity. 19. The shaped charge explosive device of claim 14, wherein the width of the explosive charge is from about 0.4 to about 200 centimeters. 20. The shaped charge explosive device of claim 14, wherein the cavity is filled with air, nitrogen, helium, or argon. 21. The shaped charge explosive device of claim 20, wherein the cavity is filled with air. 22. The shaped charge explosive device of claim 14, wherein the cavity is filled with a gas at or above atmospheric pressure. 23. The shaped charge explosive device of claim 14, further comprising a hollow cylindrical housing surrounding the explosive material to contain the explosive material body, liner, detonator and cavity, and wherein the cylindrical housing has an axis disposed coaxially with respect to an axis of symmetry of the explosive material body.