WO1999001713A2 - Shaped charge liner and method for its production - Google Patents

Shaped charge liner and method for its production Download PDF

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Publication number
WO1999001713A2
WO1999001713A2 PCT/US1998/010586 US9810586W WO9901713A2 WO 1999001713 A2 WO1999001713 A2 WO 1999001713A2 US 9810586 W US9810586 W US 9810586W WO 9901713 A2 WO9901713 A2 WO 9901713A2
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WO
WIPO (PCT)
Prior art keywords
liner
velocity
metal
middle segment
tip
Prior art date
Application number
PCT/US1998/010586
Other languages
French (fr)
Other versions
WO1999001713A3 (en
Inventor
Joseph P. Turci
Tan Hung Vuong
Gerard P. Voohis
Original Assignee
United States Of America
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United States Of America filed Critical United States Of America
Priority to AU10599/99A priority Critical patent/AU1059999A/en
Priority to PCT/US1998/010586 priority patent/WO1999001713A2/en
Publication of WO1999001713A2 publication Critical patent/WO1999001713A2/en
Publication of WO1999001713A3 publication Critical patent/WO1999001713A3/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/032—Shaped or hollow charges characterised by the material of the liner

Definitions

  • the invention is directed to improved shaped charge liners, methods of making the same, munitions containing the liners and the use of the munitions to clear minefields.
  • the liner is an elongated, generally conical metal such as copper. It can be formed by deep drawing and is assembled with an explosive and body to form a munition such as a grenade. The explosion causes the liner to form a jet and a large trailing slug.
  • the jet has a high velocity tip and a medium velocity middle segment.
  • the liner is of substantially uniform cross-sectional thickness and has an apex, a central region and a base. There is an outwardly extending segment in the central region which is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has sufficient energy to penetrate soil.
  • Figure 1-A illustrates a profile in cross-section of a munition having a body, explosive fill and liner combination according to the invention.
  • the liner has an outwardly extending segment in its central region. Its apex is shown with a large radius. In the base, the bottom meets the body in a full calibre design..
  • Figure 1-B presents a photo (A) of liners in full frontal view where the liners have outward extensions of various length and angle of inclination. This illustrates that deep drawing can be used to form a wide range of shapes including liners that have structures according to the invention.
  • the liner on the left side has an outwardly extending segment with a configuration similar to that shown in Figure 1-A.
  • the corresponding radiograph for the jet structure for this configuration is shown in the lower photo (B) . It can be seen that a stable radially extending mass of metal has been formed in the middle segment.
  • Figure 1-C is a radiograph of the jet formed by a liner as shown in Figure 1-A.
  • Figures 1-B and 1-C show that the structure of the outwardly extending segment can be used to control the flow of metal from the liner to the jet and to the slug.
  • the structure and location of the outwardly extending segment will allow for the control of the flow of the metal into the jet and to desired locations anywhere along the jet.
  • An important application is to flow metal into the middle segment to increase the energy to a level at which the middle segment can penetrate and explode munitions.
  • Another important application of this principle is to form a large radially extending mass of metal in the middle segment of the jet and this can be located toward the slug. It may and preferably will include directing a flow to form a thickened section between the middle segment and the tip. It is desired to attain sufficient energy that if the munition were to be TNT, it could be burned or exploded by the munition of this invention.
  • Figure 1-D shows a boundary plot for the jet of Figures 1-B and 1-C. It can be seen that the gases from the explosives side of the liner have broken past the flowing metal and interrupt it so that the radially extending mass in the middle segment has broken into separate pieces .
  • Figure 1-E is a plot of cumulative energy versus position for a typical shaped charge jet used in mine clearing.
  • Figure 1-F is a radiograph of the slug and jet from the liner of Figure 1-A.
  • the trailing slug, the main radially extending mass in the middle segment, the secondary radially extending mass and the tip are prominent. It can be seen that the mass in the middle segment is at a position different from its order in the liner at time zero.
  • the invention features control of position of metal in the jet by a liner design that is relatively inexpensive and can be made at high production rates with conventional tooling which can be other than the relative position the metal had in the liner.
  • Figure 2-A is a profile in cross section of a munition having a body and liner combination according to the invention.
  • the outwardly extending segment of the central region is in the form of a curve.
  • the Figure is to scale.
  • Figure 2-B is a profile in cross-section of the liner of Figure 2-A. The complete dimensions for the liner are shown.
  • the curve of the outwardly extending segment is an approximation of having straight front, middle and rear parts in the segment.
  • Figure 2-C is the profile of Figure 2-B with only the overall dimensions and liner thickness shown but otherwise to scale.
  • Figure 2-D is a boundary plot of the jet formed by the liner of Figure 2-A at 15 microseconds.
  • the jet is about 5 cm. In length.
  • the tip is at the right.
  • the middle segment is from the tip to the left side.
  • the radially extending mass on the left side is the result of the control of the movement of the metal into the jet by the structure of the outwardly extending segment and substantially uniform thickness of the liner according to the invention.
  • Figure 2-E is a boundary plot of the jet formed by the liner of Figure 2-A at 20 microseconds. The jet has lengthened and the radial extension of the mass in the middle segment has become more pronounced.
  • Figure 2-F is a plot of particle velocity vs. particle position for the metal in the jet at 20 microseconds for the liner of Figure 2-A; the curve is generally from lower left to upper right.
  • the Y axis is velocity and the x axis is distance.
  • the inflections in the curve correspond to masses of metal along the jet.
  • Figure 3-A a profile in cross section of a munition having a body and liner combination according to the invention; the munition has the large-radius apex and full calibre construction.
  • the outwardly extending segment has a combination of curvilinear and near linear elements.
  • Figure 3-B is a half cross-section of the liner of Figure 3- A; the cross-sectional thickness and other dimensions are shown.
  • Figure 3-C is a half cross-section of the inner surface of the liner of Figure 3-A, the dimensions for locating its elements are shown.
  • Figure 3-D is a half cross-section of the outer surface of the liner of Figure 3-A; the dimensions for locating its elements are shown.
  • Figure 3-E is a boundary plot of the jet of Figure 3-A at 15 microseconds.
  • the trailing slug, large radially extending mass in the middle section and the coherent jet are prominent.
  • Figure 3-F is an enlarged view of the jet section of Figure 3-E.
  • the radially extending mass of the middle is behind a thickened section that extends to the tip.
  • the thickened section is about 30% thicker than the comparable section in the jet of the liner of Figure 2-A.
  • Figure 4 is a pictorial representation of the deployment of a system in which shaped charge munitions are attached to cords of nets and deployed by a rocket.
  • the rocket and net can be carried in a trailer or other vehicle.
  • the net may be large or small according to whether small paths or wide paths are to be obtained.
  • the detail of the assembly and the cross-sectional profile of the munition are also shown, This is similar to the deployments described in USP 5675104.
  • One type of net and munition attachment for practice with the current invention is that shown in USP 5524524, Richards, et al . , and USP 5675104, Schorr, et al .
  • the explosion of the munition with its standoff shows the effect of the liner in creating a jet that can penetrate overburden and explode munitions under the severe performance requirements of buried mine fields where there is the need to penetrate the overburden and also the munition.
  • the overburden may be relatively soft materials such as water or soil or sand or relatively hard materials such as rock or concrete or mixtures of materials .
  • Figures 5-A through 5-C are particularly concerned with the improved method of manufacture according to this invention.
  • the method consists essentially of deep drawing, annealing and coining.
  • the deep drawing will begin with a metal form such as a round sheet or strip. It will perform successive draws on the metal to elongate the conical form.
  • the annealing is used to remove cold worked microstructure from the shaped metal.
  • the coining will straighten the sides and reach target dimensions. %he outwardly extending segment can be formed in one coining step or there may be two or coining steps in which the final step forms the outwardly extending segment. There may be intermittent annealing between the coining steps. This is to remove cold worked microcrystalline structure from the liner.
  • the liner of the invention does not require additional steps such as forging or swaging to form variable wall thickness liners or the like.
  • the method of manufacture of the invention is substantially the same as that used for shaped charge liners of uniform wall thickness that have straight walls and is suited to high rate production and can substantially reduce the cost of clearing minefields.
  • Figure 5-A is an illustration of the cross-sections of the liners of the invention compared to the typical straight walled liners for demonstrating the ready applicability of available deep-draw and coining technique for making the high performance liners of the invention.
  • Figure 5-B is a photo of coining dies to produce liners with increasing outward extensions in their central regions.
  • the liner on the left side has an extension as shown in Figure 1-A.
  • This method is capable of forming the shaped charge liner even when extreme extensions are involved. illustrates that the method of deep drawing and coining can be applied to produce

Abstract

An improved shaped charge liner for the use of minefield clearance. The liner being elongated and of substantially uniform cross-sectional thickness with an apex, a central region, and a base. It is assembled with an explosive body to form a munition such as a grenade. The explosion causing the liner to form a high velocity tip, a medium velocity middle segment, and a large trailing slug. There is an outwardly extending segment in the central region which is adapted to flow metal into the high velocity tip to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has sufficient energy to penetrate soil.

Description

Title: Shaped Charge Liners, Methods of Making the Same, and the Related Munitions and minefield Clearing
Summary of Invention
The invention is directed to improved shaped charge liners, methods of making the same, munitions containing the liners and the use of the munitions to clear minefields. The liner is an elongated, generally conical metal such as copper. It can be formed by deep drawing and is assembled with an explosive and body to form a munition such as a grenade. The explosion causes the liner to form a jet and a large trailing slug. The jet has a high velocity tip and a medium velocity middle segment. The liner is of substantially uniform cross-sectional thickness and has an apex, a central region and a base. There is an outwardly extending segment in the central region which is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has sufficient energy to penetrate soil. The variations and preferred embodiments are discussed below.
Description of Invention and the Figures Figure 1-A illustrates a profile in cross-section of a munition having a body, explosive fill and liner combination according to the invention. The liner has an outwardly extending segment in its central region. Its apex is shown with a large radius. In the base, the bottom meets the body in a full calibre design..
Figure 1-B presents a photo (A) of liners in full frontal view where the liners have outward extensions of various length and angle of inclination. This illustrates that deep drawing can be used to form a wide range of shapes including liners that have structures according to the invention.. The liner on the left side has an outwardly extending segment with a configuration similar to that shown in Figure 1-A. The corresponding radiograph for the jet structure for this configuration is shown in the lower photo (B) . It can be seen that a stable radially extending mass of metal has been formed in the middle segment.
Figure 1-C is a radiograph of the jet formed by a liner as shown in Figure 1-A. Figures 1-B and 1-C show that the structure of the outwardly extending segment can be used to control the flow of metal from the liner to the jet and to the slug. By this invention it has been found that the structure and location of the outwardly extending segment will allow for the control of the flow of the metal into the jet and to desired locations anywhere along the jet. An important application is to flow metal into the middle segment to increase the energy to a level at which the middle segment can penetrate and explode munitions. Another important application of this principle is to form a large radially extending mass of metal in the middle segment of the jet and this can be located toward the slug. It may and preferably will include directing a flow to form a thickened section between the middle segment and the tip. It is desired to attain sufficient energy that if the munition were to be TNT, it could be burned or exploded by the munition of this invention.
Figure 1-D shows a boundary plot for the jet of Figures 1-B and 1-C. It can be seen that the gases from the explosives side of the liner have broken past the flowing metal and interrupt it so that the radially extending mass in the middle segment has broken into separate pieces .
Figure 1-E is a plot of cumulative energy versus position for a typical shaped charge jet used in mine clearing.
Figure 1-F is a radiograph of the slug and jet from the liner of Figure 1-A. The trailing slug, the main radially extending mass in the middle segment, the secondary radially extending mass and the tip are prominent. It can be seen that the mass in the middle segment is at a position different from its order in the liner at time zero. The invention features control of position of metal in the jet by a liner design that is relatively inexpensive and can be made at high production rates with conventional tooling which can be other than the relative position the metal had in the liner.
Figure 2-A is a profile in cross section of a munition having a body and liner combination according to the invention. In the liner, the outwardly extending segment of the central region is in the form of a curve. The Figure is to scale.
Figure 2-B is a profile in cross-section of the liner of Figure 2-A. The complete dimensions for the liner are shown. The curve of the outwardly extending segment is an approximation of having straight front, middle and rear parts in the segment.
Figure 2-C is the profile of Figure 2-B with only the overall dimensions and liner thickness shown but otherwise to scale.
Figure 2-D is a boundary plot of the jet formed by the liner of Figure 2-A at 15 microseconds. The jet is about 5 cm. In length. The tip is at the right. The middle segment is from the tip to the left side. The radially extending mass on the left side is the result of the control of the movement of the metal into the jet by the structure of the outwardly extending segment and substantially uniform thickness of the liner according to the invention.
Figure 2-E is a boundary plot of the jet formed by the liner of Figure 2-A at 20 microseconds. The jet has lengthened and the radial extension of the mass in the middle segment has become more pronounced.
Figure 2-F is a plot of particle velocity vs. particle position for the metal in the jet at 20 microseconds for the liner of Figure 2-A; the curve is generally from lower left to upper right. The Y axis is velocity and the x axis is distance. The inflections in the curve correspond to masses of metal along the jet. Figure 3-A a profile in cross section of a munition having a body and liner combination according to the invention; the munition has the large-radius apex and full calibre construction. In the liner, the outwardly extending segment has a combination of curvilinear and near linear elements.
Figure 3-B is a half cross-section of the liner of Figure 3- A; the cross-sectional thickness and other dimensions are shown.
Figure 3-C is a half cross-section of the inner surface of the liner of Figure 3-A, the dimensions for locating its elements are shown.
Figure 3-D is a half cross-section of the outer surface of the liner of Figure 3-A; the dimensions for locating its elements are shown.
Figure 3-E is a boundary plot of the jet of Figure 3-A at 15 microseconds. The trailing slug, large radially extending mass in the middle section and the coherent jet are prominent.
Figure 3-F is an enlarged view of the jet section of Figure 3-E. The radially extending mass of the middle is behind a thickened section that extends to the tip. The thickened section is about 30% thicker than the comparable section in the jet of the liner of Figure 2-A.
Figure 4 is a pictorial representation of the deployment of a system in which shaped charge munitions are attached to cords of nets and deployed by a rocket. The rocket and net can be carried in a trailer or other vehicle. The net may be large or small according to whether small paths or wide paths are to be obtained. The detail of the assembly and the cross-sectional profile of the munition are also shown, This is similar to the deployments described in USP 5675104. One type of net and munition attachment for practice with the current invention is that shown in USP 5524524, Richards, et al . , and USP 5675104, Schorr, et al .
The explosion of the munition with its standoff shows the effect of the liner in creating a jet that can penetrate overburden and explode munitions under the severe performance requirements of buried mine fields where there is the need to penetrate the overburden and also the munition. The overburden may be relatively soft materials such as water or soil or sand or relatively hard materials such as rock or concrete or mixtures of materials . The
Figures 5-A through 5-C are particularly concerned with the improved method of manufacture according to this invention. The method consists essentially of deep drawing, annealing and coining. The deep drawing will begin with a metal form such as a round sheet or strip. It will perform successive draws on the metal to elongate the conical form. The annealing is used to remove cold worked microstructure from the shaped metal. The coining will straighten the sides and reach target dimensions. %he outwardly extending segment can be formed in one coining step or there may be two or coining steps in which the final step forms the outwardly extending segment. There may be intermittent annealing between the coining steps. This is to remove cold worked microcrystalline structure from the liner.
The liner of the invention does not require additional steps such as forging or swaging to form variable wall thickness liners or the like. The method of manufacture of the invention is substantially the same as that used for shaped charge liners of uniform wall thickness that have straight walls and is suited to high rate production and can substantially reduce the cost of clearing minefields.
Figure 5-A is an illustration of the cross-sections of the liners of the invention compared to the typical straight walled liners for demonstrating the ready applicability of available deep-draw and coining technique for making the high performance liners of the invention.
Figure 5-B is a photo of coining dies to produce liners with increasing outward extensions in their central regions. The liner on the left side has an extension as shown in Figure 1-A. This method is capable of forming the shaped charge liner even when extreme extensions are involved. illustrates that the method of deep drawing and coining can be applied to produce

Claims

liners with the outwardly extending segments that control flow of metal into the jet as previously described.
Figure 5-C is a profile in cross-section of a specific Top Punch and Bottom coining Die for producing the liner illustrated in Figure 1-A and 6-A. The dimensions of the Punch and Die are given. The smoothed conical metal piece would be inserted between them and the outwardly extending segment would be formed with the substantially uniform sectional thickness of the liner.
We claim:
1.) An elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low- velocity slug, the jet having a high-velocity tip segment and a medium-velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil.
2. ) The liner of Claim 1 where the middle segment has a velocity of at least about 5 km/sec.
3. ) The liner of Claim 1 where the middle segment has a velocity of at least about 5 km/sec and it includes a large, radially- extending mass of metal .
4.) The liner of Claim 1 where the middle segment has a velocity of at least about 5 km/sec and it includes a large, radially- extending mass of metal located toward the slug
5.) The liner of Claim 1 where the middle segment has a velocity of at least about 5 km/sec, the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip.
6.) The liner of Claim 1 where the velocity of the tip segment is at least about 9 km/sec.
7. ) The liner of Claim 1 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal.
8.) The liner of Claim 1 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal located toward the slug.
9.) The liner of Claim 1 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip.
10.) The liner of Claim 1 where the middle segment includes a large, radially-extending mass of metal.
11.) The liner of Claim 1 where the middle segment includes a large, radially-extending mass of metal located toward the slug.
12.) The liner of Claim 1 where the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip.
13) The liner of Claim 1 where the metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium.
14.) The liner of Claim of Claim 1 where the metal is copper.
15.) The liner of Claim 1 where the difference between the velocity of the tip segment and the velocity of the middle segment is about 3.7 to 4 km/sec.
16.) The liner of Claim 1 where the base has a diameter of about 1.50 inches and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 70. 17.) The liner of Claim 1 where the base has a diameter of about 1.50 inches and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 90. 18.) The liner of Claim 1 where the base has a diameter of about 1.50 inches, the tip has a velocity of at least about 9km/sec and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 70.
19.) The liner of Claim 1 where the base has a diameter of about 1.50 inches, the tip has a velocity of at least about 9km/sec and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 90.
20.) An elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low- velocity slug, the jet having a high-velocity tip segment and a medium-velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that includes a forward part disposed toward the apex and a rearward part disposed toward the base, and where the forward part provides a relatively slow flow of metal and the rearward part provides a relatively fast flow of metal that is adapted to flow into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil.
21.) The liner of Claim 20 where the middle segment has a velocity of at least about 5 km/sec.
22.) The liner of Claim 20 where the middle segment has a velocity of at least about 5 km/sec and it includes a large, radially-extending mass of metal.
23) The liner of Claim 20 where the middle segment has a velocity of at least about 5 km/sec and it includes a large, radially-extending mass of metal located toward the slug
24.) The liner of Claim 20 where the middle segment has a velocity of at least about 5 km/sec, the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip.
25.) The liner of Claim 20 where the velocity of the tip segment is at least about 9 km/sec.
26.) The liner of Claim 20 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal.
27.) The liner of Claim 20 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal located toward the slug.
28.) The liner of Claim 20 where the velocity of the tip segment is at least about 9 km/sec and the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip. 29.) The liner of Claim 20 where the middle segment includes a large, radially-extending mass of metal.
30.) The liner of Claim 20 where the middle segment includes a large, radially-extending mass of metal located toward the slug. 31.) The liner of Claim 20 where the middle segment includes a large, radially-extending mass of metal located toward the slug and a thickened section between the middle segment and the tip. 32.) The liner of Claim 20 where the metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium.
33.) The liner of Claim 20 where the metal is copper. 34.) The liner of Claim 20 where the difference between the velocity of the tip segment and the velocity of the middle segment is about 3.7 to 4 km/sec.
35.) The liner of Claim 20 where the base has a diameter of about 1.50 inches and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 70. 36.) The liner of Claim 20 where the base has a diameter of about 1.50 inches and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 90. 37.) The liner of Claim 20 where the base has a diameter of about 1.50 inches, the tip has a velocity of at least about 9km/sec and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 70.
38.) The liner of Claim 20 where the base has a diameter of about 1.50 inches, the tip has a velocity of at least about 9km/sec and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 90. 39.) The liner of Claim 20 where the base has a diameter of about 1.50 inches, the tip has a velocity of at least about 9km/sec and the energy of the middle segment expressed as velocity and mass in the formula V2D is at least about 90 , the middle segment has a large radially-extending mass of metal located toward the slug and the region of the jet between the middle segment and the jet is thickened.
Claim 40) An elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low- velocity slug, the jet having a high-velocity tip segment and a medium-velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section containing a forward part disposed toward the apex, a middle part and a rearward part disposed toward the base, where the forward part provides a relatively slow flow of metal, the middle part provides a medium flow of metal and the rearward part provides a relatively fast flow of metal into the jet that is adapted to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil.
41.) The liner of Claim 40 where the forward part has a short radius of curvature and the middle part has a short radius of curvature .
42.) The liner of Claim 40 where the metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium.
43.) The liner of Claim of Claim 40 where the metal is copper. 44) An elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low- velocity slug, the jet having a high-velocity tip segment capable of penetrating soil and a medium-velocity middle segment, the liner having an apex, a central region and a base of substantially uniform wall thickness, the central region containing an outwardly extending wall section having an undulating curve which is adapted to flow metal into the jet to provide at least the middle segment with sufficient energy to penetrate and explode munitions while the tip has sufficient energy to penetrate soil .
45.) The liner of Claim 43 where the undulating curve includes a forward part with a short radius of curvature, a middle part with a short radius of curvature, and a rearward part with a long radius of curvature .
46.) The liner of Claim 43 where the forward part provides a slow flow of metal, the middle part provides a medium flow of metal and the rearward part provides a fast flow of metal into the jet.
47.) The liner of Claim 43 where the metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium.
48.) The liner of Claim 43 where the metal is copper. 47.) An elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low- velocity slug, the jet having a high-velocity tip segment capable of penetrating soil and a medium-velocity middle segment, the liner having an apex, a central region and a base of substantially uniform wall thickness, the central region containing an outwardly extending wall section which has a forward part disposed toward the apex, a middle part, and a rearward part disposed toward the base, the length and angle of inclination of the forward part providing a relatively slow flow of metal, the length and angle of inclination of the middle part providing a medium flow of metal and the length and angle of inclination of the rearward part providing a relatively fast flow of metal into the jet to provide at least the middle segment with sufficient energy to penetrate and explode munitions and to increase the thickness of the jet between the middle region and the tip.
48.) The liner of Claim 47 where the middle segment has a large radially extending mass of metal.
49.) The liner of Claim 47 where the middle segment has a large radially extending mass of metal located toward the slug. 50.) The liner of Claim 47 where the metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium.
51.) The liner of Claim 47 where the metal is copper. 52.) A munition comprising a body, an explosive and an elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low-velocity slug, the jet having a high-velocity tip segment and a medium- velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil.
53. ) A net having a multiplicity of cords which intersect and where at least some of the intersections have munitions, and at least one or more munitions comprises a body, an explosive and an elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low-velocity slug, the jet having a high-velocity tip segment and a medium- velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil.
54.) A method of destroying a buried mine, the method comprises exploding a munition to penetrate and explode the mine, where the munition comprises a body, an explosive and an elongated, generally conical metal liner that can be formed by deep-drawing and that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low-velocity slug, the jet having a high-velocity tip segment and a medium-velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil. 55.) A method of manufacturing consisting essentially of deep- drawing, annealing and coining a metal form into an elongated, generally conical metal liner that on detonation of a shaped charge produces a metallic jet together with a large, trailing, low-velocity slug, the jet having a high-velocity tip segment and a medium-velocity middle segment, the liner having a substantially uniform wall thickness and an apex, a central region and a base, the central region containing an outwardly extending wall section that is adapted to flow metal into the jet to provide the middle segment with at least sufficient energy to penetrate and explode munitions while the tip has at least sufficient energy to penetrate soil .
56.) The method of Claim 55 where the coining comprises two or more steps including a final step to form the outwardly extending segment in the liner.
57.) The method of Claim 55 where the coining includes intermittent steps of annealing.
58.) The method of Claim 55 where the liner has a full calibre fit to the body.
59.) The method of Claim 55 where the apex has a large radius and the liner has a full calibre fit to the body.
60.) The method of Claim 55 where the liner metal is selected from the group consisting of copper, aluminum, iron, molybdenum, tantalum and zirconium. 61.) The method of Claim 55 where the liner metal is copper.
PCT/US1998/010586 1997-12-01 1998-05-20 Shaped charge liner and method for its production WO1999001713A2 (en)

Priority Applications (2)

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AU10599/99A AU1059999A (en) 1998-05-20 1998-05-20 Shaped charge liners, methods of making the same, and the related munitions nd minefield clearing
PCT/US1998/010586 WO1999001713A2 (en) 1997-12-01 1998-05-20 Shaped charge liner and method for its production

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USNOTFURNISHED 1993-11-12
PCT/US1998/010586 WO1999001713A2 (en) 1997-12-01 1998-05-20 Shaped charge liner and method for its production

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US6317421B1 (en) 1999-12-16 2001-11-13 Telefonaktiebolaget Lm Ericsson (Publ) Method in a communication network
US6840178B2 (en) * 2003-02-21 2005-01-11 Titan Specialties, Ltd. Shaped charge liner
US6898425B1 (en) 1999-12-16 2005-05-24 Telefonaktiebolaget Lm Ericsson (Publ) Method in a communication network
RU2549505C1 (en) * 2014-05-30 2015-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технический университет имени Н.Э. Баумана" (МГТУ им. Н.Э. Баумана) Combined shaped lining for high-speed compact element formation
RU179027U1 (en) * 2018-02-12 2018-04-25 Амир Рахимович Арисметов COMPOSITE POWDER FACING OF COMPLEX FORM FOR CUMULATIVE CHARGES
WO2023203440A1 (en) * 2022-04-21 2023-10-26 Veniamin ZONENKO Warhead

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US5675104A (en) * 1994-10-24 1997-10-07 Tracor Aerospace, Inc. Aerial deployment of an explosive array

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6317421B1 (en) 1999-12-16 2001-11-13 Telefonaktiebolaget Lm Ericsson (Publ) Method in a communication network
US6898425B1 (en) 1999-12-16 2005-05-24 Telefonaktiebolaget Lm Ericsson (Publ) Method in a communication network
US6840178B2 (en) * 2003-02-21 2005-01-11 Titan Specialties, Ltd. Shaped charge liner
RU2549505C1 (en) * 2014-05-30 2015-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технический университет имени Н.Э. Баумана" (МГТУ им. Н.Э. Баумана) Combined shaped lining for high-speed compact element formation
RU179027U1 (en) * 2018-02-12 2018-04-25 Амир Рахимович Арисметов COMPOSITE POWDER FACING OF COMPLEX FORM FOR CUMULATIVE CHARGES
WO2023203440A1 (en) * 2022-04-21 2023-10-26 Veniamin ZONENKO Warhead

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AU1059999A (en) 1999-01-25

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