Fragmentation bodies, warheads including fragmentation bodies, and related ordnance
View Patent ↗A fragmentation body comprising a substantially monolithic structure comprising a metal material and comprising a major surface having an indentation pattern therein, and an opposing major surface having an opposing indentation pattern therein, the opposing indentation pattern being substantially aligned with the indentation pattern. A warhead and an article of ordnance are also described.
1. A fragmentation body, comprising:
a substantially monolithic structure comprising a metal material comprising at least one high-density metal and at least one metal having a lower melting point than the at least one high-density metal, the substantially monolithic structure exhibiting:
a major surface having an indentation pattern therein; and
an opposing major surface having an opposing indentation pattern therein, the opposing indentation pattern substantially aligned with the indentation pattern.
2. The fragmentation body of claim 1 , wherein the at least one high-density metal comprises tungsten.
3. The fragmentation body of claim 1 , wherein the metal material is substantially inert.
4. The fragmentation body of claim 1 , wherein the metal material is substantially reactive.
5. The fragmentation body of claim 1 , wherein a ratio between a distance between each adjacent parallel indentation of the indentation pattern and a height of the substantially monolithic structure is within a range of from about 1.5:1 to about 2.5:1.
6. The fragmentation body of claim 1 , wherein at least one indentation of the indentation pattern has a substantially different shape than at least one substantially aligned indentation of the opposing indentation pattern.
7. The fragmentation body of claim 1 , wherein the indentation pattern comprises:
a first array of indentations extending across at least a portion of the major surface in a first direction; and
a second array of indentations extending across the at least a portion of the major surface in a second direction such that the first array of indentations and the second array of indentations at least partially intersect.
8. The fragmentation body of claim 7 , wherein each indentation of at least one of the first array of indentations and the second array of indentations is substantially uniformly spaced.
9. The fragmentation body of claim 7 , wherein the opposing indentation pattern comprises:
a first opposing array of indentations substantially aligned with the first array of indentations and extending across at least a portion of the opposing major surface in the first direction; and
a second opposing array of indentations substantially aligned with the second array of indentations and extending across the at least a portion of the opposing major surface in the second direction such that the first opposing array of indentations and the second opposing array of indentations at least partially intersect.
10. The fragmentation body of claim 9 , wherein the indentation pattern further comprises at least one additional indentation, and wherein the opposing indentation pattern further comprises at least one additional opposing indentation substantially aligned with the at least one additional indentation.
11. The fragmentation body of claim 9 , wherein at least one of the major surface and the opposing major surface has at least one elevated portion.
12. The fragmentation body of claim 11 , wherein each of a third array of indentations and a fourth array of indentations extends across the elevated portion of the at least one of the major surface and the opposing major surface, and wherein each of the first array of indentations and the second array of indentations extends across a remaining portion of the at least one of the major surface and the opposing major surface.
13. The fragmentation body of claim 12 , wherein parallel indentations extending across the elevated portion are set apart by a substantially uniform distance, and wherein other parallel indentations extending across the remaining portion are set apart by a different substantially uniform distance.
14. The fragmentation body of claim 1 , wherein the indentation pattern and the opposing indentation pattern at least partially define interconnected fragments, each of the interconnected fragments comprising:
a first region at least partially defined by the indentation pattern;
a second region at least partially defined by the opposing indentation pattern; and
an intermediary region between the first region and the second region, the intermediary region extending across the substantially monolithic structure between each of the interconnected fragments.
15. The fragmentation body of claim 14 , wherein at least one of the interconnected fragments has a substantially different size than at least one other of the interconnected fragments.
16. The fragmentation body of claim 14 , wherein each of the interconnected fragments has a mass within a range of from about 1 grain to about 30 grains.
17. The fragmentation body of claim 1 , wherein at least a portion of the substantially monolithic structure is substantially planar.
18. The fragmentation body of claim 1 , wherein at least a portion of the substantially monolithic structure is substantially curved.
19. A warhead, comprising:
an explosive charge; and
at least one fragmentation body adjacent the explosive charge and comprising:
a substantially monolithic structure comprising a metal material comprising at least one high-density metal and at least one metal having a lower melting point than the at least one high-density metal, the substantially monolithic structure exhibiting:
a major surface having an indentation pattern formed therein; and
an opposing major surface having an opposing indentation pattern formed therein, the opposing indentation pattern substantially aligned with the indentation pattern.
20. The warhead of claim 19 , wherein the at least one fragmentation body is configured to break up along the substantially aligned indentation pattern and the substantially aligned opposing indentation pattern into a plurality of discrete fragments of a substantially controlled shape and of a substantially controlled size upon detonation of the explosive charge.
21. The warhead of claim 19 , further comprising a barrier material between the explosive charge and the at least one fragmentation body.
22. The warhead of claim 19 , wherein the at least one fragmentation body comprises:
a first fragmentation body adjacent the explosive charge; and
a second fragmentation body on the first fragmentation body.
23. The warhead of claim 22 , wherein the first fragmentation body has a different geometric configuration than the second fragmentation body.
24. The warhead of claim 22 , wherein the first fragmentation body and the second fragmentation body each comprise a substantially similar metal material.
25. The warhead of claim 22 , wherein the first fragmentation body comprises a different metal material than the second fragmentation body.
26. An article of ordnance, comprising:
a rocket motor; and
a warhead comprising:
an explosive charge;
at least one fragmentation body adjacent the explosive charge and comprising:
at least one fragmentation body comprising:
a substantially monolithic structure comprising a metal material comprising at least one high-density metal and at least one metal having a lower melting point than the at least one high-density metal, the substantially monolithic structure exhibiting:
a major surface having an indentation pattern formed therein; and
an opposing major surface having an opposing indentation pattern formed therein, the opposing indentation pattern substantially aligned with the indentation pattern.
27. A fragmentation body, comprising:
a substantially monolithic structure comprising a metal material, and comprising:
a major surface having an indentation pattern therein; and
an opposing major surface having an opposing indentation pattern therein, the opposing indentation pattern substantially aligned with the indentation pattern, at least one indentation of the indentation pattern having a substantially different shape than at least one substantially aligned indentation of the opposing indentation pattern.
28. The fragmentation body of claim 27 , wherein the at least one indentation of the indentation pattern exhibits a substantially rectangular shape, and the at least one substantially aligned indentation of the opposing indentation pattern exhibits a substantially triangular shape.
29. A fragmentation body, comprising:
a substantially monolithic structure comprising a metal material, and comprising:
a major surface having an indentation pattern therein, the indentation pattern comprising:
a first array of indentations extending across at least a portion of the major surface in a first direction; and
a second array of indentations extending across the at least a portion of the major surface in a second direction such that the first array of indentations and the second array of indentations at least partially intersect; and
an opposing major surface having an opposing indentation pattern therein, the opposing indentation pattern substantially aligned with the indentation pattern and comprising:
a first opposing array of indentations substantially aligned with the first array of indentations and extending across at least a portion of the opposing major surface in the first direction; and
a second opposing array of indentations substantially aligned with the second array of indentations and extending across the at least a portion of the opposing major surface in the second direction such that the first opposing array of indentations and the second opposing array of indentations at least partially intersect,
at least one of the major surface and the opposing major surface having at least one elevated portion.
30. A warhead, comprising:
an explosive charge; and
at least one fragmentation body adjacent the explosive charge and comprising:
a substantially monolithic structure comprising a metal material, and comprising:
a major surface having an indentation pattern therein; and
an opposing major surface having an opposing indentation pattern therein, the opposing indentation pattern substantially aligned with the indentation pattern, at least one indentation of the indentation pattern having a substantially different shape than at least one substantially aligned indentation of the opposing indentation pattern.