Sabot

Patent metadata

Field	Value
Publication number	US-11371818-B2
Application number	US-201917289424-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Oct 30, 2018
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

The present invention provides a sabot (8) comprising a first material structure (12, 14) and a second material structure, wherein the first material structure is a lattice and wherein the second material structure is a solid. A munition (100) and a method of manufacturing a sabot are also provided.

First claim

The invention claimed is:

1. A sabot comprising:
a main body;
an obturator at a rear end of the main body; and
a front scoop at a front end of the main body, the front scoop comprising at least two forward-facing concave petals radially bound together around the main body and arranged parallel to each other along a longitudinal axis of the main body, the front scoop comprising a region having a first material structure, a rib extending from the main body and circumferentially around an inside of the at least two petals and the rib comprising a second material structure, the at least two petals configured to be separated from the main body and from each other in response to air resistance upon the front scoop, wherein the first material structure of the region is a lattice and the second material structure of the rib is a solid.

2. The sabot according to claim 1 , wherein the main body and/or the obturator comprise at least the first material structure.

3. The sabot according to claim 1 , wherein the obturator comprises at least the first material structure.

4. The sabot according to claim 1 , wherein the front scoop comprises the first material structure and a third material structure, wherein the third material structure is a lattice.

5. The sabot according to claim 4 , wherein the lattice of the third material structure has a different density to that of the first material structure.

6. The sabot according to claim 5 , wherein the first material structure is disposed in a first region of the front scoop and the third material structure is disposed in a second region of the front scoop, wherein the first and second regions are disposed adjacent to one another and each extend from an inner rim of the front scoop to an outer rim of the front scoop.

7. The sabot according to claim 4 , comprising a sintered powdered metal, wherein the first, second and third material structures are formed from the same sintered powdered metal.

8. The sabot according to claim 6 , wherein the rib is arranged to separate the first region and the second region.

9. The sabot according to claim 1 , wherein the lattice of the first material structure is greater than 15% volume fraction and less than 80% volume fraction.

10. The sabot according to claim 1 , comprising a sintered powdered metal, wherein the first and second material structures are formed from the same sintered powdered metal.

11. A munition comprising the sabot according to claim 1 .

12. A munition comprising the sabot according to claim 5 .

13. A method of manufacturing a sabot, the method comprising:
forming a main body including a rib, an obturator at a rear end of the main body, and a front scoop at a front end of the main body, the front scoop comprising at least two forward-facing concave petals radially bound together around the main body and arranged parallel to each other along a longitudinal axis of the main body,
wherein forming the front scoop comprises forming a region having a first material structure, the rib extending from the main body and circumferentially around an inside of the at least two petals and comprising a second material structure, the at least two petals configured to be separated from the main body and from each other in response to air resistance upon the front scoop, wherein the first material structure of the region is a lattice and the second material structure of the rib is a solid.

14. The method according to claim 13 , wherein forming the main body, obturator, and front scoop comprises using additive layer manufacturing.

15. The method according to claim 13 , wherein forming the main body and/or the obturator comprises forming the main body and/or the obturator at least of the first material structure.

16. The method according to claim 13 , wherein forming the obturator comprises forming the obturator of at least the first material structure.

17. The method according to claim 14 , comprising forming the front scoop of at least the first material structure and a third material structure.

18. The method according to claim 17 , wherein the first and third material structures are lattices of different densities to each other.

19. The method according to claim 17 , comprising forming the rib such that it separates the first and third material structures.

20. The method according to claim 13 , comprising forming the front scoop of at least the first material structure and a third material structure.

Assignees

• Bae Systems Plc

Inventors

• Paterson John Andrew
• Davies Benjamin Mark
• Wong King Kwok
• Wainwright John

Classifications

• F42B14/061 Primary

  Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile · CPC title

• F42B14/068 Primary

  Sabots characterised by the material (F42B14/067 takes precedence) · CPC title