Detonation-wave-shaping fuze booster

Patent metadata

Field	Value
Publication number	US-10690459-B1
Application number	US-201815932603-A
Country	US
Kind code	B1
Filing date	Mar 23, 2018
Priority date	Mar 23, 2018
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A fuze booster includes a first explosive charge having a cavity with an annular portion of the first explosive charge encircling a first axial portion of the cavity and a semi-annular portion partially encircling a second axial portion of the cavity. The annular portion abuts the semi-annular portion. An explosively-inert material abuts the semi-annular portion, abuts the annular portion, and partially encircles the second axial portion of the cavity. A second explosive charge abuts the explosively-inert material, abuts the semi-annular portion, and partially encircles the second axial portion of the cavity. The second axial portion of the cavity is thus completely encircled by a combination of the semi-annular portion, the explosively-inert material, and the second explosive charge.

First claim

What is claimed as new and desired to be secured by Letters Patent of the United States is:

1. A fuze booster, comprising:
a first explosive charge having a cavity extending there through, said first explosive charge includes an annular portion encircling a first axial portion of said cavity and a semi-annular portion partially encircling a second axial portion of said cavity, wherein said annular portion abuts said semi-annular portion;
an explosively-inert material abutting said semi-annular portion, abutting said annular portion, and partially encircling said second axial portion of said cavity; and
a second explosive charge abutting said explosively-inert material, abutting said semi-annular portion, and partially encircling said second axial portion of said cavity, wherein said second axial portion of said cavity is completely encircled by a combination of said semi-annular portion, said explosively-inert material, and said second explosive charge.

2. The fuze booster as in claim 1 , wherein said annular portion and said semi-annular portion are integrated with one another.

3. The fuze booster as in claim 1 , wherein said cavity is centrally positioned in said first explosive charge.

4. The fuze booster as in claim 1 , wherein said explosively-inert material is selected from the group consisting of plastics, foam, felt, rubber and wood.

5. The fuze booster as in claim 1 , wherein said explosively-inert material is selected from the group consisting of solid materials, hollow materials, and foam materials.

6. The fuze booster as in claim 1 , wherein said explosively-inert material is indexed into said annular portion.

7. The fuze booster as in claim 1 , wherein said second explosive charge is nested in said explosively-inert material.

8. The fuze booster as in claim 7 , wherein said second explosive charge is wedge-shaped.

9. A fuze booster, comprising:
a first explosive charge including a cavity centrally-positioned therein and extending there through, said first explosive charge includes an annular portion integrated with a semi-annular portion, said annular portion encircles a first axial portion of said cavity and said semi-annular portion partially encircles a second axial portion of said cavity;
an explosively-inert material abutting said semi-annular portion, abutting said annular portion, and partially encircling said second axial portion of said cavity; and
a second explosive charge abutting said explosively-inert material, abutting said semi-annular portion, and partially encircling said second axial portion of said cavity, wherein said second axial portion of said cavity is completely encircled by a combination of said semi-annular portion, said explosively-inert material, and said second explosive charge.

10. The fuze booster as in claim 9 , wherein said explosively-inert material is selected from the group consisting of plastics, foam, felt, rubber and wood.

11. The fuze booster as in claim 9 , wherein said explosively-inert material is selected from the group consisting of solid materials, hollow materials, and foam materials.

12. The fuze booster as in claim 9 , wherein said explosively-inert material is indexed into said annular portion.

13. The fuze booster as in claim 9 , wherein said second explosive charge is nested in said explosively-inert material.

14. The fuze booster as in claim 13 , wherein said second explosive charge is wedge-shaped.

15. A fuze booster, comprising:
a first explosive charge including a cavity extending there through, said first explosive charge includes an annular portion encircling a first axial portion of said cavity and a semi-annular portion partially encircles a second axial portion of said cavity, wherein said annular portion abuts said semi-annular portion;
a hollow detonation-wave-shaping element made from an explosively-inert material, said detonation-wave-shaping element abuts said semi-annular portion, abuts and indexed to said annular portion, and partially encircles said second axial portion of said cavity; and
a second explosive charge abutting said detonation-wave-shaping element, abutting said semi-annular portion, and partially encircling said second axial portion of said cavity, wherein said second axial portion of said cavity is completely encircled by a combination of said semi-annular portion, said detonation-wave-shaping element, and said second explosive charge.

16. The fuze booster as in claim 15 , wherein said annular portion and said semi-annular portion are integrated with one another.

17. The fuze booster as in claim 15 , wherein said cavity is centrally positioned in said first explosive charge.

18. The fuze booster as in claim 15 , wherein said detonation-wave-shaping element comprises a plastic material.

19. The fuze booster as in claim 15 , wherein said second explosive charge is nested in said detonation-wave-shaping element.

20. The fuze booster as in claim 19 , wherein said second explosive charge is wedge-shaped.

Assignees

• Us Navy

Inventors

• Sherlock Mary H
• Cole Brian A
• Beckett Kyle M
• Felts Joshua E
• Svingala Forrest R
• Mckeown Reid M
• Sandusky Harold W

Classifications

• F42C19/0838 Primary

  Primers or igniters for the initiation or the explosive charge in a warhead (F42C19/095 takes precedence) · CPC title

• F42C19/0807

  characterised by the particular configuration of the transmission channels from the priming energy source to the charge to be ignited, e.g. multiple channels, nozzles, diaphragms or filters · CPC title

• F42B1/024

  provided with embedded bodies of inert material · CPC title

• F42C19/0823

  Primers or igniters for the initiation or the propellant charge in a cartridged ammunition (primers for caseless ammunition F42C19/085) · CPC title

• F42C19/09

  Primers or detonators containing a hollow charge · CPC title