Device for venting an explosive charge and munition equipped with such a device

Patent metadata

Field	Value
Publication number	US-11054229-B2
Application number	US-201916703787-A
Country	US
Kind code	B2
Filing date	Dec 4, 2019
Priority date	Dec 13, 2018
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

A venting device for a projectile includes a first part comprising a body containing an explosive charge and a second part comprising an actuating element for triggering the explosive charge, the first and second parts forming an assembly able to confine the explosive charge when they are connected, the venting device comprising: a sealing means configured to render the projectile gastight and fluidtight when the first and second parts are connected; an opening means able to allow the projectile to open, the opening means being able to be triggered when the internal pressure in the projectile is higher than or equal to a given pressure threshold; a pushing means able to enlarge the opening of the projectile once the opening means has been triggered.

First claim

The invention claimed is:

1. A venting device for venting an explosive charge for a projectile comprising a first part comprising a body containing an explosive charge and a second part comprising an actuating element for triggering said explosive charge, the first and second parts of said projectile forming an assembly able to confine the explosive charge when said first and second parts of said projectile are connected, said venting device comprising:
a sealing means configured to render the projectile gastight and fluidtight when the first and second parts of the projectile are connected;
an opening means able to allow the projectile to open in order to create an opening in the projectile, said opening means being able to be triggered when an internal pressure of the projectile is higher than or equal to a given pressure threshold;
a pushing means able to enlarge the opening of the projectile once the opening means has been triggered.

2. The venting device according to claim 1 , configured in such a way as to allow an opening between the first part and the second part of the projectile.

3. The venting device according to claim 2 , the opening means being located between the first part and the second part of the projectile.

4. The venting device according to claim 1 , the body comprising a first part and a second part, and the venting device being configured in such a way as to allow the opening to form in the body between said first part of the body and said second part of the body.

5. The venting device according to claim 4 , the opening means being located between the first part of the body and the second part of the body.

6. The venting device according to claim 1 , the opening means comprising a mechanical component able to break when an internal pressure is higher than or equal to the given pressure threshold.

7. The venting device according to claim 6 , wherein the opening means comprises a threaded component having a screw thread able to strip when the internal pressure of the projectile is higher than or equal to the given pressure threshold.

8. The venting device according to claim 1 , the pushing means comprising a compressed spring able to relax once the opening means has been triggered.

9. The venting device according to claim 1 , the sealing means comprising at least one seal.

10. The venting device according to claim 1 , further comprising a first component connected to the first part of the projectile and located between said first part of the projectile and the second part of the projectile, the sealing means and the pushing means being located between said first component and said second part of the projectile.

11. The venting device according to claim 10 , the sealing means being located on the first component or on the second component.

12. The venting device according to claim 10 , the pushing means being connected to the first component or to the second component.

13. The venting device according to claim 10 , the opening means being located between the first part of the projectile and the second part of the projectile, and the opening means being connected to the first component or to the second component.

14. The venting device according to claim 1 , further comprising a second component, connected to the second part of the projectile and located between the first part of the projectile and said second part of the projectile, the sealing means and the pushing means being located between said second component and said first part of the projectile, or between said second component and said first component.

15. A munition comprising a projectile equipped with a venting device according to claim 1 .

Assignees

• Thales Sa

Inventors

• Benade Eroan
• Schwartz Jean-Sébastien
• Baillargeat Romain

Classifications

• F42B12/207 Primary

  characterised by the explosive material or the construction of the high explosive warhead, e.g. insensitive ammunition · CPC title

• F42B39/20 Primary

  Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable {; Blow-out panels; Venting arrangements (ventilating arrangements on packages formed from foldable or erectable blanks B65D5/4295; packages with pressure-relief valves incorporated in a container wall B65D77/225)} · CPC title