BRAKE PANEL FOR A DETONATOR OR A PROJECTILE

• US 20150001335A1
• Filed: 01/28/2013
• Published: 01/01/2015
• Est. Priority Date: 02/06/2012
• Status: Active Grant

• Current Assignee: BAE Systems AB (BAE Systems Plc), BAE Systems Hã¤Gglunds AB (BAE Systems Plc)
• Original Assignee: BAE Systems Hã¤Gglunds AB (BAE Systems Plc)
• Inventors: Pettersson, Thomas
• Granted Patent: US 9,702,675 B2
• Time in Patent Office: Days
• US Class Current: 244/3.1
• CPC Class Codes: F42B 10/50 Brake flaps , e.g. inflatable
• CPC Class Codes: F42C 19/02 Fuze bodies; Fuze housings

Abstract

The invention relates to a brake panel (3, 3′) for a projectile (1), in which those surfaces (A) of the brake panel (3, 3′) which are facing in the direction of travel of the projectile are wholly or partially angled in such a way that the normal from the said surfaces (A) is not parallel with the centre line (C) of the projectile (1) in order to reduce or counteract the Magnus torque generated during and after the extension of the brake panel (3, 3′). The invention further relates to a detonator (2) for a projectile (1) and a projectile (1) comprising such a brake panel.

Claims

1. Brake panel for a projectile, which projectile is designed for firing from a launcher, wherein those surfaces of the brake panel which are facing in the direction of travel of the projectile are wholly or partially angled in such a way that the normal from the said surfaces is not parallel with the centre line of the projectile in order to reduce or counteract the Magnus torque generated during the extension of the brake panel and after the extension of the brake panel.

2. Brake panel according to claim 1, wherein the rear side of the brake panel, situated opposite to the direction of travel of the projectile, is flatly configured with a normal from the surface having the same angulation as the centre line of the projectile.

3. Brake panel according to claim 1, wherein the brake panel is obliquely arranged in the projectile, and in that the rear side of the said brake panel, which is situated opposite to the direction of travel of the projectile, is angled like the front side of the said brake panel facing in the direction of travel of the projectile.

4. Brake panel according to claim 1, wherein the angulation of the normal from that surface A of the brake panel which is facing in the direction of travel is in the order of magnitude of 1 degree relative to the centre line of the projectile.

5. Brake panel according to claim 1, wherein the angulation of those surfaces (A) of the brake panel which are facing in the direction of travel of the projectile is variably adjustable relative to the centre line of the projectile in order to reduce or counteract the Magnus torque generated upon the extension of the brake panel.

6. Detonator for a projectile comprising one or more extensible brake panels according to claim 1.

11. Brake panel according to claim 2, wherein the angulation of the normal from that surface (A) of the brake panel which is facing in the direction of travel is in the order of magnitude of 1 degree relative to the centre line of the projectile.

12. Brake panel according to claim 3, wherein the angulation of the normal from that surface (A) of the brake panel which is facing in the direction of travel is in the order of magnitude of 1 degree relative to the centre line of the projectile.

13. Brake panel according to claim 2, wherein the angulation of those surfaces (A) of the brake panel which are facing in the direction of travel of the projectile is variably adjustable relative to the centre line (C) of the projectile in order to reduce or counteract the Magnus torque generated upon the extension of the brake panel.

14. Brake panel according to claim 3, wherein the angulation of those surfaces (A) of the brake panel which are facing in the direction of travel of the projectile is variably adjustable relative to the centre line (C) of the projectile in order to reduce or counteract the Magnus torque generated upon the extension of the brake panel.

15. Brake panel according to claim 4, wherein the angulation of those surfaces (A) of the brake panel which are facing in the direction of travel of the projectile is variably adjustable relative to the centre line (C) of the projectile in order to reduce or counteract the Magnus torque generated upon the extension of the brake panel.

16. Detonator for a projectile comprising one or more extensible brake panels according to claim 2.

17. Detonator for a projectile comprising one or more extensible brake panels according to claim 3.

18. Detonator for a projectile comprising one or more extensible brake panels according to claim 4.

19. Detonator for a projectile comprising one or more extensible brake panels according to claim 5.

7. Projectile designed for firing from a launcher, which projectile comprises one or more extensible brake panels those surfaces (A) of the brake panels which are facing in the direction of travel of the projectile are wholly or partially angled in such a way that the normal from the said surfaces (A) differs from the centre line (C) of the projectile in order to reduce or counteract the Magnus torque generated during the extension of the brake panels and after the extension of the brake panels.

8. Projectile according to claim 7, the number of brake panels is two or four or six or eight.

9. Projectile according to claim 7, the number of brake panels is one or three or five or seven.

10. Projectile according to claim 9, wherein the brake panel is variably adjustable between the fully extended state and the wholly refracted state.

20. Projectile according to claim 8, wherein the brake panel is variably adjustable between the fully extended state and the wholly retracted state.