Projectile with sabot

• US 4,142,467 A
• Filed: 07/07/1977
• Issued: 03/06/1979
• Est. Priority Date: 07/09/1976
• Status: Expired due to Term

• Current Assignee: Dynamit Nobel AG
• Original Assignee: Dynamit Nobel AG
• Inventors: Brede, Uwe, Stahlmann, Rudolf, Homburg, Axel
• Primary Examiner(s): Jordan, Charles T.
• Application Number:
  US05/813,432
• Time in Patent Office: 607 Days
• Field of Search: 102/93, 102/92.7, 102/92.6, 102/92.4, 102/92.1
• US Class Current: 102/523
• CPC Class Codes: F42B 14/064 Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base
• CPC Class Codes: F42B 14/08 Sabots filled with propulsive charges; Removing sabots by combustion of pyrotechnic elements or by propulsive-gas pressure arrangements on barrels for removing sabots from projectiles F41A21/46

Abstract

A sabot projectile including a sabot, a subcaliber projectile and a hood arranged in front of the sabot and surrounding at least a part of the projectile. The hood is coupled to the sabot and/or the projectile and is separable therefrom. The sabot is provided with at least one bore extending in the longitudinal direction and arranged for exposure to propellant gases upon firing of the sabot projectile from the barrel of a weapon and for directing the propellant gases onto the hood for accelerating the hood relative to the projectile while the sabot projectile is within the barrel of the weapon.

Claims

1. A sabot projectile comprising a subcaliber projectile, a sabot having at least one longitudinally extending bore means arranged for exposure to propellant gases upon firing of the sabot projectile from a barrel of a weapon, and a hood means arranged in front of the sabot and surrounding at least a portion of the subcaliber projectile, the hood means being coupled at least to one of the sabot and the subcaliber projectile and being separable therefrom, the bore means being arranged for directing the propellant gases onto the hood means for accelerating the hood means relative to at least one of the sabot and subcaliber projectile while the sabot projectile is within the barrel of the weapon. sabot

2. A sabot projectile according to claim 1, wherein the hood means surrounds the subcaliber projectile along at least a portion of the length thereof and the acceleration of the hood means relative to at least one of the sabot and subcaliber projectile within the barrel of the weapon enables the decoupling of the hood means from the at least one of the sebot and subcaliber projectile.

3. A sabot projectile according to claim 1, wherein the hood means includes at least one gas pressure chamber means for receiving propellant gases flowing through the longitudinal bore means upon firing of the sabot projectile.

4. A sabot projectile according to claim 3, wherein the hood means contacts the subcaliber projectile along at least a portion of the length thereof and includes guiding means in the region of contact with the subcaliber projectile, the gas pressure chamber means being delimited by an annular space emanating from the rear end of the hood means and surrounding at least a portion of the length of the subcaliber projectile, the guiding means being arranged subsequent to the annular space in the forward direction.

5. A sabot projectile according to claim 4, wherein the hood means includes a plurality of internal longitudinally extending recess means uniformly distributed over the cross section thereof and extending in the forward direction from the annular space into at least the guiding means of the hood means.

6. A sabot projectile according to claim 5, wherein the hood means includes a hollow space at the front portion thereof, the longitudinally extending recess means terminating at the hollow space which forms a common hollow space for the terminating forward ends of the recess means.

7. A sabot projectile according to claim 6, wherein the hollow space of the hood means is arranged in front of the subcaliber projectile.

8. A sabot projectile according to claim 1, wherein the longitudinal bore means of the sabot includes at least two eccentrically arranged gas ducts uniformly distributed over the cross section of the sabot.

9. A sabot projectile according to claim 8, wherein the longitudinal bore means further includes an axial recess in the sabot emanating from the rear end thereof, the at least two gas ducts extending from the recess.

10. A sabot projectile according to claim 1, wherein the longitudinal extending bore means includes a central gas duct arranged with respect to the rear of the subcaliber projectile such that the propellant gases exiting from the central gas duct flow laterally around the rear of the subcaliber projectile before becoming effective on the hood means.

11. A sabot projectile according to claim 10, wherein the longitudinal bore means of the sabot includes an axial recess emanating from the rear of the sabot, the central gas duct extending from the recess.

12. A sabot projectile according to claim 1, wherein the hood means includes coupling means for coupling the hood means with the subcaliber projectile for enabling the spin motion of the hood means to be transmitted to the subcaliber projectile.

13. A sabot projectile according to claim 12, wherein the subcaliber projectile is provided along a portion of its length with a non-circular cross section, the coupling means of the hood means contacting the subcaliber projectile at least in the region of the non-circular cross section of the subcaliber projectile.

14. A sabot projectile according to claim 1, wherein the subcaliber projectile is provided in the rear zone thereof with wing members uniformly distributed over the circumference thereof.

15. A sabot projectile according to claim 14, wherein the hood means includes an annular space at the rear portion thereof, the wing members of the subcaliber projectile being inclined in the flight direction and extending into the annular space.

16. A sabot projectile according to claim 15, wherein the sabot includes recesses into which the wings of the subcaliber projectile extend.

17. A sabot projectile according to claim 1, wherein the hood means includes an outer nonrotationally symmetric cross-sectional configuration.

18. A sabot projectile according to claim 1, wherein the subcaliber projectile is a training projectile having a shortened range.

19. A sabot projectile according to claim 16, wherein the subcaliber projectile is provided with a flattened forward portion for providing increased drag resistance during flight and a shortened range of the subcaliber projectile.

20. A sabot projectile according to claim 7, wherein the hood means surrounds the subcaliber projectile along at least a portion of the length thereof and the acceleration of the hood means relative to at least one of the sabot and subcaliber projectile within the barrel of the weapon enables the decoupling of the hood means from the at least one of the sabot and subcaliber projectile.

21. A sabot projectile according to claim 20, wherein the hood means includes an outer nonrotationally symmetric cross-sectional configuration.

22. A sabot projectile according to claim 20, wherein the longitudinal bore means of the sabot includes at least two eccentrically arranged gas ducts uniformly distributed over the cross section of the sabot.

23. A sabot projectile according to claim 22, wherein the longitudinal bore means further includes an axial recess in the sabot emanating from the rear end thereof, the at least two gas ducts extending from the recess.

24. A sabot projectile according to claim 23, wherein the subcaliber projectile is provided in the rear zone thereof with wing members uniformally distributed over the circumference thereof

25. A sabot projectile according to claim 24, wherein the hood means includes coupling means for coupling the hood means with the subcaliber projectile for enabling the spin motion of the hood means to be transmitted to the subcaliber projectile.

26. A sabot projectile according to claim 25, wherein the subcaliber projectile is provided along a portion of its length with a non-circular cross section, the coupling means of the hood means contacting the subcaliber projectile at least in the region of the non-circular cross section of the subcaliber projectile.

27. A sabot projectile according to claim 24, wherein the hood means includes an outer nonrotationally symmetric cross-sectional configuration.

28. A sabot projectile according to claim 27, wherein the subcaliber projectile is a training projectile having a shortened range.

29. A sabot projectile according to claim 20, wherein the longitudinal extending bore means includes a central gas duct arranged with respect to the rear of the subcaliber projectile such that the propellant gases exiting from the central gas duct flow laterally around the rear of the subcaliber projectile before becoming effective on the hood means.

30. A sabot projectile according to claim 29, wherein the longitudinal bore means of the sabot includes an axial recess emanating from the rear of the sabot, the central gas duct extending from the recess.

31. A sabot projectile according to claim 30, wherein the subcaliber projectile is provided in the rear zone thereof with wing members uniformly distributed over the circumference thereof.

32. A sabot projectile according to claim 31, wherein the hood means includes coupling means for coupling the hood means with the subcaliber projectile for enabling the spin motion of the hood means to be transmitted to the subcaliber projectile.

33. A sabot provided according to claim 32, wherein the subcaliber projectile is provded along a portion of its length with a non-circular cross section, the coupling means of the hood means contacting the subcaliber projectile at least in the region of the non-circular cross section of the subcaliber projectile.

34. A sabot projectile according to claim 31, wherein the hood means includes an outer nonrotationally symmetric cross-sectional configuration.

35. A sabot projectile according to claim 34, wherein the subcaliber projectile is a training projectile having a shortened range.