Stepped sabots for projectiles

Patent metadata

Field	Value
Publication number	US-9714819-B1
Application number	US-201314061347-A
Country	US
Kind code	B1
Filing date	Oct 23, 2013
Priority date	Jul 15, 2013
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

Stepped sabots for projectiles are provided. One sabot includes a cylindrical tubular body and at least one stepped surface within the cylindrical tubular body. The stepped surface is configured for engaging at least one complementary surface on a projectile and the stepped surface forms a progressively narrower inner diameter of the cylindrical tubular body.

First claim

What is claimed is:

1. A munition comprising:
a projectile; and
a sabot including a single monolithic cylindrical tubular body having a tube forward end and a tube aft end, a first stepped surface within the cylindrical tubular body proximate to the tube forward end, and a second stepped surface within the cylindrical tubular body closer to the tube aft end than the first stepped surface, wherein the first stepped surface has a first cylindrical inner diameter, and wherein the second stepped surface has a second cylindrical inner diameter that is smaller than the first cylindrical inner diameter, the first and second stepped surfaces forming a progressively narrower inner diameter of the cylindrical tubular body, wherein an outer surface of the tube aft end of the cylindrical tubular body comprises an outwardly flared portion, wherein the cylindrical tubular body has a length configured to extend beyond a base of the projectile when the projectile is received within the cylindrical tubular body, wherein the first cylindrical inner diameter and the second cylindrical inner diameter are complementary to respective first and second outer diameters of the projectile, wherein the projectile is configured to outwardly propel from the tube forward end.

2. The sabot of claim 1 , wherein the cylindrical tubular body has a varying thickness to define a varying diameter.

3. The sabot of claim 2 , wherein the thickness varies differently along an inner surface of the cylindrical tubular body and an outer surface of the cylindrical tubular body.

4. The sabot of claim 1 , wherein the cylindrical tubular body comprises a scooped front end.

5. The sabot of claim 1 , wherein the first and second stepped surfaces are positioned along the cylindrical tubular body such that a center of gravity of the projectile is moved forward.

6. The sabot of claim 1 , wherein the cylindrical tubular body comprises a sabot interface proximate the tube forward end of the cylindrical tubular body configured to engage a different and separate sabot.

7. The sabot of claim 1 , wherein the cylindrical tubular body is formed from an anisotropic material.

8. The munition of claim 1 , wherein the first stepped surface is spaced apart from the second stepped surface.

9. The sabot of claim 1 , wherein the outwardly flared portion has a diameter that exceeds a diameter of a remainder of the sabot.

10. A munition comprising:
a projectile; and
a sabot including a single monolithic cylindrical tubular body having a tube forward end and a tube aft end, a first stepped surface within the cylindrical tubular body proximate to the tube forward end, and a second stepped surface within the cylindrical tubular body closer to the tube aft end than the first stepped surface, wherein the first stepped surface has a first cylindrical inner diameter, and wherein the second stepped surface has a second cylindrical inner diameter that is smaller than the first cylindrical inner diameter, wherein the first cylindrical inner diameter and the second cylindrical inner diameter are complementary to respective first and second outer diameters of the projectile, wherein an outer surface of the tube aft end of the cylindrical tubular body comprises an outwardly flared portion, wherein the projectile is configured to outwardly propel from the tube forward end.

11. The munition of claim 10 , wherein the first stepped surface is spaced apart from the second stepped surface.

12. The munition of claim 10 , wherein the outwardly flared portion has a diameter that exceeds a diameter of a remainder of the sabot.

Assignees

• Boeing Co

Inventors

• Demeester Craig R
• Rackers Keith G

Classifications

• F42B14/062

  characterised by contact surfaces between projectile and sabot · CPC title

• F42B14/068

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

• F42B14/067

  Sealing aspects in sabots, e.g. sealing between individual segments of the sabots or sealing between the outer surface of the sabot and the inner surface of the barrel · CPC title

• F42B14/06 Primary

  Sub-calibre projectiles having sabots; Sabots therefor · CPC title

• F42B14/064

  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 title