High velocity sabot for spin stabilized penetrator

• US 4,881,466 A
• Filed: 12/23/1988
• Issued: 11/21/1989
• Est. Priority Date: 12/23/1988
• Status: Expired due to Fees

• Current Assignee: General Dynamics Armament Systems, Inc. (General Dynamics Corporation)
• Original Assignee: General Electric Company
• Inventors: McGinley, Jeremiah E.
• Primary Examiner(s): Tudor, Harold J.
• Application Number:
  US07/288,939
• Time in Patent Office: 333 Days
• Field of Search: 102/520-523
• US Class Current: 102/522
• 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

Abstract

An assembly of a sabot is provided having a plurality of slots to divide the sabot into a like plurality of petals, each slot terminating in notch, and a base having a like plurality of lugs, each lug adapted to mate with a respective notch. The torque transmitting interface between each mated lug and notch is a flat plane extending longitudinally and chordally.

Claims

1. A sabot assembly, for launching a spin stabilized subcaliber projectile, from the bore of a gun barrel, comprising:

a one-piece-has sabot having

a longitudinal axis;

a center, longitudinally extending bore for receiving the projectile;

a plurality of more than two longitudinally and radially extending slots, for, upon rupture, dividing the sabot into a like plurality of petals, each slot terminating in and centered on a respective notch,

each pair of immediately adjacent notches defining a respective sabot lug;

a base having

a cylindrical body having a rotating band, and

a like plurality of lugs, each lug interfitted within a respective sabot notch;

each pair of immediately adjacent lugs defining a respective notch in said body, which is interfitted with a respective sabot lug;

each interfitted base lug and sabot notch having a sole torque transmitting interface which is a flat plane extending longitudinally and chordally.

2. A sabot assembly according to claim 1, for a projectile having a conical forward end, wherein:

said central bore has a conical forward end, whereby the projectile when disposed in said central bore, is captured longitudinally and radially between said base and said conical forward end of said bore; and

the absence of torque transmitting interfaces other than said flat planes extending longitudinally and chordally, upon the exit of said sabot assembly from said gun barrel bore, allows said sabot to rupture into said petals, with said petals assuming respective trajectories without interference with the projectile.

3. A sabot assembly according to claim 1, wherein said plurality of longitudinal slots, notches and lugs is four in number.

4. A sabor assembly according to claim 1 wherein said plurality of longitudinal slots, notches and lugs is three in number.