Armor-piercing fragmentation subcaliber projectile

• US 5,291,833 A
• Filed: 10/30/1992
• Issued: 03/08/1994
• Est. Priority Date: 02/26/1991
• Status: Expired due to Fees

• Current Assignee: GIAT Industries
• Original Assignee: GIAT Industries
• Inventors: Boual, Roland
• Primary Examiner(s): TUDOR, HAROLD JAY
• Application Number:
  US07/940,871
• Time in Patent Office: 494 Days
• Field of Search: 102/506, 102/510, 102/517, 102/518, 102/519
• US Class Current: 102/506
• CPC Class Codes: F42B 12/06 with hard or heavy core; Kinetic energy penetrators F42B12/16, F42B12/74 take precedence
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type
• CPC Class Codes: F42B 12/367 Projectiles fragmenting upon impact without the use of explosives, the fragments creating a wounding or lethal effect practice or training projectiles disintegrating upon impact F42B8/14; projectiles of high-explosive type with fragmentation-hull construction F42B12/22

Abstract

A projectile for an armored target is characterized in that the body consists of a block of dense material with a frustoconical axial bore, its large end opening in the plane of face of the body. The transmission element consists of a rod extending from the rear face of the head and comprises a seating engaged in the bore to leave a clearance between the rear face of the head and the front face, and the body and the nose are locked in a position where the rod is engaged in the bore. Application to armor-piercing fragmentation shells.

Claims

1. A perforating fragmentation non-explosive charge containing subcaliber projectile having a body made of a dense material, a head adjacent a front part of the body, and a transmission element for transmitting axial thrust interposed between the body and the head, wherein

the body comprises a block of dense material and a frustoconical axial bore, an open end of the axial bore being aligned with a front face of the front part of the body, the body having at least one area of less resistance established transversely to the longitudinal axis of the body,

the transmission element comprises a tail extending axially from a rear face of the head into the axial bore and having at least one frustoconical support engaging the axial bore of the body so as to leave a space between the rear face of the head and the front face, said at least one frustoconical support being located substantially in a transverse plane of the at least one area of less resistance, and

the body and the head are immobilized by the at least one frustoconical support of the tail engaging the bore, whereby upon impact, a relative axial displacement of the body due to said space causes said at least one frustoconical support to exert a radial force on the body thereby causing multiple fragmentation of the body.

2. A projectile according to claim 1, wherein the body and the head are immobilized by a nose cone fitted onto the body.

3. A projectile according to claim 1, wherein the tail is integral with the head.

4. A projectile according to claim 1, wherein the tail includes a cylindrical end part slidably engaged in a cylindrical bore provided in the body extending from the frustoconical axial bore and resting against a block of material able to deform radially under axial compression.

5. A projectile according to claim 4, wherein the cylindrical end part being an independent cylinder.

6. A projectile according to claim 4, wherein the block of material is made of rubber.

7. A projectile according to claim 2, wherein the tail has a plurality of frustoconical supports, a corresponding at least one of said frustoconical supports being located substantially in a transverse plane of the at least one area of less resistance.

8. A projectile according to claim 2, wherein the tail is integral with the head.

9. A projectile according to claim 2, wherein the tail includes a cylindrical end part slidably engaged in a cylindrical bore provided in the body extending from the frustoconical axial bore and resting against a block of material able to deform radially under axial compression.

10. A projectile according to claim 3, wherein the tail includes a cylindrical end part slidably engaged in a cylindrical bore provided in the body extending from the frustoconical axial bore and resting against a block of material able to deform radially under axial compression.

11. A perforating fragmentation non-explosive charge containing subcaliber projectile having a body made of a dense material, a head adjacent a front part of the body, and a transmission element for transmitting axial thrust interposed between the body and the head, wherein

the body comprises a block of dense material and a frustoconical axial bore, an open end of the axial bore being aligned with a front face of the front part of the body,

the transmission element comprises a tail extending axially from a rear face of the head into the axial bore and having at least one frustoconical support engaging the axial bore of the body so as to leave a space between the rear face of the head and the front face,

the tail includes a cylindrical end part slidably engaged in a cylindrical bore provided int eh body extending from the frustoconical axial bore and resting against a block of material able to deform radially under axial compression, and

the body and the head are immobilized by the at least one frustoconical support of the tail engaging the bore, whereby upon impact, a relative axial displacement of the body due to said space causes said at least one frustoconical support to exert a radial force on the body thereby causing multiple fragmentation of the body.