US 10,119,797 B2 · Cap-based heat-mitigating nose insert for a projectile and a projectile containing the same

Abstract

Techniques and architecture are disclosed for a nose insert for use in a projectile. The nose insert includes a polymer nose element and a metal cap. The polymer nose element includes a rear shank portion and a tapered head portion. Disposed onto the tapered head portion of the polymer nose is the metal cap. The metal includes an outer curved portion that terminates at a forward end in a meplat. In some embodiments, the metal cap prevents deformation of the polymer nose element caused by high stagnation temperatures experienced by the projectile during flight. In some other embodiments, the metal cap includes a locking ridge. The locking ridge is disposed on an inner surface of the metal cap component and interfaces with an outer surface of the tapered head portion of the polymer nose element.

Claims20

Dependent claims

A nose insert for use in a projectile comprising:

a polymer nose element including a tapered head portion attached to a shank portion, the tapered head portion including a forward tapered portion and a rear tapered portion, the rear tapered portion being between the forward tapered portion and the shank portion, and the shank portion including a diameter smaller than a diameter of the rear tapered portion adjacent to the shank portion;
and
a metal cap disposed on the forward tapered portion of the tapered head portion of the polymer nose element, the metal cap terminates at a forward end in a meplat.

A projectile comprising:

a unitary body, including a forward end opposite a rear end and an intermediate cylindrical portion positioned between the rear end and the forward end, the unitary body further including a cavity within the forward end;
a nose insert disposed in the unitary body, the nose insert comprising
a polymer nose element received within the cavity of the unitary body and including a tapered head portion attached to a shank portion, the tapered head portion including a forward tapered portion and a rear tapered portion, the rear tapered portion being between the forward tapered portion and the shank portion, and the shank portion including a diameter smaller than a diameter of the rear tapered portion adjacent to the shank portion;
and
a metal cap disposed on the forward tapered portion of the tapered head portion of the polymer nose element, the metal cap terminates at a forward end in a meplat.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/906,440Filed 27 Feb 2018 · us provisional application

Priority

27 Feb 2017

Published

US 2018/0245896 A130 Aug 2018

Granted

6 Nov 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

F42B 10/38
Range-reducing or range-increasing arrangements; Fall-retarding means: range-increasing arrangements
F42B 12/34
Characterised by the warhead or the intended effect: expanding before or on impact, i.e. of dumdum or mushroom type
F42B 12/78
Of the casing: of jackets for smallarm bullets ; Jacketed bullets or projectiles
F42B
Explosive charges

Cap-based heat-mitigating nose insert for a projectile and a projectile containing the same

Life of this patent

Cap-based heat-mitigating nose insert for a projectile and a projectile containing the same

Life of this patent

Abstract

Claims20