Consumable weight components for flares and related flares

Patent metadata

Field	Value
Publication number	US-10647620-B2
Application number	US-201816169073-A
Country	US
Kind code	B2
Filing date	Oct 24, 2018
Priority date	Nov 4, 2011
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

Flares with consumable weights connected to a forward end of the grain of the flare are disclosed. Also disclosed are consumable weight components for flares. The consumable weight components include a metal material within a matrix. Also disclosed are methods for fabricating a flare and methods for using a flare. Use of the consumable weights in the flares may reduce the amount of debris falling to ground.

First claim

What is claimed is:

1. A consumable weight component for a flare, the consumable weight component comprising a metal material within a solid continuous phase of a matrix, the metal material comprising from about 50 weight percent to about 98 weight percent of the consumable weight component and the matrix comprising from 2 weight percent to about 50 weight percent of the consumable weight component.

2. The consumable weight component of claim 1 , wherein the metal material comprises a metal, a metal oxide, a metal alloy, or a metal-containing compound.

3. The consumable weight component of claim 1 , wherein the metal material comprises metal particles or a metal powder.

4. The consumable weight component of claim 1 , wherein the metal material comprises tungsten, bismuth, lead, tantalum, tungsten carbide, a metal oxide thereof, an alloy thereof, or a combination thereof.

5. The consumable weight component of claim 1 , wherein the matrix comprises a polymer binder.

6. The consumable weight component of claim 1 , wherein the matrix further comprises at least one of a plasticizer, an oxidizer, a burn rate catalyst, or an additive.

7. The consumable weight component of claim 1 , wherein the metal material comprises tungsten or a tungsten alloy.

8. The consumable weight component of claim 1 , wherein the matrix comprises glycidyl azide polymer.

9. The consumable weight component of claim 1 , further comprising at least one of a plasticizer, an oxidizer, or a burn rate catalyst.

10. The consumable weight component of claim 1 , further comprising at least one of a glycidyl azide polymer plasticizer, strontium nitrate, and iron oxide.

11. The consumable weight component of claim 1 , wherein a density of the consumable weight is essentially uniform throughout the consumable weight.

12. A flare comprising:
a consumable weight adjacent a combustible material in a casing, the consumable weight comprising a metal material within a polymer matrix, the metal material comprising from about 50 weight percent to about 98 weight percent of the consumable weight and the polymer matrix comprising from 2 weight percent to about 50 weight percent of the consumable weight, and wherein the consumable weight is used up during use and operation of the flare.

13. The flare of claim 12 , wherein at least one of the combustible material or the polymer matrix is formulated to emit a peak emission wavelength within the infrared region of the electromagnetic radiation spectrum.

14. The flare of claim 12 , wherein at least one of the combustible material or the polymer matrix is formulated to emit a peak emission wavelength within the visible region of the electromagnetic radiation spectrum.

15. The flare of claim 12 , wherein at least one of the combustible material or the polymer matrix is formulated to emit a peak emission wavelength within the ultraviolet region of the electromagnetic radiation spectrum.

Assignees

• Northrop Grumman Innovation Systems Inc

Inventors

• Widener Jeffrey F
• Nielson Daniel B

Classifications

• B29C48/0021

  combined with joining, lining or laminating · CPC title

• B29C65/48

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title

• F42B12/42

  of illuminating type, e.g. carrying flares · CPC title

• B29L2009/00

  Layered products · CPC title

• B29K2105/16

  Fillers · CPC title