Burn rate modifier
AssigneeThales Australia Limited
InventorsGarry Warrender, Ashley Jones
Life of this patent
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Abstract
The invention relates generally to burn rate modifiers and propellants comprising a burn rate modifier. The invention also relates to methods of producing a propellant comprising a burn rate modifier as well as an ammunition cartridge comprising the propellant. The burn rate modifier comprises a compound of formula 1 and the propellant comprises a compound of formula 1 and an energetic material.
Claims19
A propellant comprising:
- an energetic material in the form of granules;
- and
- a compound of formula 1
- wherein
- R1 is selected from the group consisting of H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R2 is selected from the group consisting of —H, —OH, —O—(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R3 is selected from the group consisting of —H and —C1-4alkyl;
- and
- R4 is selected from the group consisting of —H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- and wherein at least one of R1, R2 and R4 is OH.
A method of preparing a propellant, comprising coating granules of an energetic material with a compound of formula 1 or dispersing a compound of formula 1 throughout granules of energetic material, wherein the compound of formula 1 is:
- wherein
- R1 is selected from the group consisting of H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R2 is selected from the group consisting of —H, —OH, —O—(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R3 is selected from the group consisting of —H and —C1-4alkyl;
- and
- R4 is selected from the group consisting of —H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- and wherein at least one of R1, R2 and R4 is OH.
A propellant comprising:
- an energetic material;
- a graphite layer;
- and
- a compound of formula 1
- wherein
- R1 is selected from the group consisting of H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R2 is selected from the group consisting of —H, —OH, —O—(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R3 is selected from the group consisting of —H and —C1-4alkyl;
- and
- R4 is selected from the group consisting of —H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- and wherein at least one of R1, R2 and R4 is OH.
An ammunition cartridge comprising a propellant, a casing, a primer and a projectile, wherein the propellant comprises:
- an energetic material;
- and
- a compound of formula 1
- wherein
- R1 is selected from the group consisting of H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R2 is selected from the group consisting of —H, —OH, —O—(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- R3 is selected from the group consisting of —H and —C1-4alkyl;
- and
- R4 is selected from the group consisting of —H, —OH, —O(C1-4alkyl), —C1-4alkyl, —NHC1-4alkyl, —N(C1-4alkyl)2, —NO2, —NHNH2, —N(C1-4alkyl)NH2, and —CN;
- and wherein at least one of R1, R2 and R4 is OH.
Dependencies are inferred from the claim text.