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US 11,014,859 B2Granted
Compositions usable as flare compositions, countermeasure devices containing the flare compositions, and related methods
AssigneeNorthrop Grumman Systems Corporation
InventorsDaniel B. Nielson, Curtis W. Fielding
Life of this patent
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Abstract
A composition that includes a fuel and a perfluoropolyether (PFPE) is disclosed. The composition may be used as a flare composition in a countermeasure device. Countermeasure devices including the flare composition are also disclosed, as are methods of forming grains of the countermeasure device.
Claims20
A composition, comprising:
- a fuel comprising one or more of aluminum, bismuth, copper, iron, hafnium, magnesium, palladium, tantalum, tin, titanium, zinc, zirconium, or an alloy thereof;
- a perfluoropolyether (PFPE) comprising a chemical structure of RH—CF2O—(CF2CF2O)m—(CF2O)n—CF2—RH, wherein RH is a functional group selected from the group consisting of an acrylate, an alcohol, an alkyl amide, an alkoxy silane, an amide, an amido silane, an ester, an ethoxylated alcohol, methacrylate, a methoxy, a phosphate, and a phosphate dispersion, m is an integer between 1 and 50, and n is an integer between 1 and 50;
- and
- an isocyanate compound,
- the PFPE comprising from about 15% by weight (wt %) to about 45 wt % of the composition.
2 more elements
A composition, comprising:
- a fuel;
- a perfluoropolyether (PFPE) comprising a chemical structure of HOCH2CFCF3OCF2CF2CF2CF2—CH2CF2OCF2CF2OCF3CFCF2OCF3CFCF2OCF3CFCH2OH;
- and
- an isocyanate compound,
- the PFPE comprising from about 15% by weight (wt %) to about 45 wt % of the composition and the fuel comprising from about 45% wt % to about 70 wt % of the composition.
2 more elements
A countermeasure device comprising a casing and a flare composition within the casing, the flare composition comprising:
- a fuel comprising one or more of aluminum, bismuth, copper, iron, hafnium, magnesium, palladium, tantalum, tin, titanium, zinc, zirconium, or an alloy thereof;
- a perfluoropolyether (PFPE) comprising a chemical structure of RH—CF2O—(CF2CF2O)m—(CF2O)n—CF2—RH, wherein RH is a functional group selected from the group consisting of an acrylate, an alcohol, an alkyl amide, an alkoxy silane, an amide, an amido silane, an ester, an ethoxylated alcohol, methacrylate, a methoxy, a phosphate, and a phosphate dispersion, m is an integer between 1 and 50, and n is an integer between 1 and 50;
- and
- an isocyanate compound,
- the PFPE comprising from about 15% by weight (wt %) to about 45 wt % of the composition.
2 more elements
A method of forming grains of a countermeasure device, comprising:
- forming a flare composition comprising a fuel comprising one or more of aluminum, bismuth, copper, iron, hafnium, magnesium, palladium, tantalum, tin, titanium, zinc, zirconium, or an alloy thereof, an isocyanate compound, and perfluoropolyether (PFPE) comprising a chemical structure of RH—CF2O—(CF2CF2O)m—(CF2O)n—CF2—RH, wherein RH is a functional group selected from the group consisting of an acrylate, an alcohol, an alkyl amide, an alkoxy silane, an amide, an amido silane, an ester, an ethoxylated alcohol, methacrylate, a methoxy, a phosphate, and a phosphate dispersion, m is an integer between 1 and 50, and n is an integer between 1 and 50, the PFPE comprising from about 15% by weight (wt %) to about 45 wt % of the composition;
- and
- casting the flare composition into grains.
A composition, comprising:
- a fuel comprising magnesium and aluminum;
- a perfluoropolyether (PFPE) comprising a chemical structure of RH—CF2O—(CF2CF2O)m—(CF2O)n—CF2—RH, wherein RH is a functional group selected from the group consisting of an acrylate, an alcohol, an alkyl amide, an alkoxy silane, an amide, an amido silane, an ester, an ethoxylated alcohol, a methacrylate, a methoxy, a phosphate, and a phosphate dispersion, m is an integer between 1 and 50, and n is an integer between 1 and 50;
- and
- an isocyanate compound,
- the PFPE comprising from about 15% by weight (wt %) to about 45 wt % of the composition.
2 more elements
Dependencies are inferred from the claim text.