Gas-forming agent composition
US-2023271897-A1 · Aug 31, 2023 · US
Hydroxylammonium nitrate monopropellant with burn rate modifier
US10040730B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10040730-B2 |
| Application number | US-201515116039-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 9, 2015 |
| Priority date | Feb 21, 2014 |
| Publication date | Aug 7, 2018 |
| Grant date | Aug 7, 2018 |
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- Title
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- Abstract
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Abstract
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A monopropellant includes 30-70% by weight of an oxidizer including hydroxylammonium nitrate, 5-50% by weight of a fuel, and a burn rate modifier in a non-zero amount of up to 3% by weight. The burn rate modifier can be selected from vanadium salts, iron salts, and combinations thereof. The monopropellant is a stable liquid between −20 C and 100 C at ambient pressure.
First claim
Opening claim text (preview).
What is claimed is: 1. A monopropellant comprising: 30-70% by weight of an oxidizer including hydroxylammonium nitrate; 5-50% by weight of a fuel; an amount, A1, by molar fraction of at least one stabilizer; and an amount, A2, by molar fraction of a burn rate modifier selected from the group consisting of vanadium salts, iron salts, and combinations thereof, wherein a ratio of A1 to A2 is greater than 1.0 to sustain combustion upon torch ignition in air at 1 atm pressure. 2. The monopropellant as recited in claim 1 , wherein the ratio is between 7 and 35. 3. The monopropellant as recited in claim 1 , wherein the burn rate modifier includes the vanadium salt. 4. The monopropellant as recited in claim 2 , wherein the vanadium salt is selected from the group consisting of vanadium pentoxide, ammonium metavanadate, vanadyl acetylacetonate, vanadyl sulfate, and combinations thereof. 5. The monopropellant as recited in claim 1 , wherein the burn rate modifier includes the iron salt. 6. The monopropellant as recited in claim 5 , wherein the iron salt is iron nitrate. 7. The monopropellant as recited in claim 1 , wherein the fuel includes at least one of methanol, ethanol, and glycine, the at least one stabilizer includes at least one chelating agent, and the burn rate modifier includes the vanadium salt.
Assignees
Inventors
Classifications
Liquid carbonaceous fuels · CPC title
by reaction of two or more liquids · CPC title
- C06B31/00Primary
Compositions containing an inorganic nitrogen-oxygen salt · CPC title
Compositions in which the components are separately stored until the moment of burning or explosion, e.g. "Sprengel"-type explosives; Suspensions of solid component in a normally non-explosive liquid phase, including a thickened aqueous phase · CPC title
- C01B21/14Primary
Hydroxylamine; Salts thereof · CPC title
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- What does patent US10040730B2 cover?
- A monopropellant includes 30-70% by weight of an oxidizer including hydroxylammonium nitrate, 5-50% by weight of a fuel, and a burn rate modifier in a non-zero amount of up to 3% by weight. The burn rate modifier can be selected from vanadium salts, iron salts, and combinations thereof. The monopropellant is a stable liquid between −20 C and 100 C at ambient pressure.
- Who is the assignee on this patent?
- Aerojet Rocketdyne Inc
- What technology area does this patent fall under?
- Primary CPC classification C06B31/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 07 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).