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US 10,040,730 B2Granted
Hydroxylammonium nitrate monopropellant with burn rate modifier
AssigneeAerojet Rocketdyne, Inc.
InventorEdward J. Wucherer
Life of this patent
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Abstract
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.
Claims7
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.
1 more element
Dependencies are inferred from the claim text.