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HAN (hydroxylammonium nitrate)

HAN-based thruster test
HAN-based monopropellant thruster test at Primex Aerospace. Credit: Primex Aerospace / Aerojet
HAN (hydroxylammonium nitrate) is a relatively new, synthetic, rocket fuel with the chemical formula NH2OH+NO3. HAN has the potential to be used both as a liquid monopropellant and an ingredient in solid propellants. It has the advantage of being more environmentally friendly than the toxic hydrazine presently used in thrusters on most spacecraft

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