4.4 Article

Heat of Formation of ADN-Based Liquid Monopropellants

Journal

PROPELLANTS EXPLOSIVES PYROTECHNICS
Volume 44, Issue 9, Pages 1090-1095

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/prep.201900142

Keywords

Ammonium dinitramide; monopropellant; enthalpy

Funding

  1. Swedish Armed Forces
  2. European Community's seventh framework programme [218819]
  3. European Community's Horizon 2020 research and innovation programme [640376]

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Energetic ionic liquids have obtained substantial attention the last decades as less toxic, or green, monopropellants to replace the carcinogenic and toxic hydrazine. Among the most promising hydrazine substitutes are propellants based on ammonium dinitramide, ADN, dissolved in a fuel/water mixture. These types of propellants are single phase mixtures, and thus their heats of formation are influenced by the heats of solution and heats of mixing of the respective components used. These enthalpy contributions have been measured for three different ADN-based propellants (LMP-103S, FLP-106 and FLP-107) and their specific impulses have been calculated. The results show that ADN heat of solution must be considered in order to accurately calculate the specific impulse.

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