Combustion of aqueous HAN/methanol propellants at high pressures
نویسندگان
چکیده
“Green” monopropellants based on hydroxylammonium nitrate (HAN) are of interest for replacing highly toxic hydrazine in space propulsion systems and other applications. However, their combustion mechanisms at high pressures not well understood. In the present paper, decomposition HAN up to 15 MPa was studied with differential scanning calorimetry, while an aqueous HAN/methanol solution (70.1 wt% 14.9 methanol) a strand burner 30 MPa. The experiments both setups were conducted nitrogen environment. It has been shown that temperature significantly decreases increasing pressure from atmospheric 2 remains virtually constant further decrease is explained by suppressing evaporation HNO3 H2O formed during process. have revealed increase linear burning rate over 50% 12−14 MPa, reaching critical liquid. Other observed dependencies include 9–12 plateau 14–19 20 22–30
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Aqueous mixtures to supercritical temperatures and at high pressures
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ژورنال
عنوان ژورنال: Proceedings of the Combustion Institute
سال: 2021
ISSN: ['1873-2704', '1540-7489']
DOI: https://doi.org/10.1016/j.proci.2020.06.054