RT Journal Article ID 340db61c58c39393 A1 Sinditskii, Valery A1 Serushkin, Valery V. A1 Filatov, Sergey A. A1 Egorshev, Viacheslav Yu. T1 FLAME STRUCTURE OF HYDRAZINIUM NITROFORMATE JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 2002 FD 2002-01-01 VO 5 IS 1-6 SP 576 OP 586 K1 Hydrazinium nitroformate K1 temperature profile K1 combustion mechanism K1 flame structure AB Flame structure of hydrazinium nitroformate (HNF) has been investigated by fine tungsten-rhenium thermocouples. The occurrence of an exothermic chemical reaction in condensed phase of HNF has been observed and attributed to reaction of N2H4 with decomposition products of nitroform anion yielded ammonium nitioformate (ANF) along with H2O, N2O and N2. The mechanism of the chemical processes that can result in these products has been proposed. Calculation of the heat balance at the boundary of condensed and gaseous phases has shown that the condensed phase heat release is quite considerable at low pressures. Analyzing of surface temperature data has allowed the assumption that the surface temperature of HNF is controlled by dissociation of the salt. Two distinct flames were observed above the burning surface of HNF in the temperature profiles at low pressures. Based on possible pathways of the nitroform decomposition, a suggestion has been made that decomposition of nitroform and oxidation of N2H4, NH3 and carbon-containing products (supposedly, nitrile N-oxide, CNO, or its isomer isocyanate, NCO radicals) take place in the first flame zone. Temperature in the second flame zone rises due to the exothermic decomposition of N2O and NO. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,76f8e14974df93a8,340db61c58c39393.html