Preignition Products from Propellants at Simulated High-Altitude Conditions

摘要: Abstract In view of the destructive ignitions that occur in hypergolic test firings attitude-control motors under simulated high-altitude conditions, preignition behavior MMH, UDMH, A-50 and N2H4 with N2O4 was examined at low pressures temperatures laboratory. At NO2 temperatures, such as those would be encountered combustion chambers during starts space, ignition these fuels significantly delayed. During period, relatively involatile reaction products were formed between NO2. fuels. Infrared spectrophotometry, mass spectrometry, differential thermal analysis, other techniques used to examine residues. The IR absorption curves consistent major component MMH residue could behave an explosive monopropellant MMH.nitrate, spectra residues or suggest hydrazine nitrate constitutent re...