| 초록 |
A newly popular solid oxidizer ADN [ammonium dinitramide, NH4N(NO2)2] was synthesized from direct nutralization of sulfuric acid/nitric acid and potassium sulfamate. A liquid monopropellant composed of ADN and other addtives including simple molecular fuel was then prepared and characterized focusing on thermal properties. The monopropellant for an attitude control thruster of satellite projectiles should achieve high performance in exothermic decomposition or combustion reactions in the absence of external oxygen. This work utilized pure water for main solvent, which is safe in handling and easy in controlling the catalytic decomposition. The obtained basic properties of the test sample were 1.25~1.40 g/cm3 for true density, below 170℃ for decomposition temperature, and -30℃ for frozen point. The calorimetric values of the monopropellant was 466.73 J/g |
