Results 181 to 190 of about 979 (209)

Design of an ammonium dinitramide compatible polymer matrix

Journal of Applied Polymer Science, 2011
AbstractTo enable future environmentally friendly access to space by means of solid rocket propulsion a viable replacement to the toxic ammonium perchlorate (AP) oxidizer is needed. Ammonium dinitramide (ADN) holds great promise as a green replacement. Unfortunately compatibility issues with many polymer binder systems have hampered the development of ...
Martin Rahm, Eva Malmström, Carina Eldsäter   +2 more
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Thermal analysis of ammonium dinitramide (ADN)

Thermochimica Acta, 2000
Abstract Kinetic constants of decomposition were determined for ADN and prilled ADN by DSC and TG. Pressure DSC at 550 psi air or helium had similar kinetic constants for prilled ADN, namely 29 kcal/mol activation energy and a log frequency factor of ∼14.0 min−1.
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Review of Ammonium Dinitramide Toxicity Studies

2011
Abstract : Ammonium dinitramide (ADN) is a class 1.1 explosive oxidizer being considered for use in solid rocket propellant mixtures. Studies performed evaluating the toxicity of ADN have included an acute and subacute toxicity screen, a 90-day reproductive screen and three follow-on reproductive studies, electron paramagnetic resonance (EPR ...
Teresa R. Sterner, David R. Mattie
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[Study on mutagenicity and teratogenicity of ammonium dinitramide].

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2013
To study the mutagenicity and teratogenicity induced by ammonium dinitramide(ADN).According to technical specifications for toxicity determination of chemicals, Salmonella typhimurium reverse mutation assay (Ames assay), in vivo mammalian erythrocyte micronucleus test, sperm malformation test and teratogenesis test were used to detect the mutagenicity ...
Wen-xia, Du, Yu-ling, Wang, Yuan-han, Sun, Feng, Xie, Zhi-qiang, Chang, Ya-fei, Xing, Yan-wei, Zhang   +6 more
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Separation of Ammonium Dinitramide from Reaction Mixture

Propellants, Explosives, Pyrotechnics, 1999
To separate ammonium dinitramide from the reaction mixture obtained in the reaction between NO2HS2O7 and nitramine in aceto-nitrile and subsequent neutralization with NH3 aqua the following procedure was applied: – separation of the solid precipitated during the reactions; – evaporation of the acetonitrile solution; – extraction of the ...
Monika Malesa, Wincenty Skupiński, Michal Jamróz   +2 more
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Characteristics of NEPE Propellant with Ammonium Dinitramide (ADN)

Advanced Materials Research, 2011
The theoretical performances of NEPE (nitrate ester plasticized polyether) propellant with and without ADN were calculated with minimum free energy method. The burning characteristics and the thermal decomposition of propellants were determined by nickel chromium wire method and TG- DTG, respectively.
Wei Qiang Pang, Hui Xiang Xu, Yang Li, Xiao Bing Shi   +3 more
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Thermal behavior of new oxidizer ammonium dinitramide

Journal of Thermal Analysis and Calorimetry, 2012
Ammonium dinitramide (ADN) is a promising new oxidizer for solid propellants because of its high oxygen balance and high energy content, and halogen-free combustion products. One of the characteristics needed for solid propellants is stability. Heat, light, and moisture are factors affecting stability during storage, manufacture, and use. For practical
Hiroki Matsunaga, Hiroto Habu, Atsumi Miyake   +2 more
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Heat-release mechanism in ammonium dinitramide flame

Combustion, Explosion, and Shock Waves, 2007
To verify the adequacy of various models of heat release in ammonium dinitramide flame to real processes, chemical processes in products of thermal decomposition at a pressure of 10 torr and in ammonium dinitramide [ADN; NH4N(NO2)2] flame at a pressure of 0.4 to 60 atm are numerically simulated. The calculations are performed on the basis of a detailed
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Ammonium Dinitramide-Based Monopropellants

2023
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Ammonium Dinitramide (ADN) Decomposition as Green Propellant

Thermal decomposition of eco-friendly propellants such us ammonium dinitramide (ADN) aims to replace hydrazine in satellite systems. ADN, with formula [NH4]+[N(NO2)2]−, is a promising high-performance rocket propellant. It decomposes cleanly, producing gases such as NH3, H2O, NO, N2O, NO2, HONO, and HNO3, making it an attractive alternative to ammonium
Zakaria Harimech, Mohammed Salah, Rachid Amrousse   +2 more
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