Results 181 to 190 of about 873 (194)

High performance microthruster with ammonium-dinitramide-based monopropellant

Sensors and Actuators A: Physical, 2018
Abstract A high performance environmentally friendly ammonium dinitramide (ADN) based liquid monopropellant was used to develop a thruster with improved performance compared to a conventional hydrogen peroxide propellant microthruster. Compared to regular thrusters, microthrusters have high heat loss due to the higher reactor surface area to volume ...
Doyun Lee, Juwon Kim, Sejin Kwon
openaire   +1 more source

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
openaire   +1 more source

Ammonium Dinitramide:  Kinetics and Mechanism of Thermal Decomposition

The Journal of Physical Chemistry A, 1997
Thermal decomposition of ammonium dinitramide (ADN) has been studied by differential scanning calorimetry (DSC) and thermal gravimetry combined with mass spectrometry (TG−MS). ADN decomposes in the range 130−230 °C with an overall heat release of 240 ± 40 kJ mol-1.
Sergey Vyazovkin, Charles A. Wight
openaire   +1 more source

Combustion of Ammonium Dinitramide, Part 2: Combustion Mechanism

Journal of Propulsion and Power, 2006
Temperature profiles in the ammonium dinitramide (ADN) combustion wave were measured in the 0.04-10 MPa pressure interval using thin tungsten-rhenium thermocouples. The data obtained suggest that the ADN decomposition reaction in the condensed zone plays a dominant role in burning at low pressures. The heat feedback from the gas to the surface appeared
Valery P. Sinditskii, Viacheslav Y. Egorshev, Anton I. Levshenkov, Valery Serushkin   +3 more
openaire   +1 more source

Proton transfer in gas-phase ammonium dinitramide clusters

The Journal of Chemical Physics, 2003
Proton transfer in gaseous ammonium dinitramide (ADN) clusters up to (ADN)2 is studied by using density-functional theory. Proton transfer between the hydrogen dinitramide and ammonia units does not occur in the ADN monomer, rather the ammonia–hydrogen dinitramide complex is stabilized by strong hydrogen bonding.
Alavi, Saman, Thompson, Donald L.
openaire   +2 more sources

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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Surface Energy and Crystallization Phenomena of Ammonium Dinitramide

Propellants, Explosives, Pyrotechnics, 2005
AbstractAmmonium dinitramide (ADN) was characterized during recrystallization from the melt. The surface tension of molten ADN at 97 °C was measured to be 89 mN/m. The wetting angles between molten ADN and different solid surfaces (polytetrafluoroethylene, glass, steel, and aluminum) were determined.
Ulrich Teipel, Thomas Heintz
openaire   +1 more source

Ammonium Dinitramide-Based Monopropellants

2023
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Stabilized spherical particles of ammonium-dinitramide (ADN)

2004
Heintz, Thomas, Pontius, Heike, Teipel, Ulrich   +2 more
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STRUCTURE OF AMMONIUM DINITRAMIDE FLAME AT 4.0 MPa

International Journal of Energetic Materials and Chemical Propulsion, 2002
O. P. Korobeinichev, Alexander A. Paletsky, A. G. Tereschenko, T. A. Bolshova   +3 more
openaire   +1 more source