Results 161 to 170 of about 611 (206)

An Overview on the Synthetic Routes and Properties of Ammonium Dinitramide (ADN) and other Dinitramide Salts

Propellants, Explosives, Pyrotechnics, 2004
AbstractIn recent years, there has been a considerable interest in the development of novel type of high performance propellants for use in solid rocket motors. Ammonium salt of dinitramidic acid NH4N(NO2)2 (ADN) has attracted wide interest as a potentially useful energetic oxidizer for rocket propellants because of its clean and environment‐friendly ...
Subbiah Venkatachalam, Gopalakrishnan Santhosh, Kovoor Ninan Ninan   +2 more
openaire   +1 more source

Flight Heritage of Ammonium Dinitramide (ADN) Based High Performance Green Propulsion (HPGP) Systems

Propellants, Explosives, Pyrotechnics, 2019
AbstractThe flight heritage for ECAPS’ propulsion technology based of Ammonium DiNitramide (ADN), started 2010 with a successful 5 years on orbit demonstration mission of the PRISMA satellite. Since 2016, launches of satellites from 3 different continents continues to add to the flight heritage.
Mathias Persson, Kjell Anflo, Pete Friedhoff   +2 more
openaire   +1 more source

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
openaire   +1 more source

The properties of ammonium dinitramide (ADN): Part 1, basic properties and spectroscopic data

Journal of Energetic Materials, 2000
Abstract Basic properties and spectroscopic data for the energetic oxidizer ADN (Ammonium dinitramide (NH4N(NO2)2)) are presented. The ADN used for this work was synthesized by a new efficient and environmentally friendly method. The method is based on a direct nitration of salts of sulfamic acid by ordinary mixed acid, followed by neutralization and ...
H. Östmark, U. Bemm, A. Langlet, R. Sandén, N. Wingborg   +4 more
openaire   +1 more source

Modeling the Reactions Between Ammonia and Dinitrogen Pentoxide to Synthesize Ammonium Dinitramide (ADN)

Chemical Engineering & Technology, 2002
Only three references about the reactions of ammonia (NH 3 ) with dinitrogen pentoxide (N 2 O 5 ) have been published in the course of the last 150 years. None of them describes the reactions referring to the products in dependence on the reaction conditions.
C. Frenck, W. Weisweiler
openaire   +1 more source

Study of the thermal initiation of ammonium dinitramide (ADN) crystals and prills

Journal of Energetic Materials, 2000
Abstract The thermal initiation by electron beam heating (and calibrated hot stage), of single crystals and prills of ADN, has been filmed / recorded in an Environmental Scanning Electron Microscope, from the formation of microscopic “reaction sites” (0.01 μm in diameter) to full crystal consumption.
openaire   +1 more source

Modeling of ammonium dinitramide (ADN) monopropellant combustion with coupled condensed and gas phase kinetics

Combustion and Flame, 2014
Abstract A comprehensive multi-phase combustion model has been developed to study the physiochemical processes involved in the combustion of ammonium dinitramide (ADN). The numerical model is based on the conservation equations of mass, species concentration, and energy, and takes into account finite-rate chemical kinetics in both condensed and gas ...
Piyush Thakre, Yi Duan, Vigor Yang
openaire   +1 more source

Degradation of ammonium dinitramide (ADN) in digested sewage sludge under strict anaerobic conditions

Toxicological & Environmental Chemistry, 2000
The biodegradation of one popular nitramine energetics, ammonium dinitramide (ADN) by mixture of denitrifying bacterial species was investigated. ADN was observed to be effectively mineralized in the anaerobic mixed culture. The initial ADN concentration of 250 mg/L was reduced to non‐detectable levels (> 99% removal efficiency) in 5 days of incubation
openaire   +1 more source

Analysis of anionic impurities in ammonium dinitramide (ADN), Part II: Capillary ion electrophoresis

Journal of Energetic Materials, 1996
Abstract A method has been developed to analyze ammonium dinitrimide (ADN), a new energetic material, as well as other anionic impurities in it. This method employs capillary ion electrophoresis with UV detection. Analysis of ADN samples could be done in under 5.5 minutes employing this method.
openaire   +1 more source

Catalytic bed slenderness ratio and ADN/methanol ratio for decomposition and combustion characteristics within ammonium dinitramide (ADN)-based green aerospace thruster

Chinese Journal of Chemical Engineering, 2019
Abstract The decomposition and combustion characteristics of ammonium dinitramide (ADN) based non-toxic aerospace propellant are analytically studied to determine the effects of catalytic bed structure (slenderness ratio) and operation parameters (mass fraction ratio of ADN/CH3OH) on the general performance within the ADN-based thruster.
Jun Chen, Guoxiu Li, Tao Zhang, Yinglong Liu, Rui Yang, Yang Chen   +5 more
openaire   +1 more source