Results 41 to 50 of about 979 (209)

An Optimized & Scaled‐Up Synthetic Procedure for Trinitroethyl Formate TNEF

open access: yesPropellants, Explosives, Pyrotechnics, Volume 46, Issue 6, Page 895-898, June 2021., 2021
Abstract Previous reports showed, that tris(2,2,2‐trinitroethoxy)methane, also known as tris(2,2,2‐trinitroethyl) orthoformate or trinitroethyl formate (TNEF), exhibits a very high potential for application due to its excellent energetic properties and compatibility with state of the art binder systems for composite propellants. However, TNEF was never
Dominik E. Dosch   +3 more
wiley   +1 more source

Decomposition Pathways of Ammonium Dinitramide (ADN) and its HNO3‐Clusters Elucidated by DFT‐Calculations

open access: yesPropellants, Explosives, Pyrotechnics, Volume 46, Issue 2, Page 233-244, February 2021., 2021
Abstract Ammonium dinitramide (ADN) may serve as a ‘green’ oxidizer for rocket propellants since it provides chlorine free and minimum signature exhaust gases. However, stability issues and an erratic decomposition behaviour limit its non‐questionable general usability. Nitric acid (HNO3) is a decomposition product of ADN and is known to accelerate the
Johannes Lang, Manfred A. Bohn
wiley   +1 more source

Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance

open access: yesDefence Technology, 2023
Recently, an emerging category green of energetic material ammonium dinitramide (ADN) has exhibited promising application in propellants due to its outstanding merits in energy release and environmental friendliness.
Dun-ju Wang   +6 more
doaj   +1 more source

Modelagem da combustão da dinitramida de amônio por simulação computacional Ammonium dinitramide combustion modeling by computational simulation

open access: yesQuímica Nova, 2009
In this work, the combustion process of ammonium dinitramide, ADN, has been modeled in two different situations: decomposition in open environment, with abundant air and decomposition in a rocket motor internal environmental conditions.
Rene Francisco Boschi Gonçalves   +3 more
doaj   +1 more source

Experiments and simulations on interactions between 2,3-bis(hydroxymethyl)-2,3-dinitro-1,4-butanediol tetranitrate (DNTN) with some energetic components and inert materials

open access: yesFirePhysChem, 2021
In order to survey the application prospects of 2,3-bis(hydroxymethyl)-2,3-dinitro-1,4-butanediol tetranitrate (DNTN, NEST-1, SMX) in high - energy solid rocket propellants and explosives, the interactionsbetween DNTN with some energetic components and ...
Weiqiang Pang   +6 more
doaj   +1 more source

Synthesis of Ammonium Dinitramide by Nitration of Potassium and Ammonium Sulfamate. The Effect of Sulfamate Conterion on ADN Purity [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2008
Nitration of potassium sulphamate was carried out using a mixture of sulphuric and nitric acid at -30 °C. The reaction time was optimized at the mole ratio of sulphuric to nitric acid of (1:3.5).
Gholam Hossein Nazeri   +3 more
doaj  

Ballistic effectiveness of Zr-containing composite solid propellants as a function of binder nature and mass fraction [PDF]

open access: yes, 2013
This paper considers the effects of binder mass fraction on the properties of energetic formulations based on zirconium and zirconium hydride. These ingredients, replacing aluminum in solid rocket motors with low vehicle performance coefficient, may ...
D. B. Lempert   +2 more
core   +2 more sources

The Role of Thrusters in Space Systems [PDF]

open access: yesفناوری در مهندسی هوافضا, 2020
Spacecrafts, such as artificial satellites and space probes have small rockets called thrusters for orbital maneuvering, and satellite attitude control. These thrusters produce thrust by exhausting gases from their nozzles.
Sajjad Hosseinzadeh alqoo   +1 more
doaj  

An overview on properties, thermal decomposition, and combustion behavior of ADN and ADN based solid propellants

open access: yesDefence Technology, 2018
Ammonium dinitramide [NH4N(NO2)2, ADN] is considered as a possible replacement for ammonium perchlorate (AP) in nearly all kind of solid rocket propulsions in the coming future. The reason to use ADN instead of AP in solid rocket propulsion is because of
Pratim Kumar
doaj   +1 more source

Chemical classification of explosives [PDF]

open access: yes, 2020
This work comprehensively reviews some fundamental concepts about explosives and their two commonly used classifications based on either their velocity of detonation or their application.
García Ruiz, Carmen   +1 more
core   +1 more source

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