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635 Newest Publications in propellants, explosives, pyrotechnics

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Environmental Impact of Energetics on Test Ranges

23-Nov-2016 | Hristo P. Hristov, Hristo I. Hristov, Propellants, Explosives, Pyrotechnics, 2016

Abstract In recent years, pollution of environmental components onsite training and test ranges has drawn attention of governments and defence ministries. In a great number of NATO and EU countries, measures have been taken including an assessment of test ranges status and their pollution ...

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On the Mechanism of Efficiency of Lead Azide

22-Nov-2016 | Boris Khasainov, Marc Comet, Bernard Veyssiere, Denis Spitzer, Propellants, Explosives, Pyrotechnics, 2016

Abstract The mechanism of superior efficiency of lead azide (LA) in comparison with mercury fulminate (MF) is not understood. Indeed, both primary explosives have quite close detonation velocities and result in a large amount of condensed lead (Pb) and mercury (Hg), respectively. We explore an ...

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Improved Efficiency by Adding 5‐Aminotetrazole to Anthraquinone‐Free New Blue and Green Colored Pyrotechnical Smoke Formulations

16-Nov-2016 | Johann Glück, Thomas M. Klapötke, Magdalena Rusan, Anthony P. Shaw, Propellants, Explosives, Pyrotechnics, 2016

Abstract Pyrotechnical smoke formulations are predominantly used in the military sector for obscuring or signaling purposes. For decades, the performance was the only point of interest and no toxicity issues have been considered. Although fuels like sulfur have already been replaced in colored ...

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Environmental Assessment of Ammunition: the Importance of a Life‐Cycle Approach

16-Nov-2016 | Carlos Ferreira, José Ribeiro, Sara Almada, Fausto Freire, Propellants, Explosives, Pyrotechnics, 2016

Abstract Environmental research related with military actions has been focused on the monitoring of contaminants from live‐fire training and munitions disposal. It is important to take a further step and use this information to assess the environmental impacts of this contamination. In ...

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In‐line Rheological Behaviors of Gun Propellant Substitute Assisted with Supercritical CO2 in Extrusion Processing

16-Nov-2016 | Yajun Ding, Rongjun Wei, Sanjiu Ying, Propellants, Explosives, Pyrotechnics, 2016

Abstract To improve the rheological behaviors of gun propellants, SC‐CO2 was injected into the gun propellant substitute in extrusion processing. A slit die rheometer was used to investigate the in‐line rheological behaviors of CA solution. A Power model was applied to describe the rheological ...

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Anomalous Oxidative Diffusion in Titanium Pyrotechnic Powders

10-Nov-2016 | William W. Erikson, Eric N. Coker, Propellants, Explosives, Pyrotechnics, 2016

Abstract It has long been observed that oxidation processes in metals tend to follow a parabolic rate law associated with the growth of a surface oxide layer. Here we observe that for certain titanium powders, the expected parabolic law (∝ t ) is recovered, yet for others, the exponent differs ...

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Considerations for Fast Cook‐Off Simulations

09-Nov-2016 | Matthew L. Gross, Trevor D. Hedman, Karl V. Meredith, Propellants, Explosives, Pyrotechnics, 2016

Abstract Various aspects of fast cook‐off simulations are explored with a spatially one‐dimensional, fully transient numerical model. The model is applied to HMX and consists of equations for the solid (condensed) phase, the gas phase, and the surrounding steel container. The condensed phase ...

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Thionyl Nitrate as Nitrating Agent for the Synthesis of 2‐[Butyl(nitro)amino]ethyl Nitrate (n‐BuNENA)

09-Nov-2016 | Yadollah Bayat, Fatemeh Esmailmarandi, Propellants, Explosives, Pyrotechnics, 2016

Abstract The synthesis of n‐BuNENA by reaction of N‐butylethanolamine and thionyl nitrate is reported herein. Various nitrating agents were studied and thionyl nitrate was found to be a promising nitrating agent. The reaction conditions for the nitration with thionyl nitrate were optimized and ...

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Aluminum Agglomeration on Burning Surface of NEPE Propellants at 3–5 MPa

03-Nov-2016 | Xin Liu, Wen Ao, Huan Liu, Peijin Liu, Propellants, Explosives, Pyrotechnics, 2016

Abstract Aluminum agglomeration and agglomerate sizes of NEPE propellants were studied by cinephotomicrography at pressures of 3 and 5 MPa. Accumulation, aggregation, and agglomeration of aluminum particles similar to that at pressures below 1 MPa were observed. Coalescence of two agglomerates ...

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Periodates as Potential Replacements for Perchlorates in Pyrotechnic Compositions

02-Nov-2016 | Jason S. Brusnahan, Anthony P. Shaw, Jared D. Moretti, William S. Eck, Propellants, Explosives, Pyrotechnics, 2016

Abstract The periodate salts NaIO4 and KIO4 are critically evaluated as potential replacements for KClO4 in pyrotechnic compositions. Key differences between the physical and chemical properties of the periodate and perchlorate oxidizers are presented. The thermochemical characteristics of ...

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