David Howard Abstract: ‘‘Fireplay’’ is a generalist overview of pyrotechnics. It is indebted (and acknowledges its debt) to seminal works such as Brock’s ‘‘History of Pyrotechnics’’ (1949), yet develops an aesthetic – even metaphysical – discussion of the key question for our profession: ‘Why do fireworks move people?’ Keywords: History, aesthetics, gunpowder Ref: JPyro, Issue …
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Category:JPyro – Articles
The main category – things that are published in the Journal
A Thermokinetic Model for the Combustion of Strobe Composition
Matthew L. Davies Abstract: A model chemical reaction scheme, in which a substance undergoes a two-stage decay process, is developed. It is shown that this reaction scheme follows the Shimizu hypothesis for pyrotechnic strobe combustion; both decay stages are temperature dependent with only the second generating a significant quantity of heat. The model is derived …
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Metal–Fluorocarbon Pyrolants: VIII.1‡ Behavior of Burn Rate and Radiometric Performance of two Magnesium/Teflon/Viton (MTV) Formulations upon Addition of Graphite§
Ernst-Christian Koch Abstract: The burn rate, u (mm s−1) of fuel rich magnesium/Teflon/Viton (MTV) is increased by 23-36 % upon addition of 5 wt% graphite whereas the spectral efficiency Eβ (J g−1 sr−1) remains largely unaffected. Keywords: Burn rate, graphite, magnesium, MTV, polytetrafluoroethylene, radiometry, TeflonTM, VitonTM Ref: JPyro, Issue 27, 2008, pp38-41 (J27_38)
Movement Dynamics Of Firework Shells Fired From Mortars
V. Ya. Yakovlev and S. K. Chankaev Abstract: Experimental investigations were carried out using 125 and 310 mm firework shells. The pressures in a mortar during firing were measured. A mathematical model of the firing action concerning low pressure in the space behind the shell was developed. Here it is supposed that non-simultaneous processes of ignition …
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Comparison of 6-DOF Trajectory Model with Modified Linear Theory for Bullets
Dimitrios N. Gkritzapis, Elias E. Panagiotopoulos, Dionissios P. Margaris and Dimitrios Papanikas Abstract: A modified linear model is proposed for fast and accurate prediction of short and long-range trajectories of spin-stabilized bullets via atmospheric flight to a final impact point. This model is compared with a full 6-DOF trajectory model. The computational flight analysis takes …
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The Debris Hazard from Fireworks Held in Steel ISO Containers
Roy Merrifield and Peter Allan Moreton Abstract: A number of serious accidents in European Union countries involving explosions of fireworks stored in steel ISO freight containers has shown that the hazards associated with bulk-stored fireworks might be greater than previously thought. To address this problem an EU research programme was initiated, part of which involved …
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Copper in Pyrotechnics
Georg Steinhauser, Karina Tarantik and Thomas M. Klapötke Abstract: Copper compounds play a key role in the development of “greener” pyrotechnics by substitution of noxious barium compounds from green colored effects. The application of many copper(ii) compounds in pyrotechnics is limited because of their noble and often hygroscopic character. We have investigated nitratocuprates(ii) as well …
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ESI for JPyro, 26, 2007, p24
Ignition and Combustion of Aluminium in High Explosives Attached are three SEM-images of the aluminium powder used in the study at different resolutions Please download the ESI to the original article below Note: Downloads of errata and supplementary materials are free Click here to return to original paper: Ignition and Combustion of Aluminium in High Explosives
Thermal Stability of Hydrazinium Nitroformate (HNF) Assessed by Heat Generation Rate and Heat Generation and Mass Loss
Manfred A. Bohn Abstract: HNF, hydrazinium nitroformate, H3NNH2 +·C(NO2)3−, is a water soluble salt. It has a positive oxygen balance of 13%, a much more positive enthalpy of formation than ammonium perchlorate (AP) and amuch higher heat of explosion than AP, 5579 J g−1 against 1972 J g−1. Additionally it has no chlorine and all …
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Synthesis, Structural and Reactive Characterization of Miscellaneous Nanothermites
Denis Spitzer and Marc Comet Abstract: In this paper, we report the elaboration and the characterization of several kinds of nanothermites made at the French German Research Institute of Saint‑Louis (ISL). Three types of materials are presented herein: tungsten trioxide based nanothermites obtained by physical mixing of this metallic oxide withaluminum nanoparticles; tungsten trioxide based …
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