Matthew L. Davies ABSTRACT: Although the first efforts in understanding pyrotechnic whistles began over fifty years ago, there is still no firmly established mechanism that accurately describes their operation. This review describes the progress made and the current state of knowledge of combustion phenomena in whistle devices. In addition, investigations into identifying alternative safer fuels …
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Category:JPyro – Articles
The main category – things that are published in the Journal
Review of: Explosives – R. Meyer , J. Köhler, & A. Homburg
Explosives, Fifth Completely Revised Edition Rudolf Meyer (deceased), Josef Köhler, and Axel Homburg Review By L. Weinman This book, for those who are not familiar with it, it is a compendium of short references to various explosives and related items of interest. There are some limited references to pyrotechnic materials and items, but the material …
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Review of: Propellants and Explosives: Thermochemical Aspects of Combustion – Naminosuke Kubota
Propellants and Explosives: Thermochemical Aspects of Combustion Naminosuke Kubota Review by M. K. Hudson Kubota’s new title covers a wide area, as its name suggests. However, as its subtitle indicates, the author has ocused on the thermo aspects of combustible materials. An examination of the book shows that it contains nine chapters, which can be …
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Review of: Firework Art – Mark Flemming
Firework Art Mark Flemming Reviewed by Tom Smith, CarnDu Ltd, UK This is a very nostalgic book, giving examples of firework labels, posters and point of sale material over the period of my childhood as well as before. The labels are exceptionally well reproduced, my only critisism would be that additional information, including the approximate …
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An Introduction to the European CHAF Project
D. Chapman Abstract: The CHAF* project was instigated following a series of accidents in large-scale storage of fireworks, by far the most serious being that at Enschede in the Netherlands. The project aims to quantify and suggest means to control the hazards associated with large-scale fi reworks storage by small-, medium- and large-scale investigations on …
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Notes on chlorinated rubber and some other chlorine donors
Barry T. Sturman Abstract: A brief review is given of the history and technology of chlorinated rubber. The empirical formula is approximately (C10H11Cl7)n, corresponding to 65.4% Cl. The structure is complex, and includes partially chlorinated cyclohexane rings. All the Cl is released as HCl on pyrolysis. The enthalpy of formation was estimated from the reported …
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Pressure in a Mortar and Estimation of Muzzle Velocity of Expelled Stars
Dayu Ding, Morimasa Higaki, Yuzo Ooki, and Tadao Yoshida* Abstract: Firing firework star experiments have been carried out using 20 mm and 25 mm inner diameter steel mortars equipped with two or four pressure transducers, and the pressure profi les were recorded. The relative pressure profiles of the four positions in the mortar changed with …
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A Thrust and Impulse Study of Guanidinium Azo-Tetrazolate as a Fuel Additive for Hybrid Rocket Motor
Ann Wright, Warfield Teague M. Keith Hudson, Andrew Wright, Patrick Foley Abstract: Guanidinium azo-tetrazolate (GAT) is an organic salt with a high percentage of nitrogen. GAT was mixed with the standard hybrid rocket fuel, hydroxyl-terminated polybutadiene (HTPB), in concentrations of 15% and 25% by mass. The fuel grains with the GAT additive were fired for …
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Review of: Black Powder Manufacture Methods and Technique – Ian von Maltitz’s
Black Powder Manufacture Methods and Technique Ian von Maltitz Review by John Bergman In this book, Mr. von Maltitz has compiled a wealth of historical data about black powder, descriptions of commercial and amateur production methods, equipment, ingredients, formulae, and even comparative performance data. Probably nowhere else is so much basic information about this most …
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Review of: Introductory Practical Pyrotechnics – Tom Perigrin
Introductory Practical Pyrotechnics Tom Perigrin Review by Tom Dimock As a pyrotechnist who has a rather public persona on the Internet, I am often called upon to recommend a book on the craft of fireworks to beginning pyrotechnicians. This was always a problem because the available literature was either too advanced or too dated to …
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