Ernst-Christian Koch ABSTRACT: The combustion chemistry of phosphorus and its compounds in pyrotechnic applications is discussed. Whereas red phosphorus (RP) and phosphorus sulfides can be used as fuels, the phosphates can be used as oxidizers in metalcontaining pyrolants. Phosphorus combustion mainly occurs in the gas phase after volatilization of the parent phosphorus source, be it …
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Category:JPyro – Articles
The main category – things that are published in the Journal
Simple Core Design for Neutral Burn Composite Rocket Motors
S. K. Anderson ABSTRACT: Two simple techniques for improving small amateur-type rocket motors are discussed. The first uses a simple, post-cure technique to produce neutral thrust profiles using a simple machinist’s tap. The second uses a small Black Powder pellet to improve reliability and ignition of composite rocket motors. Keywords: rocket motor, composite propellant, thrust …
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Optical Studies of Combustion Chamber Flame in a Hybrid Rocket Motor
Andrew B. Wright, Jason E. Elsasser, M. Keith Hudson, and Ann M. Wright ABSTRACT: The oxygen injector head in UALR’s labscale hybrid rocket motor has been redesigned to include a coaxially located optical port. This port permits viewing directly into the space in front of the fuel grain where combustion is initiated. It is designed …
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Air Blast TNT Equivalency for Rolls of Paper Toy Caps
K. R. Mniszewski and K. L. Kosanke ABSTRACT: A study of the explosive output of rolls of paper toy caps, in variously sized assemblages, was conducted. The testing has shown that toy cap rolls are clearly capable of producing a powerful explosive effect if initiated with a sufficiently energetic event. TNT equivalencies based on toy …
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A Review of the Chemistry and Dynamics of Pyrotechnic Whistles
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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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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