Experimental Composite Propellant An Introduction to Properties and Preparation of Composite Propellant Design, Construction, Testing and Characteristics of Small Rocket Motors Terry W. McCreary Review by Terry W. McCreary There are many references available to address design, construction, and evaluation of chemical propulsion devices. Terry McCreary has provided a fresh look at the science and …
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Category:JPyro – Articles
The main category – things that are published in the Journal
Fixed and Scanning Infrared Radiometers for Combustion Studies
Kathy Underhill-Shanks and M. Keith Hudson & Matthew J. Russo ABSTRACT: The feasibility of using lead selenide (PbSe) detectors and simple electronic circuitry, including a 600 Hz chopper and chopper frequency/ phase reference circuit, to detect infrared emissions from flames and rocket motor plumes was demonstrated. A fixed wavelength radiometer, employing one-inch interference filters and …
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Practical Applications of Capillary Extrusion Rheometry to Problems in the Processing of Energetic Materials
Roy E. Carter ABSTRACT: Energetic materials are manufactured by processes involving flow, often under conditions of elevated temperature and pressure. Such processes include extrusion, casting and pressing. If the manner in which the material flows under these conditions is not well understood, production and quality problems may result. A capillary extrusion rheometer is essentially a …
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Studies of the Thermal Stability and Sensitiveness of Sulfur/Chlorate Mixtures Part 4. Firework Compositions and Investigation of the Sulfur/Chlorate Initiation Reaction
D. Chapman, R. K. Wharton, J. E. Fletcher and A. E. Webb ABSTRACT: Fireworks formulations were modified to produce compositions containing sulfur/chlorate mixtures, and their thermal stability and mechanical sensitiveness were studied. The results indicate that the presence of sulfur/chlorate mixtures in fireworks compositions reduces the ignition temperatures to values well below those obtained with …
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An Introduction to Chemical Thermodynamics Part 2—Entropy, Molecular Disorder, and the Second and Third Laws
Barry Sturman ABSTRACT: This is the second in a series of articles, prepared at the request of the publisher of this Journal, presenting an introductory outline of chemical thermodynamics and chemical kinetics, with emphasis on those aspects of particular relevance to pyrotechnics. The First Law of Thermodynamics, which was the subject of the first article, …
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A Survey of Analytical Tools for Explosion Investigations
K. R. Mniszewski & R. Pape ABSTRACT: Practical analytical techniques that have been found to be useful in explosion investigation include: timeline analysis, experimental data comparisons, thermochemical code analysis, TNT and other air blast equivalency techniques, ground shock analysis, dynamic gas concentration estimates, simple fuel/air explosion codes, damage pattern analysis and system safety analysis methods. An …
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Pyrotechnic Particle Morphology—Low Melting Point Oxidizers
K. L. Kossanke, B. J. Kosanke & Richard C. Dujay ABSTRACT: The morphology (size, shape and surface features) of the constituent particles in a pyrotechnic composition affects its performance. While this is particularly true for high melting point fuels and oxidizers in the composition, to a lesser extent it is also true for those with …
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Speculation on the Effects of Gunshot or Explosive Residues on Historic Silk Flags
Charles S. Tumosa ABSTRACT: Historic battle flags and uniforms are collected by museums, and many have significance as icons representative of their owners as well as historic context. The effects of battle, both mechanical and chemical, have an impact on the projected lifetimes of these objects in museums website here. Modern air quality, as well …
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Summary Report on Tests on Display Fireworks Conducted by the Bureau of Mines for the U.S. Department of Transportation Relative to Hazard Classification of Display Fireworks
J. Edmund Hay Introduction: The U.S. Department of Transportation (DOT) requested the U.S. Bureau of Mines to conduct tests on explosive substances and articles in support of the involvement of both agencies with the United Nations (UN) Group of Experts on Explosives pursuant to the development of an international classification system for explosive substances and …
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Brief Survey of Chromium Toxicity
Monona Rossol I recently read some information in the pyrotechnic literature[1] about chromium toxicity, which, unfortunately, was not completely correct. Since there are some serious health concerns regarding chromium, this brief article has been written to present a survey of some of what is known.[2–4] Chromium (Cr) is probably the most complicated of the metals …
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