James Stuart ABSTRACT: Electro explosive devices (EEDs) are often required to undergo a test in which they are placed near a high-power radio transmitter. The purpose is to see whether electromagnetic energy might fire the EED. Consideration of the “Q” or quality factor of an EED system affords guidance in choosing a transmitter and test …
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Category:JPyro – Articles
The main category – things that are published in the Journal
Illuminants and Illuminant Research
David R. Dillehay ABSTRACT: The use of pyrotechnic compositions for the production of light has a long history. Most improvements were made mainly by trial and error with many misunderstandings about the cause and effect relationships from observations. Significant advancements in the mechanisms and theory of combustion have increased the understanding of many effects and …
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A Report on the Fireworks Accident at Carmel, Western Australia
R. I. Grose and K. L. Kosanke ABSTRACT: The investigation into an accident at Carmel, Western Australia in March 2002 found that the magnitude of explosions occurring in licensed and unlicensed storage areas was significantly greater than would have been expected from the UN hazard classification of items stored within them. Use of revised UN …
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Review of: Rocket Propulsion Elements, Seventh Edition – George P. Sutton, Oscar Biblarz
Rocket Propulsion Elements, Seventh Edition George P. Sutton, Oscar Biblarz Review by K. Koenig The seventh edition continues the high standards of this long-running text. The analysis, although a little sparse, is clearly presented. As in the previous editions, there is an abundance of figures and tables. And there is much information on practical design …
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Guanidinium Azo-Tetrazolate (GAT) as a High Performance Hybrid Rocket Fuel Additive
M. Keith Hudson, Ann M. Wright, Chris Luchini, Paul C. Wynne, and Sterling Rooke ABSTRACT: The purpose of this investigation was to find a high regression rate fuel suitable for use as a mixture with hydroxyl-terminated polybutadiene (HTPB). Guanidinium azo-tetrazolate (GAT) is the compound that was the focus of our research. GAT is a salt …
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Essential Molecular Orbital Theory for the Study of Pyrotechnics
R. B. Lowry ABSTRACT: The Linear Combination of Atomic Orbitals (LCAO) model is presented as it applies to small heterogeneous molecules. A non-mathematical approach is used to enable the discussion of the terminology used. The production of light and the rules that govern it are examined. Keywords: linear combination of atomic orbitals, LCAO, energy level, …
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Review of: Amateur Rocket Motor Construction – David Sleeter
Amateur Rocket Motor Construction David Sleeter Review by John Steinberg As President of the Pyrotechnics Guild International and as an avid rocket enthusiast myself, it gives me great pleasure to provide a glowing review for this exemplary text. Superlatives are truly in order. While my personal interests lie more along the lines of pyrotechnic rocketry, …
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Industrial Scale Nano-Aluminum Powder Manufacturing
David Pesiri, Christopher E. Aumann, Luke Bilger, David Booth, R. Doug Carpenter, Rob Dye, Edward O’Neill, Debbie Shelton, and Kevin C. Walter ABSTRACT: Producing nano-aluminum powder (n-Al) on a commercial scale places a great deal of emphasis on practical manufacturing issues. Scientists and engineers in the laboratory commonly evaluate nano-aluminum powder in the technical terms …
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Experimenting with High Explosive Fuel Explosions for Movies and Television
Stephen Miller ABSTRACT: A number of ‘brute force’ techniques used within the special effects industry utilise high explosives to create the classic ‘Hollywood’ style fuel explosion seen in many a movie and television programme. Limited experiments have shown that application of techniques similar to those used in shaped charge anti-tank weapons (the Munroe effect) can …
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A Simplified Method for Determining the Strength of a Tube Subjected to Internal Pressure
L. Weinman Keywords: hoop stress, mortar, strength, rocket casing ——————————————————————————– Ref: JPyro, Issue 20, 2004, pp71-72 (J20_71)