Determination of Aerial Shell Burst Altitudes

One type of fireworks data generally only guessed at is the altitudes of aerial shells at the time of their burst. In addition to addressing general curiosity, this data is often necessary when designing major aerial displays. Frequently it is important to know fairly accurately at what altitudes the various shells will appear. The rule-of-thumb, …
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Understanding Product Liability (Parts I and II)

During the past couple years, in the course of assisting attorneys as an expert witness, I have come to learn a little about product liability. Because this subject is so important to our industry and because product liability laws are not well understood by many of us, I have decided to share with you what …
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An Evaluation of “Pyro-Flake” Titanium for Use in Fireworks

Several months ago, our company was approached by the Suisman Titanium Corporation. They told us that they were considering introducing some new titanium products specifically intended for the fireworks trade, and that their materials would be priced below that of titanium sponge. They asked whether we would perform an evaluation of their “Pyro-Flake” titanium and …
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HDPE Mortars for Electrically Fired Displays

When firing by hand, the problems of steel mortars can easily be over-looked. However, even for relatively small electrically fired displays, steel mortars and the usual alternatives (paper and PVC mortars) have limitations that are difficult to cope with. Steel mortars are heavy; when several hundred may be needed for a show, their weight can …
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Electrical Firing of Musically Choreographed Aerial Fireworks Displays

1.0 Introduction: There are a number of reasons why one might be reluctant to consider abandoning traditional show firing methods in favor of performing electrically fired shows, especially those choreographed to a musical program. One reason is the perceived high cost of performing such shows. Other reasons might be a lack of detailed knowledge about …
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The Physics, Chemistry and Perception of Colored Flames, Part 2

4.0 The Chemistry of Colored Flames 4.1 A Summary of General Chemistry for Colored Flame Production This paper is intended to benefit readers who do not enjoy a thorough understanding of chemistry. Thus, before dealing with more advanced topics, a discussion of some aspects of general chemistry may be of benefit. Any reader with an …
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Festival Ball Comets

Festival ball comets are inexpensive, easy to assemble and produce a nice effect. Before discussing their construction, let me acknowledge that, as far as I know, the basic idea for this firework originated with Bob Winokur. The device consists of a festival ball shell with comet composition coating the fuse end of the shell. Festival …
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Taming Triangle Diagrams

ABSTRACT: A “dialogue” is presented wherein the author demystifies the triangle diagram or trigonometrical graph and shows how it can be a means of discovering hidden relationships between the components of a pyrotechnic composition, finding optimum formulations for a pyrotechnic system, and for summarizing the results of pyrotechnic experiments. Ref: Selected Pyrotechnic Publication of K.L. …
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Detection of Underwater Blasting Using Electrical Noise

ABSTRACT: We conducted a small-scale experiment on soil simulating underwater blasting and studied the shape of waves as well as properties of electrical noises generated during blasting. From these noise waves, we wanted to detect any failure in initiation of the charge or blasting conditions, etc. It was observed that the main source of noise …
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Study on the Reaction Mechanism of Black Powder And Its Applications Ballistics of Firework Shells

ABSTRACT: Black Powder is said to be the oldest explosive. At present, it is one of the most important explosives. However, the burning reaction mechanism of materials in the mixture is still obscure. The purpose of this study is to clarify this mechanism and illustrate some applications of Black Powder. The burning reaction of Black …
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