K. L. & B. J. Kosanke ABSTRACT: A variety of flash powders were tested under weak confinement to determine the sound pressure levels and tonal characteristics produced. In these tests it was found that: the sound output from mixtures prepared with potassium perchlorate from four manufacturers are essentially equivalent; there are significant differences in the …
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Month:May 2009
Simple Measurements of Aerial Shell Performance
K. L. & B. J. Kosanke ABSTRACT: In designing the most effective choreographed aerial fireworks displays, it is useful to know when, where, and how each shell burst will appear. To do this, in addition to aesthetic features like colors, etc., three aerial shell performance parameters are needed. These parameters are: time to shell burst …
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An Instrument for the Evaluation of Black Powder as a Propellant for Aerial Shells
K. L. & B. J. Kosanke ABSTRACT: None of the standard laboratory tests for Black Powder provide a direct indication of its performance characteristics for propelling aerial fireworks shells. Typically such testing must be performed by firing dummy projectiles on a test range—with all the problems that can entail, including the use of fairly large …
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Metal–Fluorocarbon Pyrolants: IX. Burn rate and Radiometric Performance of Magnesium/Teflon/Viton (MTV) Modified with Zirconium
Ernst-Christian Koch Abstract: The burn rate, u (mm s−1) of fuel rich magnesium/Teflon/Viton (MTV) is increased by 65% upon addition of zirconium whereas the spectral efficiency Eβ (J g−1 sr−1) is reduced by 15%. Keywords: Burn rate, zirconium, magnesium, MTV, polytetrafluoroethylene, radiometry, TeflonTM, VitonTM Ref: JPyro, Issue 28, 2009, pp16-18 (J28_16)