Kazuomi Itoh, Dayu Ding and Tadao Yoshida* Abstract: Spectra and color values of the light from LEDs and liquid colors were measured using the PMA-11C7473-36 spectrometer as a preliminary study of the color of fireworkflames. The light from LEDs was stable and reproducibly measured. The color values of the light from LEDs did not vary …
Continue reading Spectroscopic Measurement of Light and Flame of LEDs and Liquid Colors
Category:Original articles
These articles are now free to download
Metal–Fluorocarbon Pyrolants: VII. Crackling Effect Based on Mg/KClO4/(C2F4)n
Ernst-Christian Koch Abstract: Amixture of magnesium, potassium perchlorate, KClO4, and polytetrafluoroethylene, (-C2F4-)n, displays an audible crackling effect with nice sparks. Keywords: crackling effect, magnesium, potassium perchlorate, polytetrafluoroethylene, Teflon™ Ref: JPyro, Issue 24, 2006, pp11-16 (J24_11)
Application of Conducting Composition Fuseheads in Pyrotechnic Devices
Vojtech Pelikan Abstract: The electrical properties of bridgeless fuseheads were examined. A conducting composition conducting composition based on the mixture lead styphnate, Viton binder and conductive admixture was used as the fusehead as the fusehead priming mixture. Several types of conducting admixtures, namely two types of natural finely milled graphite and special conducting carbon black, …
Continue reading Application of Conducting Composition Fuseheads in Pyrotechnic Devices
Reaction propagation between fireworks shells and compositions confined in steel pipes
E. Contestabile and B. von Rosen Abstract: This study presents the experimental results on the ignition of linear arrays of fi reworks articles and bulk stars and describes their propensity to mass explode. Star and report shells, roman candles, and bulk cylindrical and spherical stars were functioned in steel pipes through initiation with a small …
Continue reading Reaction propagation between fireworks shells and compositions confined in steel pipes
JPyro – Issue 24, Winter 2006 – Contents
Full Papers: Application of Conducting Composition Fuseheads in Pyrotechnic Devices Metal–Fluorocarbon Pyrolants: VII. Crackling Effect Based on Mg/KClO4/(C2F4)n Spectroscopic Measurement of Light and Flame of LEDs and Liquid Colors Spectroscopic Measurement of Burning Stars The Search For The Glitter Phenomenon An Evaluation of Lightning Thermo TubeTM as a Pyrotechnic Ignition System Primer Gunshot Residue Detection …
Continue reading JPyro – Issue 24, Winter 2006 – Contents
Interior Pressure in the Mortar and Motion of a No. 3 Shell in a Fireworks Shot
Yuzo Ooki, Dayu Ding, Masamori Higaki and Tadao Yoshida* Abstract: Interior pressure in a fireworks mortar and initial velocity for the shot of a no. 3 shell were measured and results were analyzed. The observed initial velocity was mainly explained by the action of the interior pressure during the shot. On the other hand, a …
Continue reading Interior Pressure in the Mortar and Motion of a No. 3 Shell in a Fireworks Shot
TEST POST for payments only
This downloads the shellcalc paper as a trial only ($0.01)
The Combustion Products of Novel High-Nitrogen Energetic Materials
David E. Chavez, Michael A. Hiskey, My Hang Huynh, Darren L. Naud, Steven F. Son and Bryce C. Tappan Abstract: High-nitrogen energetic materials based on the tetrazine and tetrazole ring systems have shown unique and unpredictable combustion behavior. Unlike traditional energetic compounds, such as 2,4,6-trinitrotoluene (TNT) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), which derive their energy by the …
Continue reading The Combustion Products of Novel High-Nitrogen Energetic Materials
Laser-Initiated Reactions of Energetic/Thermitic Composites
Jared C. Gump and Suhithi M. Peiris Abstract: Researchers are attempting to prepare smaller (nano-scale) metal particles, and nano-scale thermitic (metal–metal-oxide) composites. When added to energetic compositions, these nano-materials could burn during or close behind the shock front produced by an explosive material. Therefore, investigation of their combustion kinetics is important, especially when the investigation …
Continue reading Laser-Initiated Reactions of Energetic/Thermitic Composites
New Approaches to Model Pyrotechnic Reactions
Stefan Kelzenberg, Norbert Eisenreich and Volker Weiser Abstract: In most cases pyrotechnic mixtures are constituted from granular components. A theoretical study of such a granular system describes the temperature and concentration evolution in the energetic material by using hot spots as source terms for temperature and particles. The progress of the reaction is mainly influenced …
Continue reading New Approaches to Model Pyrotechnic Reactions