Science and Technology of Energetic Materials

Vol.68, No.5 (2007)


Burning characteristics of firework stars and compositions (*in Japanese)
Yasuhiro Sashimura, Hideo Watanabe, Mamoru Horiuti, Maiko Watanabe, Kazuomi Itoh, Dayu Ding, and Tadao Yoshida


The burning behavior and burn-time of firework stars and their compositions were observed. The burning behavior is discussed from the perspective of specific spectral peaks observed in the combustion flame. Although the intensity of combustion flame fluctuated greatly with time, the total burning times of the stars had little scatter. During the combustion of the powdered star composition that had been loaded into paper tubes, at first the flame projected from the upper end of the tube. Sometimes, the flame disappeared below the upper end of the tube, with the combustion continuing down inside the tube; however, the total combustion time did not change much. For an estimation of burn rate of a firework star, the combustion of the powdered composition in a paper tube may be useful from the view point of simplicity and the small amount of scatter in the observed data.

> Full text (Open access*)


Firework star, Star composition, Burning time, Spectrum peak profile.

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