Exterior Ballistics of Firework Stars

Yuzo Ooki, Dayu Ding, Morimasa Higaki, and Tadao Yoshida

Abstract: Burning and shot experiments have been carried out to examine the burning time and the trajectory of burning firework stars. The burning time in flight was longer than the stationary burning time. The trajectory of a burning star in the air was modeled assuming the linear burning rate of the star and CD = at + b. It was found that there are sometimes abnormal trajectories and interruption of the burning during flight for a large star with high initial velocity.

Keywords: Exterior ballistics, firework star, burning rate, initial velocity

JPyro, Issue 25, 2007, pp37-43

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