二重円管を用いた爆発破砕実験によるNASA 標準破砕モデルの評価

摘要

This study will examine the applicability of the National Aeronautics and Space Administration (NASA) standardbreakup model 2000 revision to explosion breakup in space. The specimens of double tubular aluminum wereexplosively expanded to fragmentation. The driver was a column of the high explosive PETN inserted into the centralbore and initiated by exploding a bundle of fine copper wires using a discharge current from a high-voltage capacitorbank. Observations were carried out with a high-speed video camera. Expansion rate and the collection fragmentswill be analyzed based on the method used in the NASA standard breakup model to be compared with the explosionmodel adopted in the NASA standard breakup model. And this paper evaluated NASA standard breakup model aboutsize distribution, average cross-section area, area mass ratio distribution, delta velocity distribution. The piece shape isassumed by a rectangular solid, and it is compared with a measurement result from photograph and balance.