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- W3204371912 abstract "With an objective to establish the safety criteria for rocket launch sites, collision experiments and a simulation were performed assuming that a rocket has dropped and collided onto the ground surface. Discussions using experiments were given on blast waves and scattering of debris which have the largest effect among accidents caused by explosives. TNT converted amounts were derived from different propellants. In the case of assuming an accident of a large rocket colliding at a low speed of 30 m/sec, a consideration only on combustion gas contained in a motor case may suffice, of which TNT conversion rate is 0.2%. Blast wave pressure from a booster in an H-II rocket and its safe distance were derived as 1.38 kPa and 280 m (the current criteria use 2290 m). The maximum distance of debris scattering depends on the size of a rocket motor rather than the collision speed. A ten times greater amount of propellant doubles the distance. The maximum scattering distance is about 1000 m. Discussions were given on fracture modes of the motor by using a simulation that considers the loading conditions and the structure of the motor in a solid fuel rocket. The calculation results showed a rough agreement with the experimental results. 1 ref., 14 figs." @default.
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- W3204371912 date "1994-10-07" @default.
- W3204371912 modified "2023-09-22" @default.
- W3204371912 title "Study of safety criteria for rocket launch sites; Rocket uchiage ji no anzensei ni kansuru kenkyu" @default.
- W3204371912 hasPublicationYear "1994" @default.
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