Computer Science
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977icar...31..277f&link_type=abstract
Icarus, vol. 31, June 1977, p. 277-288.
Computer Science
94
Asteroids, Basalt, Fragmentation, Hypervelocity Impact, Meteoroids, Particle Size Distribution, Ballistic Ranges, Deimos, Kinetic Energy, Phobos, Polycarbonates, Projectile Cratering, Shock Waves, Solar System, Spallation
Scientific paper
As a simulation of collisional processes among solid bodies of various sizes in the solar system, polycarbonate projectiles of mass 0.37 g were impacted against cubic basaltic rocks of about 2 to 10 cm and larger with a velocity of 2.6 km/sec. The corresponding energy imparted per unit mass of target ranges from about 10 to the sixth to 10 to the ninth ergs/g. The phenomena are classified into four categories with increasing target size: (1) complete destruction, (2) remaining core, (3) transition region, and (4) crater formation. Empirical formulas for the cumulative mass of the fragments and the mass of the maximum fragment are given. The similarity of these formulas is briefly discussed. The experimental results are applied to the examination of the hypothesis that a single Martian satellite was once ruptured by impact, leaving the present two satellites. It is suggested that the radius of the parent satellite was larger than about 30 km.
Fujiwara Akira
Kamimoto G.
Tsukamoto Akira
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