Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..384g&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 384-385 (SEE N87-23341 16-91)
Physics
Geophysics
Ejecta, Impact, Momentum Transfer, Obliqueness, Projectile Cratering, Angles (Geometry), Meteorites, Targets, Trajectory Analysis, Velocity
Scientific paper
Experimental studies of oblique impact indicate that projectile richochet occurs for trajectory angles less than 30 deg and that the richocheted projectile, accompanied by some target material, are ejected at velocities that are a large fraction of the impact velocity. Because the probability of occurrence of oblique impact less than 30 deg on a planetary body is about one out of every four impact events, oblique impacts would seem to be a potential mechanism to provide a source of meteorites from even the largest atmosphere-free planetary bodies. Because the amount of richocheted target material cannot be determined from previous results, additional experiments in the Ames Vertical Gun laboratory were undertaken toward that purpose using pendulums; one to measure momentum of the richocheted projectile and concomitant target ejecta, and a second to measure the momentum transferred from projectile to target. These experiments are briefly discussed.
Gault Donald E.
Schultz Peter H.
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