Mathematics
Scientific paper
Nov 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995cait.rept.....a&link_type=abstract
Annual Report No. 2, 1 Feb. 1995 - 31 Jan. 1996 California Inst. of Tech., Pasadena, CA.
Mathematics
Cratering, Impact Damage, Impact Tests, Mathematical Models, Penetration, Planetary Surfaces, Surface Properties, Asteroids, Comets, Meteorite Craters, Planetary Composition, Planetary Craters
Scientific paper
Support is requested for continuation of a program of dynamic impact (harpoon) coring of planetary, comet, or asteroid surface materials. We have previously demonstrated that good quality cores are obtainable for planetary materials with compressive strengths less than 200 MPa. Since the dynamics of penetration are observable on a Discovery class spacecraft, which images the sampling operation, these data can be used with a model developed under this project, to measure in-situ strength and frictional strength of the crust of the object. During the last year we have developed a detailed analytic model of penetrator mechanics. Progress is reported for the solid penetrators experiments, the CIT penetrator model, and the impact spall sampling apparatus.
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