Computer Science
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995bdsg.rept.....s&link_type=abstract
Final Report Boeing Defense and Space Group, Seattle, WA.
Computer Science
Asteroids, Atmospheric Effects, Atmospheric Entry, Cratering, Hypervelocity Impact, Planetary Craters, Terminal Ballistics, Venus Atmosphere, Venus Surface, Density Distribution, Overpressure, Pressure Distribution, Shock Waves, Transient Pressures
Scientific paper
The objectives are to look at time scales of overpressure compared to cratering and to determine: what are the transient pressure and density due to atmospheric entry; do shock waves evacuate ambient gas; do transient atmospheric disturbances 'settle down' during cratering; can the pressure/density field be approximated as quasi-static; how does disturbance scale with impactor size; and what is the role of atmospheric thickness. The general approach is to perform inexpensive exploratory calculations, perform experiments to validate code and observe crater growth, and to follow up with more realistic coupling calculations. This viewgraph presentation presents progress made with the objective to obtain useful scaling relationships for crater formation when atmospheric effects are important.
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