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Asteroid entry in Venusian atmosphere: Pressure and density fields effect on crater formationThe 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.
Document ID
19960002983
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Schmidt, Robert (Boeing Defense and Space Group Seattle, WA, United States)
Date Acquired
September 6, 2013
Publication Date
March 14, 1995
Subject Category
Lunar And Planetary Exploration
Report/Patent Number
NAS 1.26:199155
NASA-CR-199155
Accession Number
96N12992
Funding Number(s)
CONTRACT_GRANT: NASW-4671
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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