Mathematics
Scientific paper
Nov 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009m%26ps...44.1421c&link_type=abstract
Meteoritics & Planetary Science, vol. 44, Issue 10, p.1421-1430
Mathematics
2
Mathematic Model, Stardust Space Mission(S), Shock Wave, Porosity
Scientific paper
The capture of cometary fragments in aerogel by the Stardust mission is analogous to the process of meteoroid deceleration in the Earth’s atmosphere. We present a simplified model for the formation of the tracks formed in aerogel by hypervelocity impacts of cometary material. Using a hydrodynamic approach to model this class of problem overcomes some of the errors associated with previous semi-analytical models for track formation (Coulson 2009). The hydrodynamic models developed allow the particle velocity, temperature and pressure to be calculated as a function of track length within aerogel. A qualative description of how this model can be extended to the formation of bulbous cavities using the Chapman-Jouquet theory is provided.
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