Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1453g&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1453
Physics
Scientific paper
In this study, we analyze results of cosmic bodies' collisions with planetary atmosphere and planetary surface. Using the basic differential equations [1] one can introduce dimensionless parameters describing a problem. Then we distinguish two key dimensionless parameters with the following physical meaning: (1) the ballistic coefficient α, which shows the ratio between the mass of the atmospheric column along the trajectory and the body's pre-entry mass; (2) the mass loss parameter β, which depends on the ratio between the fraction of the kinetic energy arriving at the unit body's mass as heat and the effective destruction enthalpy. These parameters explicitly characterize the ability of entering body to survive during atmospheric entry and to reach the ground [2]. The processes accompanying atmospheric entry essentially depend on values of these two parameters as well. Thus different events could be associated with different groups with similar predictable consequences. The ballistic coefficient and mass loss parameter can be derived by several existing techniques [3].
Gritsevich M. I.
Stulov V. P.
Turchak L. I.
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