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Title of Article

BALLISTICS AND THE FAILURE OF THE BODIES IN THE PLANET ATMOSPHERE


Issue
4
Date
2011

Article type
scientific article
UDC
539.3
Pages
130-132
Keywords
 


Authors
Egorova Lidiya Aleksandrovna
NII mekhaniki Moskovskogo gosuniversiteta im. M.V. Lomonosova

Lokhin Valeriy Viktorovich
NII mekhaniki Moskovskogo gosuniversiteta im. M.V. Lomonosova


Abstract
The problem of the stressed-strained state which occurs in an elastic spherical body when it enters the planet atmosphere at a super-orbital (space) velocity is analytically solved. The analytical solution is obtained in the form of a series of Legendre polynomials for the case of a viscous gas flowing over an elastic sphere in a quasi-static formulation. It is shown that critical deformations arise due to aerodynamic forces inside the ball closer to his windward side and, as the time goes on, occupy more and more space inside the ball, leading to its failure. The solution makes it possible to describe the nature of the body failure and evaluate the height at which it starts for well-known meteoroids at a given entry velocity into the Earth's atmosphere

File (in Russian)