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JOURNALS // Prikladnaya Mekhanika i Tekhnicheskaya Fizika // Archive

Prikl. Mekh. Tekh. Fiz., 2019 Volume 60, Issue 5, Pages 13–18 (Mi pmtf387)

This article is cited in 2 papers

Analytical solution of equations of the physical theory of meteors for a non-fragmenting body with ablation in a nonisothermal atmosphere

M. D. Braginab, G. A. Tirskiibc

a Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Moscow, 125047, Russia
b Moscow Institute of Physics and Technology, Dolgoprudny, 141701, Russia
c Institute of Mechanics at the Lomonosov Moscow State University, Moscow, 119192, Russia

Abstract: Analytical solutions of equations of the physical theory of meteors for a non-fragmenting meteoroid in an isothermal atmosphere are derived. The ablation parameter is defined as a power-law function of velocity of trajectory motion. An expression relating the meteoroid mass and its velocity and an expression relating the meteoroid velocity, its initial parameters, and atmospheric pressure are obtained. In addition, simple approximate formulas for the meteoroid mass and velocity at the initial trajectory segment and relations for determining the extreme values of the basic dynamic characteristics of the meteoroid (deceleration, dynamic pressure, ablation rate, mid-section area, and kinetic energy per unit path) are also derived.

Keywords: physical theory of meteors, meteoroid, deceleration, ablation, nonisothermal atmosphere.

UDC: 533.6.11

Received: 10.01.2019
Revised: 03.04.2019
Accepted: 29.04.2019

DOI: 10.15372/PMTF20190502


 English version:
Journal of Applied Mechanics and Technical Physics, 2019, 60:5, 793–797

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