Thermophysical and gas dynamics problems of anti-meteorite protection for modern spacecrafts

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Abstract

The results of numerical calculations of the destruction of the protective shields of the spacecraft under the action of a micrometeorite impact are presented. A gas-dynamic numerical simulation of the process of high-speed penetration by micrometeorite of a spaced protective shield of a spacecraft has been carried out, taking into account fragmentation and the formation of a cloud of fragments after passing through the protective shield. In a three-dimensional formulation, the calculated configurations of the cloud of fragments of the impactor and the target for the initial velocities of the impactor up to 10 km/s are obtained. The high efficiency of the used design of a protective screen made of multidirectional corrugated grids as a means of fragmentation and dispersion of the kinetic energy of impact of small high-speed particles, reducing the average pressure pulse on the protected device by two to three orders of magnitude, is shown.

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V. V. Kim

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

S. I. Martynenko

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

A. V. Ostrik

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

I. V. Lomonosov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru

Corresponding Member of the RAS

Russian Federation, Chernogolovka, Moscow Region

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Supplementary files

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2. Fig. 1. Configuration of bodies for v0 = 10 km/s at time points t = 0 (a), 10 (b), 20 (c) and 30 (d) mks.

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3. Fig. 2. Two fractions of the density of the fragment cloud: in the range of density values p = 0.01–2 g/cm3 (a) and p = 2-3 g/cm3 (b).

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4. Fig. 3. Dynamics of transmission of the perpendicular component of the pulse from the striker to the screen elements for V = 7 km/s.

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5. Fig. 4. The back sides of the detector plates for V = 7 km/s (a) and 10 km/s (b).

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