Aerodynamic characteristics for grid-type surfaces under free molecular flow

Space technics and technology


Аuthors

Nadiradze A. B.*, Rakhmatullin R. R.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: nadiradze@mai.ru

Abstract

The results of numerical calculations of aerodynamic characteristics for two different grid-type surfaces under free molecular flow are presented. The relationships between transmission and exchange factors and mesh density, azimuthal and polar incident angles for particles, and local accommodation coefficients are examined. The domain of applicability for an assumption on mesh azimuthal symmetry is estimated.

Keywords:

grid-type surfaces, aerodynamic characteristics, pulse exchange factors, transmittance, free molecular flow.


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