Feature influence of gas-surface interaction on the aerodynamic characteristics of aerospace vehicle

Аuthors

Voronich I. V.^1*, Myint Z. M.^2**

1. Institution of Russian Academy of Sciences Dorodnicyn Computing Centre of RAS, 40, Vavilov st., Moscow, 119333, Russia
2. Moscow Institute of Physics and Technology (National Research University), 9, Institutskiy per., Dolgoprudny, Moscow region, 141701, Russia

*e-mail: i.voronich@yandex.ru
**e-mail: zayyarmyomyint@gmail.com

Abstract

The paper presents results of calculation of aerodynamic characteristics of typical aerospace vehicle, obtained with the Monte-Carlo method based on two different gas-surface interaction models — Maxwell model and Cercignani—Lampis—Lord (CLL) model. With the use of these models sensitivity of force and moment coefficients of vehicle in hypersonic free molecular flow to variation oj accommodation and temperature properties of surface has been studied with multiple molecular reflections taken into account. Corrections to aerodynamic characteristics, given by CLL model, are defined. The technique and results can be used for aerospace vehicle design.

Keywords:

high-altitude aerodynamics, gas-surface interaction, Monte-Carlo method, aerodynamic characteristics