Investigation of vertical distribution of atmospheric parameters to be used in spacecraft landing models

The article deals with the modeling of atmospheric parameters for use in simulated manned spacecraft landing models, as well as the purpose and function of the unit determining external conditions in the general manned spacecraft landing model. The review of initial data for modeling the vertical distribution of atmospheric parameters and the problems of their use is provided, the possibility and expediency of using the Global Radiosonde Archive data for these purposes is studied, the description, structure and simplified radiosonde data analysis procedure are presented. Provided are the analysis results based on the proposed procedure for two areas of possible landing of the reentry vehicle of the advanced manned transport spacecraft Federation, and the results obtained are compared with the nominal parameters of the standard atmosphere.