A very significant part of the total number of his works K. E. Tsiolkovsky devoted to the problem of flying with the help of various jet devices It can be said without exaggeration that Tsiolkovsky attached paramount importance to his work in this direction .. Continuously, one after another, until the death of Tsiolkovsky, articles, notes and calculations devoted to a comprehensive analysis of the capabilities and methods of interplanetary communications follow. The enormity of the problem and the consequences of its solution were not so clearly clear for anyone as for Tsiolkovsky. None of the authors who dealt with the problem of interplanetary flights went as far as Tsiolkovsky in discussing the future social and economic results of solving this problem.