... At the analysis of orbital stages following problems are solved: - A substantiation of a choice of type of a working orbit , - An estimation of an orbit evolution from action of Earth atmosphere (including calculation of the space vehicle existence time and etc.) and fro m Earth non-centra l gravitational field, - Calculation of space vehicle transfer maneuvers fro m a initial orbit into a working orbit , - Calculation of working ... In window Facility Database press Cancel. ...