The paper studies the modeling and control of a flexible structure spacecraft. The author establishes the optimal control for the tuned navigation of a satellite and a flexible structure spacecraft. He obtains Brownian oscillation solutions to Molnya's transfer orbit and the design of the tracking trajectory for the system with dynamic obstacles. Aspects of control and communication with a visibility model for terrestrial exploration via a space monitoring station are presented. Based on the above the author obtains a design for long range navigation in space and a robust hybrid controller for the A.A.F.M. auto pilot system.