Abstract
Tethered satellite system consists of main satellite, subsatellite and tether in zero gravity environment. Tether has characteristics that is light weight and flexibility. Therefore, tether is used widely in space. Authors propose a method of cargo transfer using tether tension. Historically, object is moved by rocket thrustor in space, but this method needs fuel in tank. This problem can be solved using tether. In this paper, The object is assumed as rigid body. So, object is rolled by tether tension. This paper tries tension control method for cargo transfer using optimal control and energy method. Authors confirmed rolling motion of cargo was controlled by tether tension.
