Abstract: This paper is concerned with the dynamics and control for planar,large angle rapid slew maneuvering of a flexible multi body spacecraft,consisting of a rigid central body and a flexible beam.Nonlinear infinite dimensional model of the system is derived by employing the Hamilton's principle.By using the measurements of the attitude angle of the rigid central body and its velocity only,a kind of linear feedback control law is presented.Based upon LaSalle's invariance principle,it is shown that the implementation of the control algorithm results in asymptotic stability of the closed loop system.