Abstract: A flight control device is described for a flying object assembly. The assembly has a plurality of fins symmetrically disposed thereabout. Each of the fins is movable between a retracted position and an extended position. A support is provided for the flight control device. The flight control device further includes a frame for each fin which is connected to the fin by a pivot and is freely movable with respect to the support. The fin can be angularly displaced about the pivot. A main shaft is rotatably supported on the support and is coaxial with the axis about which the frame is movable. Also provided on the support, is a motor having a motor shaft. Included, are rotating means connecting the motor to rotate the main shaft. A guide is actuated by the main shaft and a follower which is carried by the fin engages the guide to angularly displace the fin about the pivot when the guide is actuated by the motor.