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The face of an actuator assembly.

Each actuator assembly drove an air rudder and a jet vane; each set of air rudder and jet vane was driven by the same actuator and turned simultaneously.

During the first portion of the missile's flight, it was controlled by four carbon jet vanes located within the engine exhaust. When the missile reached a velocity sufficient for it to become aerodynamically stable, four air rudders located at equidistant points around the outside of the tail section took over the control function.