Detail of the air
rudder mounting plate; this Redstone is displayed without its air
rudders. Note the socket for the air
rudder's shaft near the top of the mounting plate.
The same actuator
assembly would drive both the air rudder and the jet vanes.
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.