Overall view of a carbon jet vane and actuator, located on the bottom of one of
the booster's fins.
The jet vanes (which extended into the engine exhaust, but which appear to have been
trimmed for display purposes, presumably due to the support post), in
conjunction with the air rudders, were used
to control the missile's attitude. During the early portion of the missile's
flight, it was controlled by the jet vanes. When the missile reached a
velocity sufficient for it to become aerodynamically stable, the air rudders
took over the control function.
The carbon vanes and air rudders were driven by the same actuator assembly
and turned simultaneously.