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Countdown! NASA Launch Vehicles and Facilities
PMS 018-B
October 1991
Section 4
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The Lightning Mast extends above the Fixed Service
Structure and provides a "cone of protection" over the vehicle and pad
structures. A steel cable starts from a ground anchor 1,100 feet (335 meters)
south of the Fixed Service Structure, angles up and over the lightning mast, and
then extends back down to a second ground anchor the same distance to the north.
Lightning strikes run to ground through this cable. The mast functions as an
electrical insulator, holding the cable away from the tower. The mast, with its
accompanying support structure, lifts the cable 100 feet (30.5 meters) above the
steel of the Fixed Service Structure.
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