This
is where the magic happens. Actual launching pads
where science and hope come together to make a miracle
happen. It is from these remote patches of ground
in the eastern swamps of Florida that the United States
sends people into space on board Space Shuttles. The
shuttles arrive at either of the launch pads riding
on a massive crawler. It moves the spacecraft very
slowly into the launch gantry which will hold the
shuttle securely until take off. This is officially
called the Fixed Service Structure, and contains a
crane and three swing arms for gripping the shuttle
and its boosters. There are several arms used for
various mechanical and fuel-related needs, and a gangway
so astronauts and other personnel can get into the
shuttles. This is called the Orbiter Access Arm. Even
though it is 65-feet long, in the event of an emergency,
it can be in place in 15 seconds. Another huge piece
of equipment is the Rotating Service Structure. It
is like a giant form-fitting cap that swings into
place, covering the shuttle. This is used to actually
put the cargo in the shuttle bay. Most cargo loading
is done on the launch pad to save time. The launch
pads are octagons covering about 1/4 of a square mile.
They are 8,716 feet apart from each other. It is rare,
but you can occasionally see a shuttle at each of
the launch pads. Both pad A and pad B have been in
service since the 1960's. In 1975 work began retrofitting
them to handle space shuttles, which are much heavier
than ordinary rockets (about 6,000,000 pounds each).
Shuttles were launched exclusively from pad A until
January, 1986. The first shuttle launched from pad
B exploded shortly after takeoff.
-
During liftoff, a 300,000-gallon water tank releases
its load through a system of nozzles to create a
spray which reduces the volume of the space shuttle
to about 142 decibels. Without it, the noise of
takeoff would damage payloads.
- The
launch pads have Flame Trenches which deflect the
heat and smoke from shuttle launches so they don't
damage any structures.