The tracks of the crawler-transporter are visible on the crawlerway (foreground) leading to Launch Pad 39B after the 4-mile journey of Space Shuttle Atlantis, which sits on the pad. At right is the 290-foot high, 300,000- gallon water tank that aids in sound suppression during launch. The water releases just prior to the ignition of the shuttle engines and flows through 7-foot-diameter pipes for about 20 seconds, pouring into 16 nozzles atop the flame deflectors and from outlets in the main engines exhaust hole in the mobile launcher platform. The slow speed of the crawler results in a 6-hour trek to the pad approximately 4 miles away.
NASA/Troy Cryder
2006-08-02
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