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\h

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George Diller/STS-132 Launch Commentator: Firing chain is armed. Sound suppression water system activated.

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T minus 13... 12... 11... 10... nine... eight... go for main engine start... six... five... four... three... two... one... and zero...

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and liftoff of space shuttle Atlantis, reaching the crest of its historic achievements in space.

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Launch Control Center: Houston, Atlantis is in a roll.

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Charles Hobaugh/Capcom:  Roger, roll, Houston.

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Houston is now controlling. The roll maneuver is complete.

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Atlantis is in a heads-down position on course for a 51.6 degree, 136 by 36 statute mile orbit.

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The three main engines on Atlantis have now been throttled down to 72 percent of rated 
thrust as the orbiter

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prepares to pass through the area of maximum dynamic pressure on the vehicle in the lower atmosphere.

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Engine is now beginning to throttle back up.
Charles Hobaugh/Capcom:  Atlantis you are go at throttle up.

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Ken Ham/STS-132 Commander: Copy, go at throttle up.

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Kyle Herring/STS-132 Ascent Commentator: All three engines looking really good, back at full throttle now.

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At liftoff, the fully fueled shuttle, boosters and external tank weighed 4.5 million pounds.

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It now has burned half of that liftoff weight in propellant.

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One minute, 30 seconds into the flight, all three auxiliary power units that provide hydraulic power to the

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orbiter's systems in good shape as are the fuel cells providing electricity to all of the systems on board.

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Atlantis is already 19 miles in altitude, 
downrange from the Kennedy Space Center 20 miles, traveling 2,500 mph.