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go for main engine start six five four

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three two one and zero and liftoff of

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space shuttle Atlantis we should be

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crest of its historic achievements in

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Roger roll

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Houston is now controlling

7
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the roll maneuver is completed

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Atlantis's and ahead

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on course for a 51.6 degree 136 by 36

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and the three main engines on Atlantis

11
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have now been throttled down to

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seventy-two percent of rated thrust as

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the orbiter prepares to pass through the

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area of maximum dynamic pressure on a

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engines now beginning to throttle back

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up all three engines looking really good

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back at full throttle now it lifts off

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the fully fueled Shuttle boosters and

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external tank wait four and a half

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million pounds it now has burned half of

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that liftoff weight and propellant one

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minute 30 seconds into the flight all

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three auxiliary power units that provide

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hydraulic power to the orbiters systems

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in good shape as are the fuel cells

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providing electricity to all of the

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systems onboard atlantis is already 19

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miles an altitude down rates from the

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Kennedy Space Center 20 miles traveling

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2,500 miles per hour coming up on

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staging the point at which the twin

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solid rocket boosters burn out and

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booster separation confirmed the onboard

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guidance system has done its job of

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setup settling out any of the