L(aunch)-1 == Rotating Service Structure (RSS) , Sunday, May 16, 2011
May 15, 2011 by petecrow
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Launch Pad 39-A shortly before rotating service structure (RSS) retraction began.
This series of photographs shows the retraction of the rotating service structure (RSS) that keeps the shuttle safe on the launching pad which must be retracted in the hours before launch. The retraction of the rotating service structure (RSS) from the shuttle Endeavor was scheduled for Noon EDT, Sunday, May 15, 2011. In fact, it began a few minutes early. Retraction takes about 45 minutes. The next major step for the launch is fueling. This is scheduled to begin at 11:36 pm, May 16, 2011, roughly twelve hours after the RSS has been retracted. The Astronauts will be brought to the launch pad starting about 4 am. If all goes well Endeavour will lift off Pad 39-A at 8:56 am, Monday, May 16, 2011, on her way to the International Space Station.
This is the final launch of the Endeavour, the newest member of the shuttle fleet. Mission STS-134 is the second to last shuttle mission.
Launch Pad 39-A shortly before retraction of the rotating service structure (RSS) began.
Retraction of rotating service structure (RSS) complete. Ready to go fly. Retraction was completed about 20-minutes ahead of schedule. With actual launch 21 hours away, weather remained unchanged with only a 30-percent chance of unfavorable weather scrubbing the flight.