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Atlantis on the pad
Space shuttle Atlantis is delivered to Kennedy Space Center's launch pad 39B on August 2 to begin final preparations for blastoff on the STS-115 mission to resume construction of the International Space Station.

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Atlantis rollout begins
Just after 1 a.m. local time August 2, the crawler-transporter began the slow move out of the Vehicle Assembly Building carrying space shuttle Atlantis toward the launch pad.

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Atlantis on the move
Space shuttle Atlantis is transported to the cavernous Vehicle Assembly Building where the ship will be mated to the external fuel tank and twin solid rocket boosters for a late-August liftoff.

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Rollback preps ordered for Atlantis
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: August 28, 2006


Credit: NASA-KSC
 
In what amounts to a "perfect storm" of high winds, high stakes and international drama, tropical storm Ernesto is now predicted to hit southern Florida as a possible category two or three hurricane early Wednesday, passing within a few miles of the Kennedy Space Center later that day.

NASA managers early today ordered engineers to begin preparations for rolling shuttle Atlantis off the launch pad and back to the protection of the Vehicle Assembly Building, eliminating any chance of launching the shuttle Tuesday.

While its movement over land will decrease Ernesto's strength, the current track likely will bring tropical storm-force winds to Florida's space coast by Wednesday morning and possible category one hurricane-force winds by Wednesday night. Here is the National Hurricane Center five-day forecast.

NASA managers met this morning at 7 a.m. to discuss the storm and quickly decided to begin preparations to roll Atlantis off the launch pad, a move that would take 42 hours to complete. Rollback can be called off at any point between now and Tuesday afternoon if the storm changes strength or direction.

NASA's safety rules forbid moving the unprotected orbiter off the pad in winds higher than 40 knots. On Sunday, when the storm's track was well west of the space center, NASA managers expected 40-knot winds early Wednesday morning, giving them time to complete a rollback, if necessary, by Tuesday evening.

NASA managers considered ordering a rollback Sunday night but deferred a decision to today believing they had time before the onset of 40-knot winds. By deferring a decision, NASA kept open the possibility of launching Atlantis Tuesday on a space station assembly mission if Ernesto's track or strength dramatically changed. That option is now closed.

Atlantis' launch window closes Sept. 7, based on a desire to launch in daylight for photo documentation of the shuttle's heat shield and external tank and because of conflict with launch of a Russian Soyuz rocket carrying the space station's next crew.

While the shuttle can launch as late as Sept. 13 from a lighting standpoint, any launch past Sept. 7 would force the Russians to delay the Soyuz launch and, more important, delay the return to Earth of the station's outgoing crew. A shuttle launch on Sept. 7 would result in a pre-dawn landing for the returning Soyuz.

Every day past Sept. 7 would move the landing earlier in the day and Russian managers want to avoid a dead-of-night touchdown because the recovery team will be conducting its first operation under new civilian management.

A rollback likely would use up NASA's available launch window, barring a concession form the Russians to delay the Soyuz launch. Even if Ernesto passes without causing major damage, it would take NASA at least eight days to ready the ship for flight after rolling back out to pad 39B.

If Atlantis remains at the launch pad, either because of high winds preventing a rollback or because the storm changes strength or direction, NASA managers believe it's unlikely any launch attempts could be made before Sunday at the earliest.

Space station program manager Mike Suffredini planned to open discussions with the Russians today about the possibility of a launch past Sept. 7, but it's not yet known whether that's a real possibility.

As for relaxing the lighted launch requirement to open up more opportunities after the Soyuz flight, Bill Gerstenmaier, chief of spaceflight for NASA, said Sunday the agency considers photo documentation of the shuttle's tank and heat shield a high priority.

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VIDEO: ANOTHER VIEW OF LIGHTNING STRIKE PLAY

VIDEO: PRE-LAUNCH NEWS CONFERENCE PLAY
VIDEO: FRIDAY'S COUNTDOWN STATUS DIAL-UP | BROADBAND
VIDEO: CREW ARRIVES FOR LAUNCH PLAY
VIDEO: THURSDAY'S COUNTDOWN STATUS DIAL-UP | BROADBAND

VIDEO: LAUNCH DATE ANNOUNCEMENT NEWS CONFERENCE PLAY
VIDEO: COMPLETE PREVIEW OF ATLANTIS MISSION PLAY
VIDEO: DETAILS OF THE THREE SPACEWALKS PLAY
VIDEO: MEET THE SIX ASTRONAUTS PLAY

VIDEO: CREW LAUNCH PAD PRESS CHAT DIAL-UP | BROADBAND
VIDEO: ATLANTIS ARRIVES AT LAUNCH PAD 39B PLAY
VIDEO: ROLLOUT FROM VEHICLE ASSEMBLY BUILDING BEGINS PLAY
VIDEO: TRUSS IN PAD'S PAYLOAD ROOM PLAY
VIDEO: PAYLOAD HOISTED INTO THE PAD PLAY
VIDEO: STATION TRUSS PAYLOAD DELIVERED TO PAD PLAY
MORE: STS-115 VIDEO COVERAGE
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STS-115 patch
The official crew patch for the STS-115 mission of space shuttle Atlantis to resume orbital construction of the International Space Station.
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