The chances of space shuttle Discovery launching on the STS-133 mission in 2010 could be in jeopardy. Cracked foam on the shuttle’s external tank was removed early Wednesday morning and underneath engineers found a structural crack on the tank itself. The serpentine crack is about 22 cm (9 inches) long and is located on a structural rib or “stringer.” Cracks like this have appeared on other tanks and were fixed at the production facility in New Orleans. But this type of repair has never been attempted at the launch pad.
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External Tank for Final Scheduled Shuttle Mission Arrives at KSC (Gallery)
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Universe Today photographer Alan Walters was on hand at Kennedy Space Center today to see the arrival of ET-138, the external tank for the final scheduled space shuttle mission, STS-134. Enjoy this gallery of images, (because it is something that might only happen one more time…). There was also a surprise drive-by of some segments of used shuttle solid rocket boosters.