Crack found in Discovery external tank insulation
Published: Mon Jul 3rd, 2006Source: www.spaceflightnow.com
Engineers inspecting the shuttle Discovery's external tank following Sunday's launch scrub found a crack in the tank's foam insulation near a bracket holding a 17-inch oxygen feed line in place. Some engineers believe the crack must be repaired but senior managers say a variety of options are on the table, from fly as is to making repairs.
As of this writing, no decisions have been made about how to proceed and it's not known what impact the work might have on plans to make a third attempt to launch Discovery Tuesday.
Engineers also found a small piece of foam insulation resting on the surface of Discovery's mobile launch platform that may be associated with the crack. The crack is located near a bracket toward the top of the hydrogen section of the external tank that holds the liquid oxygen feedline in place. It is not yet known what might have caused the crack, although extreme temperature differences because of the presence of super-cold propellants could have played a role.
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