Jul 1, 2009 | 1
Will the third time be a charm for space shuttle Endeavour? NASA successfully tested a troublesome gas-venting system this morning, green-lighting the twice-delayed launch of the shuttle to the International Space Station.
The space agency filled the shuttle's external fuel tank with liquid hydrogen and liquid oxygen and found that the vent system, which carries excess hydrogen gas away from the launch pad, was no longer leaking near the shuttle.
Hydrogen leaks at the Ground Umbilical Carrier Plate, which connects the vent line to the shuttle's tanks, were detected in advance of planned launches on June 13 and June 17. Endeavour is now scheduled for a July 11 launch.
Jun 30, 2009
NASA will refill space shuttle Endeavour's external fuel tank tomorrow morning to test whether the leak that twice scrubbed the orbiter's launch earlier this month has been properly repaired.
The refueling is scheduled to commence at 7:00 A.M. (Eastern Daylight Time), and Florida Today reports that the tank will reach 98 percent capacity, the level at which leaks arose during launch preparations, between 9:00 and 9:15 A.M.
NASA passed on launch opportunities June 13 and June 17 after hydrogen leaks were discovered at the launch pad. The culprit was the Ground Umbilical Carrier Plate, which is where the external fuel tank connects to a venting system that allows excess hydrogen to be carried away from the orbiter.
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