Technicians at NASA Kennedy Space Center’s Launch Pad 39A in Florida continue testing various systems inside space shuttle Endeavour associated with a newly installed power distribution box, called a Load Control Assembly 2 (LCA-2). So far, all systems have checked out. Overnight, teams will retest power for Endeavour’s reaction control system.
Endeavour’s no earlier than launch date remains May 10, but senior NASA managers will meet Friday to evaluate the progress of repairs and select a new launch date for the STS-134 mission to the International Space Station.
Engineers have been doing forensic engineering testing on the failed LCA-2, which was removed from Endeavour on Tuesday. The LCA-2 feeds power to a variety of systems, including heaters on the fuel line for Endeavour’s auxiliary power unit-1 (APU-1). APUs control the shuttle’s hydraulic system. Teams are trying to determine what caused a circuit inside the power box to short out.
The APU-1 fuel line heaters did not work on April 29, prompting the launch team to scrub Endeavour’s first launch attempt.
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I learnt more about Nasa Space.I like to wish all success and they will launch more in future
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