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Shuttle Discovery launch delayed
www.chinanews.cn 2005-07-14 08:56:47
(Agencies)
July 13 - A faulty fuel gauge on Discovery's external tank has forced
NASA to call off Wednesday's launch of the first shuttle flight since the
Columbia disaster 2 1/2 years ago. The space agency did not immediately
set a new launch date.
The decision came with less than 2 1/2 hours left in the countdown, as
the seven astronauts were almost done boarding the spacecraft. Up until
then, rain and thunder over the launch site appeared to be the only
obstacle to an on-time liftoff.
As astronaut commentator in launch control said that it was unlikely the
problem could be solved quickly and that another launch attempt on
Thursday was all but impossible.
The problem was with one of the four engine cut-off sensors, which are
responsible for making sure the spacecraft's engines shut down at the
proper point during the ascent. NASA said it appeared that the sensor was
showing a low fuel level, even though the tank was full.
If the engines were to continue running at high speed without fuel, it
could lead to a catastrophe.
Shuttle managers considered conducting a fueling test at the launch pad
on the replacement tank, but ruled it out to save time, saying that the
actual fueling on launch day would be the ultimate test.
��NASA sets July 13 for shuttle launch (2005-07-01)
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