The unmanned Russian supply ship Progress 47 failed to re-dock at the International Space Station during a docking system test on July 23, 2012. Credit: NASA <\/p>\n
MOSCOW, July 25 (UPI) -- After an initial failure, another attempt to re-dock a Russian space freighter to the International Space Station will be made Sunday, officials said. <\/p>\n
The unmanned Progress M-15M space freighter that arrived at the ISS in April undocked from the station Monday to perform a series of engineering tests during a re-docking designed to verify an upgraded automated rendezvous system. <\/p>\n
After separation, the freighter moved about 100 miles from the station and held position for 24 hours before attempting a re-docking Tuesday that was unsuccessful due to an apparent failure in the new Kurs-NA rendezvous system, RIA Novosti reported. <\/p>\n
The failure of the system triggered a passive abort, a standard procedure that took Progress to a safe distance of about 1.8 miles below the space station. <\/p>\n
\"Another attempt to dock Progress with the space station is scheduled for 5 a.m. Moscow time (01:00 GMT) on July 29,\" a spokesman for the Russian Mission Control Center said. <\/p>\n
Should another attempt to re-dock the freighter using the modernized Kurs-NA system fail, the ISS crew can revert to using its time-proven predecessor, the Kurs system, a space industry source told RIA Novosti. <\/p>\n<\/p>\n
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Russia to attempt space-station re-docking<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" The unmanned Russian supply ship Progress 47 failed to re-dock at the International Space Station during a docking system test on July 23, 2012. Credit: NASA MOSCOW, July 25 (UPI) -- After an initial failure, another attempt to re-dock a Russian space freighter to the International Space Station will be made Sunday, officials said Continue reading