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One more reason for redundant spacecraft

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  • One more reason for redundant spacecraft

    The Progress is an unmanned cargo version of the Soyuz - akin to a cargo SpaceX Dragon (6 tons up-cargo/3 tons down-cargo) but much smaller in up-cargo capacity (2.5 tons) and with no down-cargo capability. Another reason for having more than one LEO spacecraft operational at a time.



    Unmanned capsule misses space station

    Progress 38 spacecraft is packed with nearly 2.5 tons of supplies


    An unmanned Russian cargo ship sailed past the International Space Station instead of docking on autopilot, as engineers on Earth struggle to determine what went wrong.

    A telemetry lock between the Russian-made Progress module and the space station was lost and the module flew past at a safe distance. NASA said the crew was never in danger and that the supplies are not critical and will not affect station operations.

    NASA said that it will not attempt another docking today. Russian flight controllers don't know yet what caused the failure in the unmanned modules automated docking system.

    The robotic cargo ship Progress 38 was slated to dock at the space station at 12:58 p.m. ET (1658 GMT) but lost its navigational lock on the orbiting lab about 25 minutes before the rendezvous.

    "The Progress literally flew past the station, but at a safe distance from the outpost," NASA commentator Rob Navias said. "The station crew reported seeing the Progress drift beyond their view, as they worked to reestablish telemetry with the spacecraft."
    >
    Last edited by Dr Mordrid; 2 July 2010, 13:24.
    Dr. Mordrid
    ----------------------------
    An elephant is a mouse built to government specifications.

    I carry a gun because I can't throw a rock 1,250 fps

  • #2
    They're gonna have another go on sunday.
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    • #3
      We'll see. There have been some interesting 'incidents' with Soyuz/Progress the last few years....
      Dr. Mordrid
      ----------------------------
      An elephant is a mouse built to government specifications.

      I carry a gun because I can't throw a rock 1,250 fps

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      • #4
        Apparently, the problem was caused by the TORU television system of the ISS...

        (sorry for the Dutch article, couldn't find an English one)
        pixar
        Dream as if you'll live forever. Live as if you'll die tomorrow. (James Dean)

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        • #5
          Saw that on the space sites. If anything this validates SpaceX's choice to use a multi-modal approach in their DragonEye system - LIDAR with IR, artificial vision s/w and telemetry. This was tested last year on a shuttle mission and worked impressively.

          Last edited by Dr Mordrid; 5 July 2010, 06:48.
          Dr. Mordrid
          ----------------------------
          An elephant is a mouse built to government specifications.

          I carry a gun because I can't throw a rock 1,250 fps

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          • #6
            I feel it shows also that it is a easy to jump to conclusions about soyuz/progress issues...
            That doesn't mean they shouldn't be replaced or some decent backup shoud be developed.
            pixar
            Dream as if you'll live forever. Live as if you'll die tomorrow. (James Dean)

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            • #7
              No need to jump to conclusions as quality control issues with Soyuz, and by extension Progress, in recent years are well known and caused NASA to do safety reviews.
              Dr. Mordrid
              ----------------------------
              An elephant is a mouse built to government specifications.

              I carry a gun because I can't throw a rock 1,250 fps

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