Tag: MDM

  • Astronauts replace failed computer in short spacewalk

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    STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION Astronaut Jack Fischer waves to a camera during Tuesday’s spacewalk. Credit: NASA TV/Spaceflight Now After a bit of a struggle with a balky bolt, space station commander Peggy Whitson replaced a failed external computer during a short, hurriedly planned spacewalk Tuesday while crewmate Jack Fischer installed a pair…

  • Hurriedly planned ‘contingency’ spacewalk on tap Tuesday

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    STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION Space station commander Peggy Whitson and astronaut Jack Fischer are set for a two-and-a-half hour spacewalk Tuesday, a quickly-planned excursion to replace a recently installed external computer that failed Saturday. The 50-pound data relay box, known as a multiplexer-demultiplexer, or MDM, is one of two “tier 2” command…