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67531Re: Interesting comment on 'Curiosity' on Mars [1 Attachment]

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  • John Rabson
    Aug 11, 2012
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      It puts me in mind of H Beam Piper's "Omnilignual".

      John Rabson F5VLF

      On 11 Aug 2012, at 04:48CEST, Bruce Tanner wrote:

       



      Mars Science Laboratory, Curiosity Rover vehicle tires have tread
      patterns that imprint the acronym JPL in Morse Code in the dusty soil of
      the Mars surface. The wheel tread pattern is made by square and
      rectangular holes in the wheels. When in motion riding around the sandy
      Gale Crater, this pattern is viewed by the driver using some of the 17
      cameras aboard this interplanetary SUV. It takes about 14 minutes for
      radio waves to travel from the red planet to earth, through the Mars
      Odyssey orbiter relay satellite using UHF. Since there is a more than a
      30 minute round trip delay between the driving commands and finding out
      the result of the measured moves, there is a need for the earth-bound
      drivers to maintain visual orientation and checks of distance
      traveled... this can be gauged by incremental count of the tread pattern
      repeats. Curiosity has 6 of these morse-coded wheels, and uses a
      rocker-bogie suspension, enabling it to climb obstacles. Who knows how
      many years these tread patterns will last on Mars? Perhaps when future
      Martian archaeologists study these strange fossil tread patterns a few
      hundred years from now, they will try to find someone studied in ancient
      radio lore to decode the meaning. (see attached photo)

      Terry L. Morris, KB8AMZ


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