optionally manned

  1. RAP

    RN Experimental Ship XV Patrick Henry

    https://www.msn.com/en-us/news/world/royal-navy-christens-new-experimental-ship-the-xv-patrick-blackett/ar-AA1075di?ocid=msedgdhp&pc=U531&cvid=717285f21e704ffb8edc86108381c8a7
  2. Graham1973

    Manned/Unmanned Lunar Explorer (MULE)

    Over the years NASA has run various systems engineering courses with universities around the United States. In the mid-1970 a group associated with Rice University was asked to design a Dual-Mode rover for use in the 1980's. The selected design was for a two man, tracked rover. Manned/Unmanned...
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