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         | APRIL 29  2008A 152.4 metre wingspan unmanned aerial vehicle is under design in the USA to stay aloft for up to 5 years
          cruising up to 27,432 metres gathering intelligence data and carrying out surveillance and communication missions without refuelling
 
 Named Odysseus it is made up from 3 units of "constituent aircraft" - each a complete self-sufficient flying machine with a wingspan of
          approximately 50 metres
 
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 |  Once in the air the 3 separate units are joined together - in the event of one section needing
          maintenance it will 'undock' and be replaced with a new module
 
 
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         | The position of the wings are
          adjustable in flight up to a 'Z' configuration allowing the maximum amount of solar energy to be collected from the sun during the day
          with storage batteries used for night flight
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