bn:03524700n
Noun Named Entity
Categories: United States experimental aircraft 1990–1999, Flying wings, Eight-engined tractor aircraft, Unmanned aerial vehicles of the United States, AeroVironment aircraft
EN
AeroVironment Pathfinder  NASA Pathfinder  Helios  HALSOL  Helios Pathfinder
EN
The NASA Pathfinder and NASA Pathfinder Plus were the first two aircraft developed as part of an evolutionary series of solar- and fuel-cell-system-powered unmanned aerial vehicles. Wikipedia
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EN
The NASA Pathfinder and NASA Pathfinder Plus were the first two aircraft developed as part of an evolutionary series of solar- and fuel-cell-system-powered unmanned aerial vehicles. Wikipedia
High altitude, solar-powered unmanned aircraft Wikipedia Disambiguation