Small US aerospace project Helios Horizon claims to have recently broken the record for the highest-flying multi-seat electric aircraft, which it considers a step on its journey into the stratosphere.
Next test flights in converted Pipistrel Taurus light aircraft will target altitudes above 40,000 feet Helios Horizon has converted Pipistrel Taurus aircraft to fly ...
Chasing the sun : Helio progenitors -- Dawn of the "tennis court airplane" : early Helio prototypes -- Geared for success : main production models and variants, 1954-1974 -- Litterbugs and black ops : ...
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