Giant Solar-Powered UAVs Are Atmospheric Satellites
The largest robot in the AUVSI expo hall last week belonged to Titan Aerospace. It was a model of their Solara 50 robotic atmospheric satellite, and they had to chop off the tail and most of the wings to get it to fit. The Solara is intended to lift a payload to 20,000 meters and then keep it there for five years, running entirely on solar power. It functions a bit like a satellite, except substantially cheaper and much more versatile. And, you can get it back when you're done.