I stumbled across this on my YouTube feed while "watching television" last night.
The Sunseeker Duo sports a wingspan of 23 meters (75 feet) and the propeller will be driven by a 20 kW direct drive motor, with power provided by 72 lithium-polymer batteries, wired in series. Those batteries are said to store enough power to allow 20 minutes of full-power climbing, and following this, the pilot may glide while they charge. When above the clouds, the Sunseeker Duo will have the capacity to cruise on direct solar power for hours.
www.solar-flight.com
That was s very cool although you'd have to have nerves of steel in turbulence. That wing would get a good wobble up!
