How Big Can A Solar-Powered Drone Be?
It's a brilliant idea. Put solar panels on a drone and it doesn't even need a battery. That's exactly what students made at the National University of Singapore. Without a battery, you could fly a drone like this as long as the sun keeps shining. It's awesome (assuming your motives are pure). But if you watch the video, you'll notice immediately that the drone is as thin as a sheet.