747-Sized Drone Flies For Three Days On Solar Power Alone

747-Sized Drone Flies For Three Days On Solar Power Alone

Skydweller Aero's stated goal is to eventually achieve "perpetual" flight, in which the drone would only have to land once it needs maintenance.

MASSIVE Skydweller solar drone flies for days on end without recharging

With a 236-foot wingspan that's wider than a 747's, the battery and solar-powered Skydweller Aero drone is pushing the boundaries of aviation. And, after back-to-back three-day flights without recharging, it's pushing the boundaries of energy efficiency, too, begging the question: is perpetual aviation really here? more . . .