The Vulture Project an unmanned spy plane that stays afloat for 5 years.
...Vulture programme to demonstrate an unmanned aircraft capable of staying aloft for five years. "Aviation has a perfect record - we've never left one up there. We will attempt to break that record." DARPA has set the goals for Vulture as five years on station with a 450kg (1,000lb) payload, 5kW of onboard power and sufficient loiter speed to...
