Unmanned Aerial Vehicle (UAV)

The Defense Advanced Research Projects Agency (DARPA) is to sign a contract on building an UAV which should have an enormous endurance capability of about 5 years. The project is entitled "Vulture" and a September 15, 2010 news release indicated DARPA’s Vulture Program Enters Phase II. The developers are certain neither on the design of the UAV nor on what fuel it should run to be able to stay in air without any maintenance for such a long period of time.
• Notable high endurance flights
UAV - Flight time - Date
QinetiQ Zephyr Solar Electric - 336 hours 22 minutes - 9–23 July 2010