There is a plenty of opportunities in the field of aeronautics for the scientists who used to work hard. The Defense Advanced Research Project Agency (DARPA) is looking to attain its most expected discovery. It is the unmanned mission for period of five years in the open sky with its adventurous aircraft VULTURE. Scientists looking for the analysis of the particular area came out with this drastic idea. Moreover it is designed to carry a payload of 1000 pounds (450 kg). This discovery has certain drawbacks too, because way to supply power is a tedious process during five year mission.