high altitude UAV

The Defense Advanced Research Projects Agency (DARPA) and its industry partners are developing a UAV that can fly unattended for five years at a time. The Vulture program is intended to create an aircraft that can fill the role of satellites without being limited by orbital mechanics and rocket launch costs. Flying at 60,000 ft., Vulture would be designed to produce a continuous high-resolution image of a battlefield within a 750-mile-dia. view.