Phantom Eye is a liquid hydrogen-fueled, high-altitude and long-endurance unmanned aircraft system for persistent intelligence, surveillance and reconnaissance and communications missions. The demonstrator aircraft is capable of maintaining its altitude for up to four days while carrying a 450-pound payload. Typical payloads include multiple sensor packages for monitoring, tracking and communications. A full size Phantom Eye variant is designed to stay aloft for up to ten days and carry a payload of 2,000 pounds. Phantom Eye Quick Facts The Phantom Eye began as internally-funded, but the Missile Defense Agency assisted the program with a $6.8 million contract. This advanced unmanned aerial system is a natural evolution of Boeing’s earlier success with the piston-powered Condor. The Condor set several records for altitude and endurance in the late 1980s. Technical Specifications Wingspan 150 ft (46 m) Takeoff Gross Weight 9,800 lbs (4,445 kg) Cruise Speed 150 kts Maximum Speed 200 kts Altitude 65,000 ft Engines (2) 2.3L 150 hp Endurance 4 days at 65,000 ft (19,800 m)