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<!--BEGIN SPECIFICATIONS--> Helios Specifications Primary Function: Remotely piloted solar-powered airplane Contractor: AeroVironment Crew: None Unit Cost: N/A Powerplant 14 brushless direct-current electric motors, each rated at 2 hp. (1.5 kW), driving two-blade, wide-chord, 79-in. diameter laminar-flow propellers designed for high altitude. Dimensions Length: 12 ft Wingspan: 247 ft Height: N/A Weights Empty: 1,322 lb Maximum Takeoff: 2,048 lb Performance Speed: up to 170 mph ground speed at extreme altitude Ceiling: 100,000 ft., typical endurance mission at 50,000 to 70,000 ft Endurance: With solar power, limited to daylight hours plus up to five hours of flight after dark on storage batteries. When equipped with a supplemental electrical energy system for nighttime flight, from several days to several months. Armament N/A <!--END SPECIFICATIONS--> <!--BEGIN ACHIEVEMENTS--> Helios Achievements Reached a world-record altitude of 96,863 feet Sustained flight above 96,000 feet for more than 40 minutes during a test flight near Hawaii <!--END ACHIEVEMENTS--> <!--BEGIN FEATURES--> <!-- Helios Features --> <!--END FEATURES--> <!--BEGIN BACKGROUND--> <!-- Helios Background --> <!--END BACKGROUND-->
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