History
The Zephyr holds the official endurance record for an unmanned aerial vehicle for its flight from 9 July to 23 July 2010, lasting 336 hours and 22 minutes (2 weeks / 14 days). Record claims have been verified by the Fédération Aéronautique Internationale (FAI) for both duration and altitude, at 21,562 meters. It more than doubled the previous endurance record for unmanned flight.
In a 2008 demonstration for the US military, a smaller-scale version of the Zephyr performed beyond the official world record for the longest-duration unmanned flight, however its 82-hour flight at an altitude of 61,000 feet did not set an official record because FAI officials were not involved in the flight.
Read more about this topic: Qinetiq Zephyr
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