Zephyr - The Solar Champion By Sarah Gingichashvili
During the 54 hour test flight, the Zephyr UAV, built by a team from the UK defense contractor Qinetiq, reached a maximum altitude of more than 18000m. The previous record in the longest duration unmanned flight category was set in 2001 ...TFOT - The Future Of Things - http://www.tfot.info

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