First 100km task flown autonomously (and all below 4000ft) A commercial off-the-shelf RnR Products SBXC sailplane was outfitted as a UAV and performed more than 100 test flights of the ALOFT algorithm, with a nominal endurance of 3 min after a winchlaunch to approximately 100 m altitude. A notable success was unofficially breaking the cross-country soaring goal-and-return world record by flying 97.2 km (60.4 mi) declared distance over approximately 4.55 hr. Best endurance demonstrated by the algorithm was 5.3 hr and best range demonstrated by the algorithm was 113.4 km (70.47 mi) open distance. There was no motor on the ALOFT sailplane for any of these flights, so all the endurance and range performance clearly came from flying in thermals
http://www.dtic.mil/get-tr-doc/pdf?AD=ADA614555
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