NASA GL-10 Greased Lightning unmanned aircraft powered by ten electric motor driven propellers.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...g_fullsize.jpg
Previously:
Antonov An-2MS nine-engine biplane - video and photo
Volocopter 2X multirotor electric helicopter - GIF
Jetson ONE personal electric aerial vehicle - GIF
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