The prototype 10 engine battery-powered plane called Greased Lightning developed by NASA's Langley Research Center takes off like a helicopter during initial testing at Fort Hill May 1, 2015 in Richmond, Virginia.

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The prototype 10 engine battery-powered plane called Greased Lightning developed by NASA's Langley Research Center takes off like a helicopter during initial testing at Fort Hill May 1, 2015 in Richmond, Virginia.

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Size: 5150px × 3863px
Location: Richmond, Virginia
Photo credit: © NASA Photo / Alamy / Afripics
License: Licensed
Model Released: No

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