Human-powered helicopter

Updated: Feb 28, 2013 20:02 IST

University of Maryland engineering student, Colin Gore, performs a test flight in Baltimore in a one-man, human-powered helicopter that he and fellow students designed and built. (AP)
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University of Maryland engineering student, Colin Gore, performs a test flight in Baltimore in a one-man, human-powered helicopter that he and fellow students designed and built. (AP)

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