two young Canadian aerospace engineers push the boundaries of what 's possible . The pair built a human-powered helicopter that claimed an elusive $ 250,000 prize . They also designed perhaps the first flapping-wing aircraft to sustain flight . ` We really want people to understand that impossible is nothing , '' he added . The Two spoke in September at the the American Helicopter Society conference in Maine , Maine .
two young Canadian aerospace engineers push the boundaries of what 's possible . The pair built a human-powered helicopter that claimed an elusive $ 250,000 prize . They also designed perhaps the first flapping-wing aircraft to sustain flight . The Two spoke in September at the the American Helicopter Society conference in Maine , Maine .