Video from NPR
“The American Helicopter Society (AHS) has promised $250,000 to the team that can build a human-powered helicopter. All it has to do is hover for a minute, reach a height of 3 meters (about 10 feet), and stay in a 10-meter box”
Video from NPR
“The American Helicopter Society (AHS) has promised $250,000 to the team that can build a human-powered helicopter. All it has to do is hover for a minute, reach a height of 3 meters (about 10 feet), and stay in a 10-meter box”