Students have achieved a 50 second human powered helicopter flight.
Gamera has a rotor at each of the four ends of its X-shaped frame, with the pilot’s module suspended at the middle. Each crossbar of the frame is 60 feet long, and each rotor is 42.6 feet in diameter. Yet, through the use of balsa, foam, mylar, carbon fiber and other lightweight materials, the entire vehicle weighs only 71 pounds. All power comes from a combination of hand and foot pedaling, transmitted through chains, gears, and lightweight string to the rotors.