Human powered helicopter

"On June 13th, 2013, the AeroVelo's Atlas Human-Powered Helicopter captured the long standing AHS Sikorsky Prize with a flight lasting 64.1 seconds and reaching an altitude of 3.3 metres. The

competition was initially opened in 1980, and over the course of the 33 years that followed, dozens of teams from around the world pushed the limits of existing technology in pursuit of this once-thought-to-be impossible goal."