![A Human-Powered Helicopter [Video]](https://i0.wp.com/www.geeksaresexy.net/wp-content/uploads/2012/10/heli.jpg?fit=280%2C282&ssl=1)
Students from the University of Maryland are trying to build a human-powered helicopter that can hover at least a minute, reach a height of 3 meters (10 feet), and stay within a 10-meter distance from its liftoff point, all this in order to win the $250,000 Sikorsky Prize.
It’s difficult to build a working four-rotor helicopter that spans 100 feet and only weighs 80 pounds. It’s even harder when your engine is a 0.7-horsepower person. But one team of engineering students is trying to do just that.
[NPR]
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