Human-Powered Helicopter: Straight Up Difficult

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.

July 17, 2013
Less than a minute
Human-Powered Helicopter: Straight Up Difficult
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.

July 17, 2013
Less than a minute

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