4 Results for

human-powered helicopters


Human-powered helicopter finally takes Sikorsky Prize

For the first time since its introduction in 1980, the $250,000 Sikorsky Prize for a human-powered helicopter flight has actually been awarded.

By July 11, 2013


Human-powered helicopter gets off the ground

Engines are overrated. The Gamera human-powered helicopter managed its first flight with a record-setting attempt at the University of Maryland.

By May 17, 2011


NASA drops a helicopter on purpose, for science

NASA conducts a dramatic test of new helicopter safety equipment by dropping a fuselage full of dummies and capturing it all on video.

By August 29, 2013


A motorcycle that's fast, silent and green

Zero's electric bike takes some getting used to. The benefits? Forty miles on a single charge and no stopping at the pumps. Photos: Motorbikes go green

By August 2, 2007