The First Human-Powered Helicopter Wins 33-Year-Old Prize – Video

The First Human-Powered Helicopter Wins 33-Year-Old Prize – Video

The contraption has a 47-meter wingspan but weighs just 54 kilograms

World's Smallest Helicopter to Visit Its Original Designer's Homeland

World's Smallest Helicopter to Visit Its Original Designer's Homeland

GEN H-4 will be presented this month in Florence, Italy

Sikorsky Aircraft Adopts X2 Technology

Sikorsky Aircraft Adopts X2 Technology

First flight still to be scheduled