Helicopters can deliver military troops or rescue the wounded in tight spaces, but their rotating blade design also puts a hard limit on their speed and maneuverability. Now researchers have begun ...

The reappearance of the Chinese technology demonstrator underscores Beijing’s commitment to high-speed compound helicopters, following the same architectural approach explored by the United States.

A helicopter’s rotor design may allow for vertical takeoffs but that comes at a price—the backwards moving blade counteracts the helicopter’s forward momentum, causing it to stall at high speeds. But ...

A new rotorcraft design was presented by Airbus Helicopters at the Paris Air Show this week, and Airbus claims it can reach a cruising speed of 250 mph (400 km/h) without a deafening roar or trade-off ...

Many peoplehave never flown in a helicopter and consider them playthings of the rich. Butthese vertical-takeoff, vertical-landing aircraft impact our lives in many surprisingways. "Thepublic isn?t ...