Its design approach is aimed at swapping the main rotor with rigid coaxial blades, shortening the tail, removing the tail rotor, and adding twin ducted fans for higher performance, and longer range.

Maybe it was the new tail design. Maybe it was skilled pilot. Maybe it was the twin rotor blades. Or maybe they all contributed to Sikorsky's X2 helicopter speeding past 249 miles per hour to become ...

Together, this is the dynamic advancement that its maker, Sikorsky, says enabled the Sikorsky X2 to recently break the world record for helicopter speed, hitting 250 knots per hour, which is about 280 ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The Defiant X is a sleek, futuristic helicopter that’s designed to ...