Boeing's CH-47 Chinook has stood the test of time as a soldier and equipment transporter, and remains one of the fastest ...

At 37 meters long with a wingspan-like dual rotor design, the Mil V-12 set world records for lifting power. This video explores why the Soviet Union invested in this extraordinary project, the ...

It may look "nutty" and like a "blender," but the designers say the craft could challenge helicopters ...

Related: Mars helicopter flies back-to-back to prep for 'solar conjunction' (video) Over the course of three weeks, the dual rotors were spun at exponentially greater speeds to test their durability.

Eyewitness video showed the rotors and the body of the helicopter separating in midair. The phenomenon is unique to helicopters with semi-rigid rotors, like the Bell 206L4 LongRanger that fell out ...