Check out the double-rotor helicopter that could be the US Army’s next Black Hawk
The Defiant X employs two coaxial rotors up top, with a propeller in the back to help it accelerate and decelerate. (Sikorsky/Boeing/) The Defiant X is a sleek, futuristic helicopter that’s designed to go fast and far. While it doesn’t exist as a production aircraft, it’s one of two candidates that could be the new […]
