The DEFIANT chopper has been created as part of the U.S. Army’s Future Vertical Lift program, intended to develop a new utility helicopter that will enter service in the 2030s. Under that mandate, the DEFIANT has been built around Sikorsky’s X2 technology,which features twin coaxial rotors and a rear propeller.
According to Dan Spoor, VP of Sikorsky Future Vertical Lift, “DEFIANT is designed to fly at nearly twice the speed and has twice the range of conventional helicopters while retaining the very best, if not better low-speed and hover performance of conventional helicopters."
To make this leap in ability, the DEFIANT’s two coaxial rotors spin in opposite directions, counteracting the flaws in previous chopper designs that led to the generation of uneven lift forces while travelling at high speed.
Aside from allowing the DEFIANT the ability to rapidly deploy behind enemy lines, the helicopter’s twin rotor configuration will make the craft more maneuverable and less likely to be damaged by nearby enemy force.
"This design provides for exceptional performance in the objective area, where potential enemy activity places a premium on maneuverability, survivability and flexibility,” said Spoor. “We are thrilled with the results of today's flight and look forward to an exciting flight test program."