Sikorsky Aircraft Corp.’s X2 Technology demonstrator achieved a speed of 181 knots in a test flight May 25 at the Sikorsky Development Flight Center. The X2 Technology demonstrator combines an integrated suite of technologies including a counter-rotating coaxial main rotor, active vibration control system and fly-by-wire controls. Its mission is to demonstrate that a helicopter can cruise comfortably at 250 knots while retaining excellent low-speed handling, efficient hovering, and a ...


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