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Sikorsky's X2 Technology high-speed helicopter demonstrator has reached 181kt on its way to the target of cruising at 250kt. The coaxial-rotor helicopter has been cleaned up for the high-speed runs, with rotor-hub fairings and retractable landing gear.Photo: SikorskySikorsky says tests at its West Palm Beach, Florida, development flight center have revealed no show-stoppers. The 181kt mark, faster than most conventional helicopters can cruise comfortably, completes the third phase of flight tests. The fourth phase will take the X2 to 250kt.Sikorsky has already proposed a light tactical helicopter using the X2's technology suite to meet the U.S. Army's Armed Aerial Scout requirement to replace the OH-58D Kiowa Warrior. The company says it could develop the all-new helicopter by 2018.
ar99, Sikorsky, rotorcraft
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