Composite Technology Inc., a Sikorsky Aerospace Services company based at Dallas Fort Worth International Airport, opened one of the world's most powerful structures to dynamically balance helicopter main rotor blades. Designed by Sikorsky to test main rotor blades that rotate either clockwise or counterclockwise, the bi-directional whirl tower will enable helicopter operators and manufacturers to rebalance their rotor blades in the U.S. regardless of the rotorcraft's country of origin. ...


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