Marine Corps' CH-53K in new phase of testing
Stratford, Conn. (UPI) May 1, 2013 - Full system testing of the CH-53K heavy-lift helicopter being developed for the U.S. Marine Corps has begun, Sikorsky Aircraft said Thursday. The testing involves a non-flying prototype with all seven main rotor blades and four tail rotor blades attached and spinning, the start of a two-year test program of the rotor blades, transmission, engines, and all sub-systems on the ground test ... more
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