2 May 2014
United Technologies Corp. (NYSE: UTX) subsidiary Sikorsky Aircraft Corp. said it has begun full system testing of the US Marine Corps´ CH-53K heavy lift helicopter with all seven main rotor blades and four tail rotor blades attached for the first time to a non-flying prototype called the ground test vehicle (GTV).
Powered “light-off” with rotor blades spinning follows a “bare head” (without blades) test phase of the GTV aircraft´s systems powered by its three GE 7,500 horsepower class engines, and begins a rigorous two-year test program of the rotor blades, transmission, engines, and all subsystems while the GTV is anchored to the ground.
Sikorsky Aircraft Corp., based in Stratford, Conn., is a world leader in helicopter design, manufacture, and service. Its parent company, United Technologies Corp. (UTX), is based in Hartford, Conn., and provides a broad range of high technology products and support services to the aerospace and building systems industries.