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LOS ANGELES—Boeing has completed a five-year fatigue test of the 787 airframe, validating the basic strength of the predominantly composite primary structure and helping to define maintenance and inspections to cover the aircraft’s full projected-service lifetime.
The tests, which began in September 2010 on ZY998, the third 787 airframe built, simulated entire flights, from taxi through ascent, cruise and descent back to taxi and were aimed at creating a data set for the airframe’s durability. The tests subjected the structure to loads which simulated more than 160,000 cycles, or more than 3.6 times the design life of 44,000 flight cycles. “Test results were right in line with our expectations, with no significant findings,” says Bob Whittington, Boeing 787 vice president and chief project engineer. “We validated the robustness of the 787 design as well as our modeling, and the airplane performed so well that we extended the testing.”
originally posted by: TonyS
I've got serious reservations about the 787.