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Meanwhile, N502EA will be used to explore the top of the flight envelope in terms of flutter and speed. "We have already filled out most of the envelope, but this one will be used to perform VDIVE tests [115% of VNE – never exceed speed]," says Raburn. The dive speed is therefore expected to be around 315kt indicated airspeed, while maximum operating Mach number is set at 0.64.
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