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The D-segment is the 4th category of the European segments for passenger cars, and is described as "large cars". [1] [2]It is equivalent to the Euro NCAP "large family car" size class, [3] and the present-day definition of the mid-size car category used in North America.
Only one engine failed among over 100 showing small cracks, one-third of the suspect population of 366 engines, as crack develops slowly. On the ground at Derby, an instrumented Trent 1000 with cracked rotors ran 10 h at maximum continuous power with no crack propagation , and was then mounted to Rolls' 747 testbed aircraft in mid-September to ...