As far as jet engines go they have really grown in size, especially from aircraft manufactures not wanting more than 2 on the plane. I was wondering about how size affects a turbo fan engine? Since the speeds that the turbines and compressors run at would generate huge centrifugal loads, and since more mass needs to be added to such things as the wheels the blades are mounted on, at what point is the limit of material strength reached do to size? Lately there have been some engine failures that are considered extremely rare, and is why I thought of this.
I would say these sort of failures are analogous to rod failures due to over speed and high reciprocating weight in piston engines.
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