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The multi-disciplinary optimization (MDO) was applied to design of a compressor impeller and was completed after replacing titanium with aluminium. A two-step optimization method was used. Loop 1 combined quasi-3D aerodynamic method and blade-alone FEA models, with reduced blade stress goals while matching blade loadings. Loop 2 used a 3D pie-slice FEA model with decreased bore stress goal. The redesigned...
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