High Bypass Turbofan (3 Spool, 4:1 ratio)
grabcad
A high bypass axial/centrifugal turbofan jet engine I made. Bypass ratio is roughly 4:1. Yes, it's a 3 spool design. I know that's not a realistic configuration. It's not perfect; no calculations were done for it, so everything was done just for looks at this point. I just revised the model a little bit by adding an exhaust mixer, improved centrifugal compressor, and thinner internals. Tutorial for the mixer is here: http://grabcad.com/questions/how-to-create-a-turbofan-exhaust-mixer-in-catia-v5
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