Greg Morris, head of additive manufacturing strategy for GE Aviation, likes to talk about his Angel Trumpet engine. This tiny gas turbine will never power an aircraft, but previews how 3D printing could be applied throughout a future full-size commercial turbofan. Begun by additive-manufacturing (AM) pioneer Morris Technologies to showcase the power of the technology, the project was continued by GE after it acquired the rapid-prototyping company in November 2012—the coffee-can-sized ...

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