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Transportation Technology

GE Is 3D Printing a Working Jet Engine 72

lurking_giant writes: GE Aviation's Additive Development Center near Cincinnati has produced a number of firsts but they are now demonstrating a working 3D-printed jet engine, (OK, it's sized for an RC model). The engine turns at 33,000 RPM and is made from all 3D metal printed parts. They used the same EOS M270 3D printer that they use to produce the first and only FAA flight approved hardware, a T25 Pres and temp sensor for use in GE90 jumbo jet engines.
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GE Is 3D Printing a Working Jet Engine

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  • Please select one or more objects to 3D print:
    [_] Airplane
    [_] Howitzer
    [_] Missile
    [_] Nuke

  • by Anonymous Coward

    You guys know that normal RC jet engine go all the way to 100-200K rpm right? 33000 isn't even idle.

    Other fun facts:
    Stress goes up with rpm squared
    Most of the thrust is generated at 80-100% rpm
    This thing is teh sux

    • Yep, "it idles" woohoo!

      Not only that but the parts I saw being modeled and printed were low-stress components such as the stand (wow!) and the exhaust tube.

      Were the compressor and turbine wheels printed? Those are the crucial parts and the ones exposed to maximum stress.

      A great proof of concept but they tell us that this was made using materials "not available to the hobby industry" so why does it perform so poorly, especially since they claim to have enhanced the design.

      I smell marketing department hype he

  • that is the question. I mean, at least the mechanical parts, of course it cannot print electronics.
  • about this technology, and he mentioned that this process allows combustor [wikipedia.org] shapes not possible through traditional manufacturing methods. This means new opportunities for jet engine performance and emissions.

    This is the same technology used by SpaceX [space.com] on their engines.

There's no sense in being precise when you don't even know what you're talking about. -- John von Neumann

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