Comment on genius

• Fedegenerate@lemmynsfw.com ⁨4⁩ ⁨days⁩ ago

  Those orphans aren’t orphans any more… Progress.

  Real talk I cast turbine blades for IGT and Aerospace (not an engineer, just a floor worker). It was my impression that inside those turbines is an incredibly hostile environment, and still we cast them. We did some single crystal stuff for the really demanding parts. Is cast metal really that flawed?

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  • bizarroland@lemmy.world ⁨4⁩ ⁨days⁩ ago

    Out of all of the things that you would want to be comfortable with taking risks on, the Jesus Nut on a helicopter is not one of them.

    There are no fallbacks if that fails.

    The only thing that can save you is a miracle from our Lord and Savior, Jesus Christ, if the Jesus Nut fails on your helicopter while you’re in air.

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  • Warl0k3@lemmy.world ⁨4⁩ ⁨days⁩ ago

    No, but metallurgy isn’t a straightforward peocess like they were kinda implying. Gears, especially extremely high performance ones like in aerospace, have partial hardening, surface treatments, even exotic things like mixed alloys to ensure they meet the mechanical demands required of them. You can’t simply cast a gear and expect it to work - in this case if you tried as they were describing you’d likely just have the teeth shear when you tried to take off and you’d be fine, but there’s a real good reason that part costs as much as it does and it’s not just the administrative costs that come with aviation part documentation requirements.

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    • Fedegenerate@lemmynsfw.com ⁨4⁩ ⁨days⁩ ago

      It was me kinda implying it. Just making a shit posting comment in a shit post community.

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      • Warl0k3@lemmy.world ⁨3⁩ ⁨days⁩ ago

        Oh lol, mixed up you and bizarroland.

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    • mkwt@lemmy.world ⁨3⁩ ⁨days⁩ ago

      In some past aerospace work, I’ve seen requirements where, if you do use cast parts, you have to cast extra parts on each lot to use for destructive testing. Specifically to inspect the cross sections for flows or grains or whatever they want to look at.

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  • EchoCranium@lemmy.zip ⁨3⁩ ⁨days⁩ ago

    Back maybe 25 years ago I got to tour inside Howmet in Muskegon, MI as part of a class. They did casting of turbine vanes for jet engines. Damned impressive process, and thorough quality checks x-raying every one for flaws. Finding out that each vane has coolant channels cast in was interesting, and a bit unnerving, since they get operated at temperatures above the melting point of the metal! I always think about that when I get on a plane.

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  • bizarroland@lemmy.world ⁨3⁩ ⁨days⁩ ago

    Dead orphans are still orphans.

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• SpruceBringsteen@lemmy.world ⁨4⁩ ⁨days⁩ ago

  Just get one of those million dollar printers

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  • Axolotl_cpp@feddit.it ⁨3⁩ ⁨days⁩ ago

    Dissect a mosquito and use its proboscis

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    • brbposting@sh.itjust.works ⁨3⁩ ⁨days⁩ ago

      LOL

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• TropicalDingdong@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Discover that 3d printing can’t meet the precision requirements and cast metal won’t meet the mechnaical requirements, gear shears, make peace with your fate, fall from sky onto local orphanage’s annual puppy adoption drive.

  Bold assumption to make that a home-jobber would get you up into the sky.

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  • bizarroland@lemmy.world ⁨3⁩ ⁨days⁩ ago

    I bet that if you were dedicated enough, you could probably make a home helicopter.

    Whether you could survive the first or the tenth flight, that’s a different story, but I bet you could get into the air with something that was homemade.

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    • Warl0k3@lemmy.world ⁨3⁩ ⁨days⁩ ago

      Sure, there’s tons of plans out there for DIY helicopters you can get from the hobby aviation community. Usually the sticking point is making the rotor blades themselves, but I’ve seen some people get off the ground with carbon-fibre laminate blades. Not sure I’d trust them personally but it does work.

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• bitjunkie@lemmy.world ⁨3⁩ ⁨days⁩ ago

  More interesting than working until I have a heart attack

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