Wait aren’t all airplane wings bid inspired?

  • ExLisper@lemmy.curiana.net
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    6 days ago

    If you listen to the actual talk the bird they are talking about is an albatross and they are simply saying that to improve efficiency you need to make the wings longer and slimmer but then the plane will not fit in current aiport gates so they are working on folding wings.

  • AnyOldName3@lemmy.world
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    7 days ago

    How many blades do you have to add to a turboprop before it’s promoted to an open turbofan and touted as a major new innovation?

    • dogslayeggs@lemmy.world
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      7 days ago

      Based on my image search engineering, the answer to your question is 2.

      Based on my one semester of air breathing propulsion that I took 25 years ago, I’m guessing there is more going on inside the turbine part of the engine that both allows sustainable fuels that current turbofans can’t and also allows compression ratios at lower fan speeds that allows an open fan with fewer blades. Again, I barely passed air breathing propulsion back then and haven’t used ANY of that knowledge since, so I’m mostly talking out of my ass.

  • Ilovethebomb@lemm.ee
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    7 days ago

    Airbus explained that it ran the numbers and found that, while it could build a successful hydrogen airliner, the plane would be successful in the same way that Concorde was successful. In other words, a technological triumph, but a commercial failure.

    Just like any other hydrogen powered… Anything.

    • Echo Dot@feddit.uk
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      7 days ago

      It’s because hydrogen is a terrible fuel. In theory it could work, but there were so many practical problems with compressing the hydrogen into storage tanks and then keeping it in those storage tanks but the amount of effort you have to go through to make it work completely negates any performance benefits.

      • acosmichippo@lemmy.world
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        6 days ago

        also most hydrogen now is not green at all, the production of it uses methane and releases CO2. only a small percent of hydrogen is truly green, and very expensive.

      • scarabic@lemmy.world
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        6 days ago

        But its only exhaust is PuRe wATeR!! /s

        It still makes me LOL to see people tout this, when battery EVs don’t exhaust anything.

          • Echo Dot@feddit.uk
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            6 days ago

            They are without significant improvements in battery technology. Lithium Ion simply doesn’t have the energy density to be able to lift its own weight.

  • AItoothbrush@lemmy.zip
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    7 days ago

    I guess this is why so many boeing airplanes have been falling out the sky nowadays. They forgot and accidentally based their aiplanes on land dwelling vetrebrates.