Comment on Anon isn't fooled by planes

leftzero@lemmynsfw.com ⁨2⁩ ⁨months⁩ ago

• redhorsejacket@lemmy.world ⁨2⁩ ⁨months⁩ ago

  When you nut, but Bernoulli keep sucking…

  “goofy plane”

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  • mojofrododojo@lemmy.world ⁨2⁩ ⁨months⁩ ago

    I’m 100% convinced this was never a battle of airframes and manufacturers and simply was down to: “No, sir/ma’am, I will not fly the derpy plane into combat. Can’t do it. YOU DON’T UNDERSTAND THE REST OF THE PILOTS WILL LAUGH AT ME”

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• Salamand@lemmy.today ⁨2⁩ ⁨months⁩ ago

  But then how can they fly upside down?

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  • leftzero@lemmynsfw.com ⁨2⁩ ⁨months⁩ ago

    Flaps. (As in, the hinged bits at the back edge of the wings, that essentially change the shape of the wing as required, not by flapping the wings; that’d be an ornithopter, as in Dune, not a plane.)

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    • Salamand@lemmy.today ⁨2⁩ ⁨months⁩ ago

      But… right-side-up, the plane fights gravity, has upward lift, according to Bernoulli principle. And even if we angle the flaps to decrease altitude, it’s still not dropping like a rock, the wings still generate lots of upward lift.

      400 ton plane, wings w 400 ton lift = flight

      Now (before engaging flaps) those same wings upside down would be generating downward “lift” PLUS pull of gravity. So now the 400 ton plane is like an 800 ton plane. Can the flaps alone lift that? Or, said another way, if we gave the plane flat wings, no Bernoulli, and stacked another plane on top of it (to make 800 tons), could it fly right-side-up just using flaps?

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      • ExtraPartsLeft@lemmy.world ⁨2⁩ ⁨months⁩ ago

        I’m not a geologist, but I think the planes that typically fly upside down, are significantly lighter than 400 tons.

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  • Psythik@lemm.ee ⁨2⁩ ⁨months⁩ ago

    Because air doesn’t give a fuck about gravity

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  • Rin@lemm.ee ⁨2⁩ ⁨months⁩ ago

    A fighter jet is basically a fancy dart, and darts dgaf about gravity

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• thespcicifcocean@lemmy.world ⁨2⁩ ⁨months⁩ ago

  Actually, I studied aviation in university. It’s literally just magic.

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• Rivalarrival@lemmy.today ⁨1⁩ ⁨month⁩ ago

  The absolute maximum that Bernoulli can suck is 14.7PSI at sea level. Not even your mother can generate a greater vacuum.

  There is no fundamental limit to the pressure that can be generated under the wing.

  With sufficient thrust and proper angle of attack, a brick can produce sufficient pressure underneath it to generate lift.

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  • leftzero@lemmynsfw.com ⁨1⁩ ⁨month⁩ ago

    Fair enough, yet unless I’m mistaken most planes don’t rely on people throwing bricks at them (which would be quite risky anyway, for unless they throw them faster than escape velocity they’re bound to come back down eventually).

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