• Hobbes_Dent@lemmy.world
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    3 months ago

    When a plane loses power this lowers into the airstream to make brrrrrrrrrr sounds to keep the illusion of engines.

    Edit: I feel I should expand on this. Like a hockey card in your bmx spokes.

  • neidu2@feddit.nlM
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    3 months ago

    It’s how the male plane shows that it’s looking for an airbus(ty) female mate.

      • mozz@mbin.grits.dev
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        3 months ago

        I tried to find a Scary Go Round archive with the whole subplot of the communist robots having a party at the bus station and fucking the buses, but it is too old to be available, I think 😢

    • werefreeatlast@lemmy.world
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      3 months ago

      Instead of 257mph, they lower this one to go 257.5mph. it makes a big difference. I see your confusion on this topic. Sometimes they lower its big brother windmill and then the plane cat reach speeds closer to Mac book 7pro.

    • gjoel@programming.dev
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      3 months ago

      You’re the closest to the truth. It’s actually a booster propeller for when the plane needs to go super sonic.

  • tal@lemmy.today
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    3 months ago

    When an aircraft loses engine power, this automatically pops out. As in this scenario, not all instruments are powered and one has only one shot at landing, this is to assist in the expected imminent landing; it operates something like a curb feeler on a car. When you hear the propeller impacting the runway, you know that you’re probably too low.

  • t�m@lemmy.ml
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    3 months ago

    Should’ve added the NSFW tag on this, I was on an air field and every airplane in the area had there’s pop out…. Lots of fluids everywhere.

  • tobogganablaze@lemmus.org
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    3 months ago

    It’s a tactical windmill that can be deloyed to cause cancer in the overflown area. And kill birds drones.

  • ShortFuse@lemmy.world
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    3 months ago

    This actually propels the plane.

    The turbine engines are there to look big and make noise to have the passengers feel safe. Big turbines also allow airlines to charge extra, and generate bigger profits. CO2 emissions are also intentionally raised to justify higher pricing.

    • sugar_in_your_tea@sh.itjust.works
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      3 months ago

      Well yeah, the government needs that “emissions tax” and the airlines can now compete over “efficiency.” But honestly, they don’t need any fuel at all because they have wind. Cars need fuel because of friction with the ground, airplanes don’t.

      That propeller is only needed for takeoff and landing to make sure the plane gets consistent speed. Wind can be a bit gusty, and passengers don’t like being tossed around.

    • hemko@lemmy.dbzer0.com
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      3 months ago

      It is only also used on lift-off and landing, to accelerate and decelerate the plane. During the flight it’s not needed due to the plane relying on Newton’s 1st law of motion: “when it go it no stop til stopped”