Science Memes

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Mythbusters (mander.xyz)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 3 points 4 months ago (2 children)

Plane on a treadmill is really interesting because if you understand how planes work its so obvious what will happen you don't need to test it. Planes move on the ground by running their engines, which push against the air, the wheels provide zero motive force. It's also why planes need tugs to move away from the gate, you can't run the engines in reverse. Planes are not cars, but people tend to assume the thing they don't understand works like the thing they do understand, and refuse to believe their hasty assumption is wrong even when told directly their hasty assumption is wrong.

[–] [email protected] 1 points 4 months ago

my criticism of PoaT actually has to do with the scale model they used to prove it.

scale aircraft have ridiculous power-to-weight ratios

but that's just me being a stickler.

[–] [email protected] 2 points 4 months ago

You actually can run the engines in reverse. They have thrust reversers. There's very good reasons that they do not reverse the plane from the stand using the engines, but it is possible.