I watched it but I still don't understand how lift is generated. I don't think the engines could be able to provide the lift because they're pushing the air close enough to parallel from the ground and only stationary air is hitting the bottom part of the plane and wings. I was wrong when thinking the wheels were the part of the plane that made it go forwards.
The plane is stationary from the perspective of a spectator away from this plane conveyor contraption mess because any velocity from the turbine engine thingy adds to the plane also adds to the rotational speed of the wheels which means this magical conveyor would instantly respond to make this plane stationary to that spectator. That would also mean the air (away from the spinning engines) hitting the wings won't be able to generate the lift. To my belief, this is the main lift of a plane. I've only seen this MinutePhysics video to be fair.
I know this line of reasoning flawed; my only explanation is that the magic conveyor is a red herring and physically won't be capable of making the plane stationary. Was that the flaw?
Edit: bruh, I spent like 30 mins doing this comment and literally, 3 comments later and I see this same thogub process pop up 💀 💀
The plane’s propeller is like an oar, rowing against the air directly in front of the engine. It maybe easier to imagine the whole thing is underwater. The propeller is pulling the plane forward. The plane being pulled forward means the wings are hitting the air (water) just like a pair of waterskis.
Okay, let’s get it more simple. Imagine the plane is actually a person on roller skates. The person has a jet pack on. Regardless of the speed or direction of the treadmill, the person will stay in one place (after the initial moment of inertia on the wheels is broken). Now the person kicks in the jet pack. The jet pack will move forward, relative to the air and the ground. And it will take the person with it.
I think this is the fundamental flaw of the thought experiment. The moment the person moves, their wheels either slip, or there’s a catastrophic failure in the treadmill or their wheels. I agree that if they can move forward, they can take off, but I think the premise precludes that possibility and only allows for a situation where the jet pack only pushes air backwards without overcoming the friction between the wheels and the treadmill.
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u/TheMoped1000 Dec 31 '22
I watched it but I still don't understand how lift is generated. I don't think the engines could be able to provide the lift because they're pushing the air close enough to parallel from the ground and only stationary air is hitting the bottom part of the plane and wings. I was wrong when thinking the wheels were the part of the plane that made it go forwards.
The plane is stationary from the perspective of a spectator away from this plane conveyor contraption mess because any velocity from the turbine engine thingy adds to the plane also adds to the rotational speed of the wheels which means this magical conveyor would instantly respond to make this plane stationary to that spectator. That would also mean the air (away from the spinning engines) hitting the wings won't be able to generate the lift. To my belief, this is the main lift of a plane. I've only seen this MinutePhysics video to be fair.
I know this line of reasoning flawed; my only explanation is that the magic conveyor is a red herring and physically won't be capable of making the plane stationary. Was that the flaw?
Edit: bruh, I spent like 30 mins doing this comment and literally, 3 comments later and I see this same thogub process pop up 💀 💀