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Does a plane achieve lift by pushing a wing through the air or by pulling air over a wing?
Posted on 4/11/24 at 8:12 am
Posted on 4/11/24 at 8:12 am
That's the question that needs to be answered on the conveyor belt conundrum.
If the engines can PULL enough wind over the wings surface it will achieve lift even without the plane appearing to move forward to a bystander viewing.
If the engines can PULL enough wind over the wings surface it will achieve lift even without the plane appearing to move forward to a bystander viewing.
13
Posted on 4/11/24 at 8:13 am to sidewalkside
a missile is a wingless plane.
Posted on 4/11/24 at 8:14 am to sidewalkside
So what a few dozen shop vacs mounted on the wing to pull air over the top? Sounds about right.
Posted on 4/11/24 at 8:15 am to sidewalkside
You can’t pull a fluid
Posted on 4/11/24 at 8:15 am to sidewalkside
Planes generate enough force through their engines/propellers that it causes the plane to move forward. The act of moving the aero foil through the air results in lower pressure on top of the wing, resulting in lift.
Posted on 4/11/24 at 8:16 am to sidewalkside
You get anything with wings going fast enough, it will lift off the ground
The speed of the object wanting fly and the surface area of resistance is pretty much it.
Once it’s in the air, that’s a whole other ballgame
The speed of the object wanting fly and the surface area of resistance is pretty much it.
Once it’s in the air, that’s a whole other ballgame
Posted on 4/11/24 at 8:16 am to sidewalkside
quote:
That's the question that needs to be answered on the conveyor belt conundrum.
No it doesn’t
quote:
If the engines can PULL enough wind over the wings surface it will achieve lift even without the plane appearing to move forward to a bystander viewing.
They can’t. The closest thing is a bush plane taking off into a headwind.
None of that matters because the plane will still accelerate forward due to the thrust of its engines. Equal and opposite reaction.
Posted on 4/11/24 at 8:16 am to sidewalkside
quote:
If the engines can PULL enough wind over the wings surface it will achieve lift even without the plane appearing to move forward to a bystander viewing.
A jet engine produces thrust, it does not pull air under(not over) the wing to create lift.
Posted on 4/11/24 at 8:17 am to sidewalkside
They did this on mythbusters a while back. The planes wheels dont "drive" theyre free rolling so the fact the ground is moving backwards in relation to the thrust only means the wheels would spin faster than the plane is travelling. kind of like small planes at an airfield are strapped down because a wind gust will pick them up regardless of if theyre moving or not.
Posted on 4/11/24 at 8:18 am to sidewalkside
Keep this in the other thread.
Posted on 4/11/24 at 8:20 am to sidewalkside
Ggoogle airfoil
Posted on 4/11/24 at 8:20 am to sidewalkside
Don't they test flying things out in wind tunnels?
Oh! If you hooked a giant wind tunnel around the plane it could fly anywhere with no engines, right!?
Oh! If you hooked a giant wind tunnel around the plane it could fly anywhere with no engines, right!?
Posted on 4/11/24 at 8:41 am to sidewalkside
quote:
Does a plane achieve lift by pushing a wing through the air or by pulling air over a wing?
quote:
If the engines can PULL enough wind over the wings surface it will achieve lift even without the plane appearing to move forward to a bystander viewing.
I’m in flight training right now
One time we encountered 55kt winds at 1000’. Pointed the nose into the wind and “hovered” over Port Allen literally staying stationary with the engine nearly idled.
It was a really cool demonstration that all you need for lift is air moving across the wing no matter the source
Posted on 4/11/24 at 9:25 am to sidewalkside
A plane can and will take off from a conveyor.
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