Airspeed is always 0 so it can't fly. Basic physics. While it's true that the propeller might be able to produce enough thrust to directly lift the plane up, it will immediately lose power upon lifting and immediately fall back down.
A plane can fly at a 0 airspeed, but usually planes with low stall speeds can accomplish this. Are u referring to a scenario when the thrust generated wouldn’t be able to provide the appropriate amount of lift to ensure constant flight?
Last time I checked, you need air flowing over and under the wings of an airfoil for it to gain lift. Pulling, or rolling it I guess, on a moving treadmill won't make it takeoff, there's no aerodynamic lift there.
@@DustMug There'd probably be more drag if there'd be no holes, because then the wing would be shaped like a box. Ideally the leading edge should be round shape.
It can't fly because: The ground is moving instead of the plane The wings aren't curved enough to provide lift. (curved outer wings in aircraft help with lift) And, lastly: No engine to actually propel the propeller.
@@bananamarshmelowcatminy7476 what he said was right. Ground is moving instead of the plane, the Air speed is 0. The wing isn't curved, combined with 0 airspeed it doesn't produce lift. Propellor doesn't produce thrust because as the other guy said nothing propelling it.
The wings don't actually need to be curved to produce lift, a symmetric airfoil, for example just a flat rectangle, can produce lift provided it has a angle of attack greater than zero and sufficient airflow. It won't be very efficient though, but it is 100% possible.
if the wheels lifted off the ground, it'd probably only hover for a second before coming back down since the treadmill was what made the propeller spin
It will never take off, no matter how fast it goes, air moving over the wings is what makes it fly, and it stays completely still, so yea, if you think about it it's doing nothing.
I think if you could have attached the tether higher up (maybe with a forked thread attached to the wings) the friction in the gears may have provided enough resistance for the tail wheel to lift up, giving the illusion of takeoff
The wings are completely flat on pretty much all sides. That means that there is no wind going under the wings. Mostly because there is no wind at all. No matter how fast you make the propeller spin, you cannot get a plane to lift off the ground without wind. Wind helps create lift. To get an airplane off the ground you need thrust+lift.
Not gonna lie, this is probably the best Lego plane experiment. Instead of chucking Ito out of the window (and losing pieces forever) you try a takeoff method. The problem is that air needs to go under the wings to create lift. Great experiment setup though.
You made a mistake here. Instead of trying to do it like a normal plane, try throwing it instead. I threw my lego jet airplane and it worked...for a second.
The wheels are geared to the propeller so if it leaves the ground even if it had aerodynamic wings it would loose propolustion unless there was a strong enough wind or a fan to propel it after it left the ground.
The way a plane takes off is not how fast the wheels move it’s how fast the plane moves. On the treadmill it stays still even though the wheels are moving. Also if the plane is moving fast enough and it’s engine shuts off it can still glide. Same way a paper airplane has no engine but still glides.
No, cause the wings if blocked (due to there's no good rounded peices like a real planes wings would create resistance/ drag at least this was the holed peices give more air flow
@@StaceyIsles dude, the wings having at least some drag is how planes fly. Most wings have an almost elongated semi-circle shape to them. That allows it to have low pressure on the top, and high pressure on the bottom to allow lift off. If it has alot of holes, no air pressure can be held under the wings to allow take off
@@freestyledheartbreak-topic8146 the amount of aerodynamic experts in this comment section that doesnt even know what an airfoil is is actually insane bro
@@freestyledheartbreak-topic8146 there's 0 peices with a curved siding, the best peice is what he's using, all he needs is controllable ailerons, Look at a wing it's not a 90° angle it curves, what he's using at least where the holes are has curves, it's alot less resistant than what you want Look at any plane from the bi plane to the b2 spirit bomber
It stays the same position, when you run a bunch of air hits you, if the plane did propel from the propeller, it could move and gain airflow to fly. Though without a big enough wing, it would just go on forever. If there were elevators, it would probably push the plane up a bit, though it would fall down since the wings aren't big enough. If it is big enough and was actually moving, it could fly.
The wings aren't built to create enough lift. They must be a certain "teardrop" shape to allow air to speed up on top and slow down on bottom. This creates an area of low pressure that generates lift.
I’m not clear what situation you’ve created here: 1. Is the propeller aerodynamically effective? Does it move air backward, or more accurately, does it provide wing-like “lift” in the forward direction? 2. Are the wheels free-rolling, like the front wheel of a bike, as opposed to a motor driving them or having substantial friction? If the answer to both of these questions is “yes,” then it will move forward (relative to the air around it) regardless of how the treadmill is set. Clearly it’s not moving forward, so one or both of those conditions is not being met. I’m guessing there are invisible fishing lines holding it in place, but I can’t tell for sure. Then, if “yes” to the above two questions, whether or not it takes off, is the same question as whether it would take off from stationary ground. I’m guess that that’s very unlikely, because it looks like a really bad airplane (e.g., no airfoil contour on the wings).
The only way the plane can take off from a stationary movement is if you can blow air towards the wings fast enough to create enough lift to fly. In that case you wouldn't need a runway anymore.
It can't generate lift power, because it stands still compared to the air. Even if the lego plane could reach ~300 km/h, it would still remain on the ground, since no air is passing through the wings. You need a ventilator to generate air flow.
If you fly the plane fast enough the plane will reach escape velocity of the earth and will take off but the ground under the plane probably can’t reach that speed
I suppose theoretically, with a very fast treadmill, if it went fast enough it could drag enough air around to create lift at the wings. If the wings are actually even remotely wing shaped in profile. And if the wheels didn't melt first.
Sadly that’s not how it work. No matter how fast the treadmill goes the plane will always take off. But you need it to move forward by having the prop precise the thrust
i should be studying for my written exam... instead im here watching a lego plane that i knew wasnt going to take off, but i still stayed for the end ...
the reasons that it cant fly is because the plane is not moving so no air is flowing at the plane and the air is flowing in and out of the wings and it is too heavy. the planes wings also need to be the right shape for air to flow in the correct way to provide the plane lift and make it airborne.
If you don't even understand the physics of flight, there's no way you'd be able to build a model airplane. I could tell it can't fly from the thumbnail alone. Square wings with holes, propeller designed to look, not function, like a propeller, etc... but the fact that it doesn't pick up actual speed is the biggest nail in the coffin.
Don't matter how fast you make the ground move under the plane it will never take off until it has air flow under the wings
the only thing it could do really is move forward using the propeller's thrust if it gained enough
The wings could be larger and the could add cardboard airfoil
I think y’all read the comment wrong
@@mrcactus245 It wouldn’t matter either way since it’s only the ground moving… so the air is stagnant which means no lift.
@@thatoneguy8633 oh yeah true, im an idiot lmao
Airspeed is always 0 so it can't fly. Basic physics. While it's true that the propeller might be able to produce enough thrust to directly lift the plane up, it will immediately lose power upon lifting and immediately fall back down.
@Oliver Yap thank you for the totally useful comment that adds a huge lot into this conversation.
true
nerd 🤓🤓🤓🤓🤓
🤓🤓🤓
A plane can fly at a 0 airspeed, but usually planes with low stall speeds can accomplish this. Are u referring to a scenario when the thrust generated wouldn’t be able to provide the appropriate amount of lift to ensure constant flight?
Last time I checked, you need air flowing over and under the wings of an airfoil for it to gain lift. Pulling, or rolling it I guess, on a moving treadmill won't make it takeoff, there's no aerodynamic lift there.
also those are far from being airfoils :))
you seriously think he was trying to get that thing to fly
True
Not to mention the absurd amount of drag created by the holes
@@DustMug There'd probably be more drag if there'd be no holes, because then the wing would be shaped like a box. Ideally the leading edge should be round shape.
0:12 - Boeing 777 lining up
0:20 - Boeing 777 taking off
0:28 - Airbus A320
0:35 - Boeing 737
and thats true.
That aint no triple seven thats a piper 💀
It does sound like a GE90
Ngl I can't tell if the sounds were edited or real
Sound like Stuka👴
It can't fly because:
The ground is moving instead of the plane
The wings aren't curved enough to provide lift. (curved outer wings in aircraft help with lift)
And, lastly: No engine to actually propel the propeller.
Bullshit, the plane didn't took off because there was no air passing through the wings to produce lifts, that's how physics works
And the wings have holes in them
This is all wrong the onky thing you need is lift and thrust
@@bananamarshmelowcatminy7476 what he said was right. Ground is moving instead of the plane, the Air speed is 0.
The wing isn't curved, combined with 0 airspeed it doesn't produce lift.
Propellor doesn't produce thrust because as the other guy said nothing propelling it.
The wings don't actually need to be curved to produce lift, a symmetric airfoil, for example just a flat rectangle, can produce lift provided it has a angle of attack greater than zero and sufficient airflow. It won't be very efficient though, but it is 100% possible.
Imagine it went so fast that it actually started flying
That would be insane
That would be insane
Yeah lol
if the wheels lifted off the ground, it'd probably only hover for a second before coming back down since the treadmill was what made the propeller spin
It will never take off, no matter how fast it goes, air moving over the wings is what makes it fly, and it stays completely still, so yea, if you think about it it's doing nothing.
I think if you could have attached the tether higher up (maybe with a forked thread attached to the wings) the friction in the gears may have provided enough resistance for the tail wheel to lift up, giving the illusion of takeoff
you have an interesting mind😉👍🏽
@@4Rubyn please try that, i want to see it
But then the propeller would stop
@@tracer2518 that's why it would be forked, to go around the propeller
@@shaldurprime7154 I think they meant because the wheel lifted off, though the prop isn't powers through the tailwheel so it shouldn't be an issue.
The wings are completely flat on pretty much all sides. That means that there is no wind going under the wings. Mostly because there is no wind at all. No matter how fast you make the propeller spin, you cannot get a plane to lift off the ground without wind. Wind helps create lift. To get an airplane off the ground you need thrust+lift.
Of course there's air going under the wings unless it's a vacuum
@@jackhay4478He means air going under the wings at a high speed going in the opposite direction of the plane
@@Alec-ri9tu still doesn't work
@@jackhay4478 It does, plus the runway is moving instead of the plane, meaning the plane has no velocity and therefore can't takeoff
the propeller is pushing air through the wings. i think the problem here is that there's no airfoil
If ground speed is speed of light or anything, it still can't fly if the airspeed is 0
Not gonna lie, this is probably the best Lego plane experiment. Instead of chucking Ito out of the window (and losing pieces forever) you try a takeoff method. The problem is that air needs to go under the wings to create lift. Great experiment setup though.
What needs to be done to make it fly?
Hey i have that one
I have that same plane
I have this plane too!
Can you show how to build that plane
M a k e i t f l y
You made a mistake here. Instead of trying to do it like a normal plane, try throwing it instead. I threw my lego jet airplane and it worked...for a second.
Equivalent to “press alt+f4 for rocket launcher”
The wheels are geared to the propeller so if it leaves the ground even if it had aerodynamic wings it would loose propolustion unless there was a strong enough wind or a fan to propel it after it left the ground.
I notice that
The way a plane takes off is not how fast the wheels move it’s how fast the plane moves. On the treadmill it stays still even though the wheels are moving. Also if the plane is moving fast enough and it’s engine shuts off it can still glide. Same way a paper airplane has no engine but still glides.
@@mattyo8828 yes, but on this specific plane the wheels spinning makes the prop spin. That's what OP was saying
@@madogmabz the plane isn't moving
Is it just me or I found the whine of the propeller mechanism to be satisfying?
bro accidentally made a Stuka dive sound
The wings would have to be shaped different. The holes in the front of the wings is a huge disadvantage
No, cause the wings if blocked (due to there's no good rounded peices like a real planes wings would create resistance/ drag at least this was the holed peices give more air flow
@@StaceyIsles dude, the wings having at least some drag is how planes fly. Most wings have an almost elongated semi-circle shape to them. That allows it to have low pressure on the top, and high pressure on the bottom to allow lift off. If it has alot of holes, no air pressure can be held under the wings to allow take off
There isn’t enough airflow under/over the wings for them to work anyway
@@freestyledheartbreak-topic8146 the amount of aerodynamic experts in this comment section that doesnt even know what an airfoil is is actually insane bro
@@freestyledheartbreak-topic8146 there's 0 peices with a curved siding, the best peice is what he's using, all he needs is controllable ailerons,
Look at a wing it's not a 90° angle it curves, what he's using at least where the holes are has curves, it's alot less resistant than what you want
Look at any plane from the bi plane to the b2 spirit bomber
This is beautiful
Thanks 😊
Смотрю Ваши видео с удовольствием и этот ролик не стал исключением! Так держать!
Спасибо большое 🙏🏼👍🏽😊
It stays the same position, when you run a bunch of air hits you, if the plane did propel from the propeller, it could move and gain airflow to fly. Though without a big enough wing, it would just go on forever. If there were elevators, it would probably push the plane up a bit, though it would fall down since the wings aren't big enough. If it is big enough and was actually moving, it could fly.
The wings aren't built to create enough lift. They must be a certain "teardrop" shape to allow air to speed up on top and slow down on bottom. This creates an area of low pressure that generates lift.
0:38 going full throttle
0:50 the scene can fit easily in a movie scene
0:20 When a piston propeller sounds like a GE90
I think bro skipped physics class a bit too often
Sounds like a Turboprop! Cool test anyway!👍
A functioning Lego remote control plane would be the best thing ever
Easy to rebuild when it crashes...
when the lego plane reached 6km/h it sounded like a boeing 787 dreamliner when its engine start.
Yep, it’s sound very realistic 👍🏽
@@4Rubynthe real reason to why you should not skip english classes in school:
It's not because lego plane can't fly, it has no airspeed. The plane has to move, not the ground!
so cool!!❤ but the plane needs airflow😂
It's air-speed that matters, not ground-speed.
its not a an airplane its a streetplane😂😂😂
Can’t wait for the guy to realize that the airplane is stationary meaning no air is going under the wings to provide lift.
"My plane does not fly" - Random man that gave 1 star to a lego plane set
That sound is awesome!
Doesn't really matter how fast the rotor spins, almost anything with free spinning wheels can stay on a treadmill like that.
Yep, lol
Just to humor the audience, ya probably could've gotten some fishing wire and made it look like it took off.
why did the thrust of the propeller not help to advance a little?
the propeller blades are not angled, so they do not generate any thrust.
@@ForzaMonkey thanks for the answer!
@@ForzaMonkey pause the video at the start and you can see they are angled
@@stevenre4250 oh yeah you're right.
I’m pretty sure it’s attached to a wire
Screw the wing shape, airspeed always is zero. It’s never gonna fly 😂
I’m not clear what situation you’ve created here:
1. Is the propeller aerodynamically effective? Does it move air backward, or more accurately, does it provide wing-like “lift” in the forward direction?
2. Are the wheels free-rolling, like the front wheel of a bike, as opposed to a motor driving them or having substantial friction?
If the answer to both of these questions is “yes,” then it will move forward (relative to the air around it) regardless of how the treadmill is set. Clearly it’s not moving forward, so one or both of those conditions is not being met. I’m guessing there are invisible fishing lines holding it in place, but I can’t tell for sure.
Then, if “yes” to the above two questions, whether or not it takes off, is the same question as whether it would take off from stationary ground. I’m guess that that’s very unlikely, because it looks like a really bad airplane (e.g., no airfoil contour on the wings).
The only way the plane can take off from a stationary movement is if you can blow air towards the wings fast enough to create enough lift to fly. In that case you wouldn't need a runway anymore.
Almost went flying away 😎
Yep! 🚀
It will never fly unless there are air going over the wings.
fun fact : the set was inspired by the ww2 plane hawker hurricane!
Lift up the front and build a wing flaps, it’ll be in the air in no time.
It can't generate lift power, because it stands still compared to the air. Even if the lego plane could reach ~300 km/h, it would still remain on the ground, since no air is passing through the wings. You need a ventilator to generate air flow.
Lol I expected it not to fly but still wanted to watch 😂
The propeller starts to look like captain America’s shield when it’s going fast 😊
id love to see how the gears hold up after a test like this
It sounds like a Ju-87 Stuka going down
If you fly the plane fast enough the plane will reach escape velocity of the earth and will take off but the ground under the plane probably can’t reach that speed
Is nobody going to talk about the string that was connected to the front?
One of the few that know
its so that it doesnt go off the treadmill 🗿
Because it won’t stay on the treadmill otherwise?
You're the only one who has common sense😂@@demogod4955
It needs flaps or ailerons to lift it up.
Elevators for lifting, ailerons for rolling, and flaps to fly at lower speeds
Even if it had them, it still won't fly because the air is not moving, only the ground.
@@he-man4076 , right.
0:13 sounds like a a330 neo
Not at all
@@Wimp64true
@@Wimp64I meant like your right
It's great, I'll try it.
Looks like you recreated the Mythbusters episode about a plane on a treadmill in Lego without meaning to.
I suppose theoretically, with a very fast treadmill, if it went fast enough it could drag enough air around to create lift at the wings.
If the wings are actually even remotely wing shaped in profile.
And if the wheels didn't melt first.
Sadly that’s not how it work. No matter how fast the treadmill goes the plane will always take off. But you need it to move forward by having the prop precise the thrust
I saw it fly.
FedEx when its 11PM and i have a one day delivery:
Forget the aeronautical know-it-alls. That was COOL!
This is the stupidest thing i've ever seen💀
Hahaha you fooled everyone 😂 love it
i should be studying for my written exam... instead im here watching a lego plane that i knew wasnt going to take off, but i still stayed for the end ...
I like your optimism. You need airflow tough
So…. Spinning wheels make planes fly?
You could say this REALLY IS as aerodynamic as a brick🤣🤣😂😂🤣😭😭😀😀😀!,,,👍
Tell me you don’t understand physics without telling me you don’t understand physics.
Everyone gangsta until plane start flying.
the reasons that it cant fly is because the plane is not moving so no air is flowing at the plane and the air is flowing in and out of the wings and it is too heavy. the planes wings also need to be the right shape for air to flow in the correct way to provide the plane lift and make it airborne.
"THERE'S NO AIR IT WON'T FLY" said me, throughout the whole video
If this flies, schools should stop teaching aerodynamics.
Ohh so this is how video games make their plane engine sound effects
I thought it was going to take off 😂🙈
Another reason it can't fly is because the wings are flat and can't provide any lift.
Good sound❤
I see the problem, there’s no wind to generate lyft
Me: interesting
👴: having stuka flashbacks 💀
You have to move the airplane forward, not the ground.
Не расплавился и не съехал ! Идеально!
It sounded amazing though
Hmmm, make the wings bigger and thinner, make it lighter, and a better working propeller 👍
(Normal people buying a treadmill for running) this guy 😅:
It has no airflow so it can't fly. But it's still cool!
Thanks)
It need actual real wings!
I have this exact same plane :D
If this takes off, we have a new aircraft carrier design.
Cool But why does it make stuka sound
Lego outdid themselves, even the sound is similar)
If that science would ever work, we would have had vertical take off planes years ago.
Add a large fan and make the wings sharper, then, in theory, it should bounce up and down or lift off
Smartest youtuber:
😉😂
The moment i saw the treadmill moving, i'm 100% sure it wont be able to fly no matter how fast it is.
It looked cool though
As someone who understands physics this is very funny
The wings need airflow to fly
The noise that thing made was enough to bring grandpa flashbacks to midway
Heads up it’s a joke everyone is mentally ok
According to all known laws of aviation, there is no way a Lego plane should be able to fly
that looks so damn cool
no airflow, no fly. somebody needs to take high school physics again.
If you don't even understand the physics of flight, there's no way you'd be able to build a model airplane. I could tell it can't fly from the thumbnail alone. Square wings with holes, propeller designed to look, not function, like a propeller, etc... but the fact that it doesn't pick up actual speed is the biggest nail in the coffin.
0:21 Thats an A380 sound lol
try having two engines on the wings, the airflow from the engines might have a better result