If you want more detail on the explanation here it is: 1. The car is powered only by the wind. There is no motor or batteries of any kind. 2. The propeller does NOT spin like a windmill. The wind does NOT push it and make it turn. 3. Instead the wheels are geared to the propeller to turn it the opposite way, like a fan, so it pushes air backwards. 4. To start the vehicle the wind simply pushes on the whole vehicle (like a block of styrofoam) and gets it moving. 5. The wheels are turning so they turn the propeller in the opposite direction to how the wind is pushing it. 6. The prop is pushing air back so air pushes the prop forwards, accelerating the car. 7. Once you get up to wind speed there is no apparent wind on the vehicle. If the prop were spun like a windmill this would mean no more thrust. But, since the prop is operating like a fan, it still accelerates air backwards, generating thrust. 8. You can go faster than wind speed continuously because even when going faster than the wind, the prop can still accelerate air backwards (in the car's frame of reference) generating thrust. In a stationary frame of reference you would see that the wind behind the propellor is slower than the surrounding air. So it's clear that the energy is coming from the wind. FAQ: If power is coming from the wheels to turn the prop, why doesn't that slow down the wheels more than it gets the prop to push back? A: Because the wheels are moving over the ground much faster than the prop is moving through the air (because there's a tailwind). Example: Let's say the car is going 12m/s in a 10m/s tailwind, so faster than the wind (note the prop will be moving through an apparent headwind of 2m/s). Power = Force x Velocity Let's say the chain applies a drag force of 100N on the wheels to drive the prop. This means we're taking power from the wheels = FxV = 100N x 12m/s = 1200W If we apply this power to the fan, it can create a force of F = P/V = 1200W / 2m/s = 600N Admittedly I've assumed no losses, but even if we waste half the power, we'd still get 300N of thrust which is more than the 100N of drag the prop adds to the wheels. The key is that we're harvesting power at higher speed, lower force, and deploying it at lower speed, higher force (which is only possible because we have a tailwind - in still air this wouldn't work because the relative velocity of the wheels over the ground would be exactly the same as the relative velocity of the prop through the air).

@johnborton4522

2 жыл бұрын

Nicely done Derek (from the co-designer/builder of the Blackbird)

@greenkid336600

2 жыл бұрын

There appeared to be gears for shifting. Is there an optimal reduction/force conversion?

@coolaun

2 жыл бұрын

Good explanations. Just one niggle: in point 4 you say "To start the vehicle the wind simply pushes on the whole vehicle". In fact even at the start, with the vehicle stationary on the ground, the forward force of the air on the prop is greater than the backward force of the ground on the wheels, due to the gearing ratio. So there's no need for "bluff body" to self start.

@FURY-bc6cj

2 жыл бұрын

Love from India

@SLA-yo4is

2 жыл бұрын

It was cool!

"That's great in practice, but how does it work in theory?"

@dougearnest7590

2 жыл бұрын

This will be the most brilliant comment of them all.

@haraldschurr1035

2 жыл бұрын

great comment!

@bobbilaval6171

2 жыл бұрын

You win the Internet today

@cragnog

2 жыл бұрын

bark bark!

@jackgilmore152

2 жыл бұрын

Elite comment my friend bravo

"I expect a lot of pushback in the comments." That's okay, this thing is driven by pushback.

@EscapeMCP

2 жыл бұрын

Also "Keep it civil". Sod that, I'm getting the police involved ;)

@unknownhacker7052

2 жыл бұрын

@@EscapeMCP what?

@LethalChicken77

2 жыл бұрын

No, it's driven by pushforward

@frogsinpants

2 жыл бұрын

@@LethalChicken77 Pushforward gets it started, but it's the pushback that provides the motive force to turn the prop.

@MichaelOnines

2 жыл бұрын

@@unknownhacker7052 if he is breaking the laws of physics then obviously the police should write him a ticket.

I was blown away that so many physicists called it fake or impossible.

@decone4839

Жыл бұрын

you were blown away

@SavingMsBlack

Жыл бұрын

Don’t be. - Copernicus

@Kirkaig

Жыл бұрын

same

@TheRodmena

Жыл бұрын

The reason I left university.

@Anialatedable

Жыл бұрын

​@@TheRodmena A flunky who uses any excuse to make themself feel better. Lol. People disagreeing and attempting to disprove each other is how Science happens. Else we get people who believe in bs without questioning it.

This is totally the post-apocalyptic extraplanetary desert science-fantasy vehicle of unfathomable awesomeness.

@danielkingery2894

Жыл бұрын

I'm pretty sure I remember this race/chase scene from the second MaddMaxx movie??😜

@its_prince4real

Жыл бұрын

Henji😅

@dhageakshay

Жыл бұрын

So is your comment

@jacovm3091

Жыл бұрын

And it will fit perfectly with my zombie swords In my apocalypse-prepared beg

@xFELA

Жыл бұрын

You nailed the best comment, I'd love to see it in Dune or The Martian Chronicles

When your online argument with random people is so heated you ended up building a vehicle that seems to defy logic....

@JimmyJonJillakers

2 жыл бұрын

Just a few steps above "I am trained in gorilla warfare"

@finlaymcdiarmid5832

2 жыл бұрын

Was the guy who made it from florida?

@nervousstate

2 жыл бұрын

Just another day on Reddit

@The_Viktor_Reznov

2 жыл бұрын

"Source: dude, trust me" took personally

@Fyr35555

2 жыл бұрын

It's like a more sane version of the flat earther who built his own rocket (and ended up killing himself) and with actual scientific basis of course

"If I put two sailboats, that's a prop" that explanation was mind-blowing.

@KanuckStreams

2 жыл бұрын

It was at that moment that I understood his logic.

@lordquintus1419

2 жыл бұрын

Yeah that is by far my favorite explanation for propellers ever

@metamorphicorder

2 жыл бұрын

Well its a rough clumsy metaphor. In the two sailboat model, theres no direct communication or action reaction between them. A less visually stunning explanation is that the prop acts as a sail, although in this case, an active sail rather than a reactive one, and that its spinning is exxientially the equivalent of tacking a boat into the wind. Instead of changing the direction of the vehicle as a whole it channels that energy into an axel around whice spins the prop. The prop, you cant think of it as a reverse sail, grabs air and changes its direction and velocity, gaining some in the process. The change in direction of a boat tacking is now the rotation of the prop.

@mathiasvofrey9240

2 жыл бұрын

only that this analogy Cannot apply because it requires the boat(s) to Not move in the same speed and direction as the wind itself which the wheeled vehicle is doing. please forget all about the boats, they should never have mentioned the boats. just think about the model on the treadmill, specifically on startup, imagine you are only holding/pushing the model with a finger (reallife wind is your finger) then see what happens...

@decidrophob

2 жыл бұрын

For me, sailboats traveling faster than the wind is way more counterintuitive than the propellers absorbing wind energy that Derek explained towards the end of the video. Do you guys understand how sailboats go fast without understanding Navier-Stokes equation or some equivalent sophisticated fluid dynamics?

As a windsurfer already going (much) faster than wind while sailing sidewind seems magic, but the physic involved it's not so difficult in the end: just some vectors. The very brilliant thing here is to have made a device that can go "sidewind" while going downwind.

@narrenmagie

9 ай бұрын

I have watched 3 videos about this phenomenon now trying to understand the underlying principle / the idea behind it. I didn't really get it. You put it into two beautiful sentences and I realized what's going on. Great! Thanks!

@FDUflyingrobin

8 ай бұрын

@@narrenmagie That's the spiral cartoon at the beginning of the video. It showed it quite clearly but it didn't verbally explain it explicitly.

@user-bi6iw9ng8j

6 ай бұрын

Windsurfer can go faster than wind but not in wind direction. If you starts going down too much - you lost your power and sail stops to pull you futher. thats why maximum speead are reached at 120dergre from wind, but not 180.

@sailbatten2056

4 ай бұрын

@@user-bi6iw9ng8j To be clear, this is what the OP was saying; it's not in opposition to it.

@Nikarus2370

2 ай бұрын

Even though I know it works and have sailed a small bermuda rigged boat into the wind faster than the wind blowing the other way... still makes my head hurt thinking about wy it works.

Now just give it a few years and we will have the first-ever cylinder earthers.

@Thomas_York

2 ай бұрын

Please no, the flat earthers are enough 😭

@victorsago

9 күн бұрын

@@Thomas_York Yeah, they're a lot of fun! :P Now, imagine them arguing with the cylinder earthers! 😂

It's not breaking the laws of physics, it's breaking the laws of understanding.

@emostorm7

2 жыл бұрын

Yes

@elevenpsy

2 жыл бұрын

To the ignorant. Otherwise it's just intriguing.

@AndrewThibeault

2 жыл бұрын

Yes, this. If it looks like it breaks the laws of physics, then we don't understand that particular part of physics enough.

@gordoncellist

2 жыл бұрын

This!

@darkcognitive

2 жыл бұрын

Preach.

Experiments made out of spite to prove people wrong is the best kind of science

@ozhinz

2 жыл бұрын

correct

@yes-tk2rr

2 жыл бұрын

correct

@VENOgrad

2 жыл бұрын

correct

@elkinmontoya9640

2 жыл бұрын

correct

@keyboardwarrior4994

2 жыл бұрын

I think the initial concept was not to prove people wrong. The initial one was purely to come up with a vehicle design which will take it faster than the wind. However, as always in scientific research, there will be critiques, negative reviews, etc. That's what you see as "out of spite to prove people wrong". No, it's not out of spite to prove people wrong. It's part of their research to prove that their design works. Anyways, their research does have promising future. It might add and build a foundation for further development on non-fossil fuel wind-powered transport vehicles. Going faster than the wind is a big deal.

The best part is even when they had a working model people on the internet told them it was impossible. If you have an idea you think will work don't let the internet stop you.

@youngisaiah3499

10 ай бұрын

stan lee quote

@Frankovelli

10 ай бұрын

The reasoning that propelled him to make a working model was the same reasoning that was preventing people from accepting it as true. If it didn't need to be seen to be believed, people would have just taken their word for it.

@HealthCarePro

8 ай бұрын

They say perpetual motion is impossible, but then, right from electrons to planets and stars and galaxies, everything is in motion...perpetually. We need to change how we look at things.

@EricPalmer_DaddyOh

8 ай бұрын

There is a lot of stuff on the internet that is faked. I trust Derek. He has a reputation for an Element of Truth.

@191246mann1

8 ай бұрын

he didn't make working model ,,,@@Frankovelli

As a yacht racer and captain it took me 25 years to accept and understand apparent wind and going faster than the wind. So as a base level I think I already understand more than your average person. But I did have to watch every second to understand how this works. Mind still boggles.

@stevesilsby5288

Ай бұрын

This with the tremendous drag of pulling the hull through the water! It is indeed mind boggling.

The inventor must have been grinning so hard in that shot where he's holding the wind sock. Basically got the best shot possible with great equipment that he was right all along.

@Fs3i

2 жыл бұрын

And distributed to a large audience, with a non-neglible part being scientifically literate.

@ericeaton2386

2 жыл бұрын

If you look closely in the slo-mo shot, you can see that in fact, he has a huge grin, haha.

@villz1267

2 жыл бұрын

Literal picture perfect slowmo windsock vs telltale

@Fortzon

2 жыл бұрын

"That'll finally show them internet trolls and professors!"

@crazymotionride

2 жыл бұрын

Lord Brabazon is the inventor of the auto gyro rig. He had a boat with one on in 1934 and proved this worked back then.

"I am not a stupid person, but i cannot understand" is now my new favorite quote

@apeanders

2 жыл бұрын

Turns out, the two are not mutually exclusive.

@DoctorMagoo111

2 жыл бұрын

That was my favorite of the forum comments. No blowharding or trying to disprove things, just an earnest acknowledgment of not understanding.

@n0us.

2 жыл бұрын

@@DoctorMagoo111 thank you random dude on the internet with a blank profile pic with a W on it.

@agifirmansyah1183

2 жыл бұрын

@@n0us. D*

@matsv201

2 жыл бұрын

While i´m... well fairly smart.. i think the explanation was quite good and .. while its not obvious, it make sense at least to me. There is still energy to take out of the wind, even at higher then wind speed, but you would need a reference that is still lower than wind speed. The wheels make the reference of the prop lower than wind speed make it possible for the wind to push the vehicle over wind speed. The wind is not really pushing on the vehicle, it pushes on the reference speed of the prop

Once you mentioned the "fan driven by the wheel" it really starts to make sense. Imagine that the fan is just a giant sail, then it would go down at wind speed; and by converting the energy at the wheel to the fan it gets this additional oomph that pushes it faster.

@user-bi6iw9ng8j

6 ай бұрын

sail size no matter if there is no wind that blow to it. When you moving at wind speed downwind - apparent wind from moving forward fully compensate wind and in propellers will be only apparent wind from its rotation. But there is drag in propellers so it will slow down, but no energy comes from wind and car will slow down till wind stars push it again. So it can't move faster. It it moving faster - aparent wind from moving with aparent wind from rotating - creates backward lift in propellers and it again slow downs. The only way how it is possible (and we see it in video) - if wind is slow down - car some time will move faster and slows down to wind speed.

@famiguy4533

5 ай бұрын

@@user-bi6iw9ng8j Nope. The wind doesn't slow down in the video. The wind is able to accelerate the car to a speed that is FASTER than the wind itself.

@user-vt4up5ij9d

4 ай бұрын

@@famiguy4533Then why didn’t they show the actual wind speed during the demonstration? All they showed was the direction. If the wind dropped from 15mph to 12mph, that would explain the change of the flag on the front. Literally all they needed was a cheap speedometer and wind speed gauge to prove it works. And they didn’t use them. It’s fake and Derek fell for it.

@ShaharHarshuv

3 ай бұрын

But it's not taking the energy from the wheel. If it has, the wheel would slow down. What Derek explained is that it's actually taking the energy from the wind, slowing IT down.

@polkad3v

3 ай бұрын

@@ShaharHarshuv The propellors cutting into the air in front and pushing it backwards like a fan would, seems to be the faster than wind addition.

I had the same problem happen to me in a middle school science class… teacher asked if a plane could lift off if it was on a treadmill going backwards as fast as the plane going forwards. If the speed came from the propellers and not the wheels then it shouldn’t matter if the wheels were turning backwards… I was the only one in class saying the plane would lift off. Interesting thing (taught me a lot about people) is that I got threats and was even on the receiving end of violence when I would not change my stance. When we watched a mythbusters video that showed the plane did lift off they still wouldn’t believe and continued to threaten and bully me. Perhaps the most dangerous people in our society are the ones who think they know and will not listen.

@robde-e-e

Жыл бұрын

It will only lift of if there is enough friction between plane and treadmill, because only then the props can move enough air around the wings without the plane going forward. I think...

@michalgrbk

Жыл бұрын

When the violence reaches the stable state of full development, its initial cause becomes irrelevant. In other words, people just like to kick someone's ass, and proving them wrong makes the situation even worse.

@yujinhikita5611

Жыл бұрын

i dont quite know if im understanding it right, do you mean the plane is standing still in comparison to someone not on the treadmill? or is it moving? because my understanding of lift is when you have air flowing over and under the wing and if you arent moving through air you dont have lift, the treadmil isnt moving the air only the ground. im confused here. edit: so i watched the video from myth busters. the plane is moving through the air so obviously the plane will take off. however, the question makes it seem like the plane wont have any relative speed thus obviosly it wont take off. the question is bad. the plane in myth busters takes off because it has wheels, and the forward thrust is stonger than the backwards pull. if the aircraft was designed to fly slower and has a weaker engine than the car could pull under it the plane couldn't fly that is also if the aircraft has no enertia or the wheels have alot of friction. frankly the whole thing is just a trick question.

@michalgrbk

Жыл бұрын

@@yujinhikita5611 Yes, the whole thing is about analyzing the mechanics and realizing, that most of the energy of the treadmill would be lost, so propellers would produce enough force to overcome it, but this applies only to actually existing planes put on reasonably feasible treadmills, but not all the theoretical objects and conditions we could possibly test. This makes the question quite pointless.

@jmodified

Жыл бұрын

The plane can take off if it has sufficient forward speed relative to the air. How fast the wheels are moving is inconsequential, unless it is on a treadmill moving so fast that they burn up while most of the weight is still on them.

this is going to become a trick problem on a physics exam.

@brianbeasley7270

2 жыл бұрын

It already has been used for that in a physics contest environment by a group of physics teachers.

@von...

2 жыл бұрын

@@brianbeasley7270 were you in that group of physics teachers? something tells me maybe.

@akunog3665

2 жыл бұрын

@@von... I could be wrong, but I think he's referring to the video. The thing is built and argued about by a group of physics teachers if I recall correctly.

@ShimmeringSpectrum

2 жыл бұрын

I think "Airplane on a treadmill" is already a common physics argument and this seems like a variation on that theme.

@GalacticalAmbassador

2 жыл бұрын

Or the bonus question which is also usually the trick question

Damn the explanation with the two sailboats was amazing.

@terbo2000

2 жыл бұрын

I agree that's when it clicked for me. Once we imagine the boats spiraling around the cylindrical earth, we can lock the boats in place and now the earth is spinning. Congratulations! You've made a torque!

@yayayayya4731

2 жыл бұрын

@@terbo2000 it was like that moment when you realise 💡

@blakereid5785

2 жыл бұрын

It was kinda sneaky, in a good way. Oops high jacked your brain.

@fatsquirrel75

2 жыл бұрын

I still don't understand how boats travel faster than the wind. But knowing they can made that explanation a winner.

@jmacd8817

2 жыл бұрын

No. That explanation is 2 separate vehicles tacking. The geometry looks the same, but the physics is wrong. Using the wind to blow the body of the vehicle, and the prop pushing, works fine

Always love when people prove other “know it alls” wrong

@kornflakesss

Жыл бұрын

Fax. But you gotta love these know it alls. They help these geniuses push the human race forward.

@TeIwiNgaroRameka

Жыл бұрын

I love comments from "know it alls" where you can clearly tell no research was done at all...

@jacobgoodstone7572

Жыл бұрын

@@TeIwiNgaroRameka Ah, yes the "I looked it up" people. Or the "I think that's true" people

@normvargas2799

2 ай бұрын

It is glorious to watch.

This setup is an active sail(s) combined with wills paired by an accurate rotation ratio I like to see if some telltale thing is placed behind the fan this fan is redirecting a large volume of air in another direction in a cone shape which a blackbird in the center of it This system will work as long as the wheels are on the ground. Rick explained how it worked, clear in minutes 8:00 to 8:30.

@JaceDeanLove

Жыл бұрын

I like large Valium

@coleballenger4595

Жыл бұрын

@@JaceDeanLove Me too bruh. Me too.

Lazy Physics Teachers: "Can't be done." Crazy Desert man: "Hold my beer."

@martymodus7205

2 жыл бұрын

Physicists should be skeptical of a claim like this without a mathematical or physical model to demonstrate that the claim is true. So, perhaps an appropriately skeptical physics professor rather than a "lazy" one. ;-)

@frissonsknives

2 жыл бұрын

Hahahaha

@12footstroke15

2 жыл бұрын

Sounds like Marty may be a physicist

@collinsmcrae

2 жыл бұрын

I think the criticism against the professor was more to do with what they had to say about the treadmill.

@Ronnypetson

2 жыл бұрын

In this case, "Hold my Heineken".. the dude was wearing it

"JUST GO WITH WHAT FEELS LIKE IS SLOWING YOU DOWN" SCIENCE!!!!!!!!

@vaisakhkm783

2 жыл бұрын

This deserves more like...

@sabarisuresh1458

2 жыл бұрын

physics!!!

@thombruce

2 жыл бұрын

Science isn't an exact science.

@frankharr9466

2 жыл бұрын

Better. It's engineering. Prototype engineering.

@dargtagnan3696

2 жыл бұрын

*engineering

8:05 was my absolute favorite part of the video. jumping from an intuition to an abstraction to a mechanical solution. amazing stuff

I am 42 years old. I clearly remember that as a child, I often laid in the grass and watched the sky. One thing I always paid attention to was how when a airplane flew I could always watch the end of it's contrail disappear at the same rate as the airplane moved. The length of the contrail varied but the fact that it always disappeared at the same rate as the pane flew always caught my attention.

@you2tooyou2too

Жыл бұрын

The trail length really depends on atmospheric conditions in the flight path. Mostly relative humidity. Under some conditions, there would be none, and others, the con. trail would be almost permanent. As conditions change along the flight path (as they usually do), the length changes (getting shorter or longer, but usually I think it would change fairly slowly).

@kennethmarx6656

Жыл бұрын

@@you2tooyou2too No. I clearly remember. The contrail Always! Disappeared. The changing element was the length of it before it started disappearing at the same rate as the airplane moved. It was never really long enough to cover hardly a quarter of the visible sky. Give or take a little but no. You are wrong. Hard to accept I'm sure but your statement is false.

@EEBPioneer

11 ай бұрын

It is a great problem for school physics lesson! ❤

everyone: the earth is a sphere flat earthers: the earth is flat this guy: imagine the earth is a cylinder

@THEMATT222

2 жыл бұрын

Astronaut 1: Wait, it's all cylinders? Astronaut 2: 🔫 Always has been!

@ardaozcan98

2 жыл бұрын

Earth is L O N G

@rngiscurse

2 жыл бұрын

Welcome to the l o n g Earth society

@The_House_Always_Wins

2 жыл бұрын

IT ALL MAKES SENSE NOW!!

@zagorim7469

2 жыл бұрын

nah the earth is an irregularly shaped ellipsoid. No i am not fun at parties. what's a party anyway ?

lol true inventor spirit: _"how do I stop this?"_ _"you, uuh... I dunno, push the lever."_ _"which lever?"_ _"the one that stops it!"_

@fredfrancium

2 жыл бұрын

If he turns on the opposite side of the wind, then it should stop. But he has short time to jump out before it start again 😬😬

@DEV-rw7eu

2 жыл бұрын

Ah yes the floor is made out of floor

@zemsaney433

2 жыл бұрын

It's the equivalent of gow4 when kratos says Kratos: find deer Atreus: where? kratos: in the direction of deer

@killerhawks

2 жыл бұрын

Krunk push the lever.... WRONG LEVER....LOL

@zemsaney433

2 жыл бұрын

@Creativity Forever ✔ I probably used sub bots and that's literally a fake verification mark next to your name

Amazing. One of the best things I've seen for a while👍. Absolutely loved it.

The fact that people that are actually physicists had a hard time understanding this, makes me feel so much better about myself.

@Rick_Cavallaro

3 ай бұрын

There were plenty of engineers, professors, and physicists that were every bit as certain as Kusenko that this was impossible. You're in good company.

Veritasium: "How do I stop?" *The creators watching each other akwardly* "We don't do that here..."

@donutzzs

2 жыл бұрын

rip INGILIS

@harsh3624

2 жыл бұрын

@@donutzzs we don't do that here.

@sudhirchaudhary6512

2 жыл бұрын

@@harsh3624 😂🎃

@kebabgud

2 жыл бұрын

All wind, no breaks

@YourEnvironmentSeattle

2 жыл бұрын

My favorite moment hearing about a nuclear thermal rocket was the answer to the question "how do you turn it off?" Answer: releasing containment will quickly end the criticality.

I forget who said it -- several years ago -- but went something like: "Sure they made it work in practice, but can they make it work in theory?"

@juandelacruz2343

2 жыл бұрын

Michael of Vsauce also said that when he collab with Adam Savage, i think it was the brachistochrone curve episode

@bxlawless100

2 жыл бұрын

That reminds me of the quote, “heavier-than-air flying machines are impossible”

@anonymouse9105

2 жыл бұрын

Bicycle: "Are you talkin' to me?"

@mixer6166

2 жыл бұрын

After a lifetime of experiencing the experts failing at countless numbers of their own predictions, while simultaneously mocking the ideas of people less accredited who actually changed the world, here's a prediction based on scientific data. The experts will be wrong. And the more of them that agree the more wrong they will be.

@furyking380

2 жыл бұрын

The way they tell the story it sounds like they had the theory part down first, then built it afterwards. More like theoretical physicists discovering black holes than the Wright Brothers building airplanes

Oh I finally get this. The wings turn because you move forwards. The wings then generate lift in the forwards direction which makes the wings spin faster. Nice

I love how simple questions and problems produces so beautiful answers and solutions. What a time to be alive

physicist, "nope not gonna work" engineer, "Imma assume the earth is like a cylinder"

@RoseSiames

2 жыл бұрын

Oh how the tables have turned

@chasbianco142

2 жыл бұрын

Oh how the turn tables.......have

@MrSeppei

2 жыл бұрын

Who is a real scientist now, HUH?

@MsBelenkas

2 жыл бұрын

Same engineer "also lets assume pi=3"

@donottrustanyonelol

2 жыл бұрын

@@MsBelenkas easier to memorize

Derek* “I expect a lot of push back in the comments” The comments* “THE EARTH IS A CYLINDER”

@happysongs4kyrone

2 жыл бұрын

@annag cocl "Please be civil" understood, talk about dababy and amogus now.

@bruceleealmighty

2 жыл бұрын

I'm thinking that if you have 4 sail boats going around a cylinder, you can have 4 blades.

@KleptomaniacJames

2 жыл бұрын

@@happysongs4kyrone affirmative

@bockariemansaray9196

2 жыл бұрын

And i was told the earth is flat...... dang it! Lmao

@bruceleealmighty

2 жыл бұрын

Come on you guys, you know it's conical

I think the sailboat tacking is akin to what happens with the propeller pitch. Further more the boat's keel and it's interactions with the waters friction probably have similarities with the cars propeller mechanism, momentum energy and friction with the ground. In any event, it is most likely the same fundamental as the balloon and the tacking boat.

This is probably my favorite episode. I fully understand how it works, and that it does work. Yet, It still boggles my mind.

That's it Derek, you settled the debate: *I'm a Cylindrical Earther now.*

@Rick_Cavallaro

2 жыл бұрын

I think maybe I need to make cylindrical Earth T-shirts with two sailboats circling downwind.

@toddthecarver

2 жыл бұрын

😜😄

@davidhollenshead4892

2 жыл бұрын

That thought experiment works for showing how the propeller is working on the cart. Of course, if you know how to sail, then you know how it works...

@i_g9854

2 жыл бұрын

😂😂

@steveperreira5850

2 жыл бұрын

Unfortunately, I had to explain to my 25-year-old daughter that the world is not flat after she read about the flat earth theory on the Internet. I was so sad, but she came around soon enough. And now I am confronted with the cylindrical earth theory, and I am Starting to fall for it. Ha ha!

Sending this video to my mom! She’ll be so proud of me..... for once.....

@Philitron128

2 жыл бұрын

Great work on the video man!

@edwardneal4819

2 жыл бұрын

Yeah. But I'm sure she'll still love you just the same. LOL!

@gantekkrystal5102

2 жыл бұрын

"Potato Mom here, proud of you son. Now, When will you get a real job?" /s

@nipunaathukorala739

2 жыл бұрын

Asian problems I guess

@Rick_Cavallaro

2 жыл бұрын

Your mother and I have always been proud of you!

Very interesting, it’s hard to believe but you did a good job explaining and proving it. It looks like a fun home project!

@user-bi6iw9ng8j

6 ай бұрын

if this really working - the faster you going - the more power you get. So it should accelerate more and more ... but it doesn't

Even after seeing the more detailed video about this, I'll just categorize this into the "okay I accept it, but I do not understand it" section in my brain.

@RagingGeekazoid

Жыл бұрын

Yeah, a direct explanation is a little complicated. You can't start with the wind making the propeller turn, because it would turn it the wrong way. You have to start with the wind just pushing the propeller forward, and that pushes the whole cart forward. The propeller doesn't start turning until the wheels and the chain start driving it, and that doesn't happen until the cart makes the wheels turn by forcing them to move forward.

@shinobuoshino5066

Жыл бұрын

It's trivial to understand if you ever rode a bike. Inb4 driving faster than you're pedaling? No way.

@Khwartz

Жыл бұрын

Hi @@RagingGeekazoid . Yes indeed! As we Understand the same this part, would You be Kind Enough to Review my Full Explaination in the Main Thread I have just posted? Please 🙏

@jimhyslop

Жыл бұрын

This is the rational person's reply, as opposed to the far too common "I don't understand it therefore nobody can understand it, and it cannot be true."

@Daniel-mw7pu

11 ай бұрын

The explanation at 8:10 illustrates how this works. A boat isn’t powered by wind blowing ON the sails, a boat is powered by wind blowing ACROSS the sails, which generates lift. The propellor is like two boats that are spinning on the same axis across a cylinder. The wind isn’t PUSHING the propellor, air is moving ACROSS them.

The way the creator explained the prop mechanic of a "cylindrical earth" is mindblowing, and that kind of out of the box thinking is the mark of a genius.

@Douken

2 жыл бұрын

That was the best explanation along with that animation.

@zan7838

2 жыл бұрын

flat earthers are.... geniuses?

@SomeGuy-ne3yl

2 жыл бұрын

that he animated that, was just fantastic : )

@grgr7377

2 жыл бұрын

The simplicity and elegance of this man's idea is so brilliant I cannot stop smiling :)

@alamtarokainkavan4524

2 жыл бұрын

@@zan7838 Hahaha good joke, you got me there.

That cylindrical earth argument was something really elegant and beautiful.

@uzlopak

2 жыл бұрын

So earth is not flat. It is cylindrical.

@josephcarter377

2 жыл бұрын

@@uzlopak ofc

@ericvandenavond8748

2 жыл бұрын

@@AstroCosmos nah

@77payne

2 жыл бұрын

trying to explain physics while wearing Heineken shirt. Nice

@randellreimer2877

2 жыл бұрын

actually I don't think it was. with that model, the forward motion of the boat/fan would be at most exactly the same as the wind speed, not faster. so it doesn't really explain anything.

You tube recommended videos hit a home run. Amazing video. Very educational. I love this.

20:22 the windsock and the telltale pointing at each other. I wish physics had been taught like this when I was in high school.

"Derek slow down" Derek: *I am speed*

@consentofthegoverned5145

2 жыл бұрын

Ca-chow!

@volo870

2 жыл бұрын

Imagine Jeremy Clarkson at the wheel?

@julmaass

2 жыл бұрын

@@volo870 imagine Richard Hammond at the wheel: How to total a one-of-a-kind vehicle?

@kieranwalker2249

2 жыл бұрын

4th comment I am speed enough to be 4th I am as speed as the 4th attempt

@whosthis4850

2 жыл бұрын

Ka mbn

"Slow it down derek!" Derek: *"i'm speed"*

@user-gw1fm9bt9o

2 жыл бұрын

Dude was an absolute maniac. I thought he legit went insane when the camera shot showed him completely unfazed, then crack a smile.

@EmeraldLavigne

2 жыл бұрын

**GOTTA GO FAST!**

@AxxLAfriku

2 жыл бұрын

I HATE people that HATE other people. The comment I respond to did not spread HATE. That is good. BUT! I get a lot of HATE comments on my amazing videos and I HATE it. Please don't start spreading HATE. Do I have to HATE you too, dear jerr

@mikaschmidt2110

2 жыл бұрын

lmao thats exactly what I thought to myself when I saw that

@ekaos5099

2 жыл бұрын

@@AxxLAfriku Just hate yourself and then the world will be cool!

the fan lowers the wind speed delta behind it, thus allowing it to move faster.

Another way to think of this is in terms of air pressure acting on the wing surfaces of the propeller it may make more sense. A sail boat going straight down wind reaches its maximum speed when the force from the difference in pressure from the back to the front of the sale equals that of the drag of the boat. By using the forward motion to drive the propeller from the wheels the pressure at the back of the propeller stays higher than if it were not rotating. Therefore, a pressure difference (and therefore a force) between the front and back of the propeller remains even above the wind speed.

@normvargas2799

2 ай бұрын

I think this is the part that people can't understand. The turning of the prop increases as the speed increases so the prop is always pushing against the wind and always has a net force backwards. It is not a sail other than when going slowly , nor is it a windmill catching the wind and rotating because of it. It will only stop accelerating when the air resistance of the speed of the vehicle and internal friction exceeds the push of the propeller.

As a sailor and physicist, the only one thing, that drives me crazy about this is that I didn't have this idea myself. The cylinder earth is brilliant!

@jeremystanger1711

2 жыл бұрын

Agreed - it's one of those rare moments of insight that really epitomises for me the beauty of physics.

@JeroenDStout

2 жыл бұрын

That is a really beauty, a cylinder earth being a spiral reference frame. French chef kiss.

@sidewaysdesign

2 жыл бұрын

I'm not a physicist, but the idea of the cylinder earth made it all make sense in an instant.

@super0spore0fan

2 жыл бұрын

I know, right? That explanation is straight up feynman-like!

@theeternal6890

2 жыл бұрын

*Aweseome.* Imagine if earth is flat tho.

"If I want to slow down at the end, I pull it back. Right?" Famous last words of Veritasium

@dharshiniiyer9925

2 жыл бұрын

That's what she said

@juijani4445

2 жыл бұрын

Levent!!!! You're everywhere!!!

@sumir

2 жыл бұрын

That's what *he said 😉

@quasarstarpower2858

2 жыл бұрын

Hey, fancy seeing you here. :)

@TrangleC

2 жыл бұрын

"I'm excited to survive!" Would be much better last words.

Visualizing a propeller as two sailboats on a cylindrical body of water is what made it seem less impossible in my mind. So cool.

Great vid. i loved all the nervous build up about it being dangerous and hoping to survive just to move at walking speed

@you2tooyou2too

Жыл бұрын

I'll bet the tip of that sail blade would pack a wallop! ;-)

Scientists always say, "Extraordinary claims require extraordinary proof." This is a rare case of someone making that effort.

@Justwantahover

2 жыл бұрын

Exactly.

@honkriptechnoblade4292

2 жыл бұрын

@@KINGJERMARCUS f off

Man, the explanation of "if the earth was a cilynder" was so straightforward.

@Kadranos

2 жыл бұрын

I see what you did there.

@90iatros

2 жыл бұрын

But it's flat tho...

@Plackomiot

2 жыл бұрын

@@90iatros Thats why he said "If"

@Kastnerd

2 жыл бұрын

But why did he not bring that back up at the end of the video?

@Neal_Sporin

2 жыл бұрын

I think the inventor's sailing around a cylinder analogy is incorrect. He said that the two sails about a cylinder form a prop. I agree with that, but according to Derek, the prop is not acting like a sail in the windmill (airfoil) sense.

So elusive to grasp the concept; to be honest I couldn't teach it so I'm not sure I really get it even when I'm sure I've finally gotten it. 'Props' to the idea-man. PS: I'm greatly relieved the title wasn't misleading, not that I wanted you in danger, but I'm glad both your well-being and integrity are healthy.

It makes sense to me from a sailing perspective, and it makes sense from a mechanical perspective that there is some way of using gearing with air. A venturi increases velocity and creates a pressure difference, so it is no great leap to figure there may be a way to manipulate the air in a continuous process to replicate what sailors have already demonstrated is possible.

The jump from cylindrical earth to prop is pretty much the spark of genius.

@rizkim2664

2 жыл бұрын

Yeah, it beautifully make me think that guy have a point. It may be wrong, but it really intuitively believable.

@RainAngel111

2 жыл бұрын

That part literally blew my mind. Just jelly up there now

@SidIcarus

2 жыл бұрын

100% By that point I had an intuitive sense that it would work but couldn’t grasp why. That was a bit of a “ohhhhh” moment

@xfallofmanx

2 жыл бұрын

Yeah that was the point I was like “oh” and I turned the corner to grasping it.

@3l84r70

2 жыл бұрын

that's how I understand it... the propeller is nothing more than the two sailboats moving on that cylindrical earth, and the axis of the propeller is the cylindrical earth.. if sailboats can move faster than the wind, so can this... but I have to agree that that analogy and reshaping earth is the stroke of genius.

"If the Earth were a cylinder...", hey, don't give them any ideas!

@muhammadhassaan4339

2 жыл бұрын

you got my like 💀 we don’t even have to say who “they” are we just know 😂

@THESLlCK

2 жыл бұрын

Don't worry we're already at donut earth theory

@Milesco

2 жыл бұрын

@@THESLlCK : Mmmmm....donuts! 😋

@StinkyScript

2 жыл бұрын

elon musk: *interesting*

@himanbam

2 жыл бұрын

@@THESLlCK Maps on donut worlds need 7 colors. As opposed to maps on spheres that only need 4. So to know what shape the earth is, get a map and count the colors.

"Vacum". Lower pressure in front, because air flows faster in curved side of propeler. Like a airplane wings.

GREAT video great man build this Idea, as a aerospace engineer always wonder there is wind 🍃 flow with great amount of kinetic energy and this says and this concept explains it well and the propeller too

that idea of the cylindrical earth and two sailboats being like a propeller was genius

@someting9205

2 жыл бұрын

Yeah, just like flat earth right? Or climate change.

@anthonygordon4515

2 жыл бұрын

Just change your name to “that guy” after that

@someting9205

2 жыл бұрын

@@anthonygordon4515 no im THE guy faking ur moma

@someting9205

2 жыл бұрын

@Kian Woods ikr these people believe anything. If this channel make a video about flat earth all you brainless would buy it lmao

@arck4453

2 жыл бұрын

@@someting9205 I mean, I'm not a physicist, so idrk. But, you could also share your opinion instead of that free hate.

"It's a little unbalanced, isn't it?" The entire propellor threatening to crush down on Derrick

@ZaiyadR

2 жыл бұрын

Very British of him, despite not being one

@InvadersDie

2 жыл бұрын

@@ZaiyadR BRI'ISH

@qzbnyv

2 жыл бұрын

@@ZaiyadR Is a fellow Aussie though so close enough! As are his kids now

@wow-roblox8370

2 жыл бұрын

@@InvadersDie that’s northern English. Not southern English. It is pronounced British

@WilliamPitcher

2 жыл бұрын

I watched a couple of videos on why wind turbines have three blades. I feel like this vehicle needed a three-blade prop.

Unbelievable. Well done. This is fascinating.

It's like paddling a canoe with the current.

@vincentkosgei7166

Ай бұрын

You are adding an additional power by padding,

This broke my mind until you showed the sail boats in a cylindrical world. The creator explained it the best way, your addition of the animation helped tremendously. 👍🏼

@weirdlingweirdo1058

2 жыл бұрын

The wind drove the sales on the cylinder earth but the wheels drove the propeller to push against the wind. Sales don't push wind and they used a propeller like a plane trying to take off going in the same direction as the wind.

@mgutkowski

2 жыл бұрын

It's also a complete red herring if you pay attention to the direction of rotation. It's a prop, not a turbine.

@Sp00ns655

2 жыл бұрын

@@Goblineng they said in the video that the wind pushes the car, and the wheels drive the prop, but its geared up to make the prop spin faster, which to me seems fake because that would be a perpetual motion machine

@weirdlingweirdo1058

2 жыл бұрын

@The Ardent J so, the wind is pushing the vehicle the same way a plane is blown on when it faces with wind and turns on it's propellers to start moving faster than the wind.

@sikolikhole

2 жыл бұрын

@@Sp00ns655 the creator says it's a prop. The wind doesn't push the vehicle the whole time, it helps turn the sails into a prop.

“Is it safe? It feels makeshift.” The hallmark of any proper, reliable machine.

@notmilandia8461

2 жыл бұрын

It looks very Mad Maxesque.

@celebrim1

2 жыл бұрын

What real science always looks like.

@fedbia2003

2 жыл бұрын

@@celebrim1 Lmao, that's true.

@guotyr2502

2 жыл бұрын

Sounds like progress to me

@radialbladeworks6183

2 жыл бұрын

*Mercedes drivers getting behind the wheel of a BMW*

I want to see a new version of that thing built that would be sick!!

Oddly enough, this actually feels really intuitive to me. Maybe you just explained it super well, but it just makes sense, haha. Super cool!

i was following this internet debate like 15 years ago, when it spanned three different message boards, including 30 maxed out threads at talk rational. i can't believe it's still going on. that fight was BRUTAL

@cosmologicalturtle9528

2 жыл бұрын

Imma be honest, I’m still completely lost on how this works. When the craft is going at the speed of the wind, isn’t it’s perceived wind 0? In which case, how is it able to be powered by the wind if it feels no wind?

@milesgould8288

2 жыл бұрын

@@cosmologicalturtle9528 the propellor is being driven by the wheels, which are being rotated by the vehicle rolling over the ground at nonzero speed.

@billiondollardan

2 жыл бұрын

I hate to upvote this comment because your username creeps me out! LOL

@BenJamin-rt7ui

2 жыл бұрын

@@cosmologicalturtle9528 If feels a net headwind. In which case why not just turn the thing around 180 degrees into a headwind? It should move forward, thus proving the point more easily.

@thijsschipper7740

2 жыл бұрын

@@BenJamin-rt7ui I think it's because the cart needs to be rolling for this effect to work, hence it has to be downwind to get its initial momentum

the two boats on a cylinder acting like a propeller! That's amazing

@dinosaur8150

2 жыл бұрын

Right!

@8megadeth666

2 жыл бұрын

5 feet apart

@AMIRULHAQE

2 жыл бұрын

yes that was incredible

@rtmordecai1

2 жыл бұрын

Physicist: How do I figure out how this works? Oh right what if the earth were a cylinder? Us: wtf?

@Abdullah-yq7jp

2 жыл бұрын

New plots/mechanism for sci-fi Wish I was creative enough for it though

You did a fantastic job explaining how it works. Makes perfect sense. 😉

@user-bi6iw9ng8j

6 ай бұрын

wheels rotate propeller that pushing wheels faster? ) it is not explanation... it is well known perpetum mobile

I feel like the fan analogy he uses says it most simply. Imagine an electric fan blowing the car forward. In this case the fan is powered by the cars wheels moving over the ground rather than electricy. Move forward motion gives more fan power. The wind just gets you going and keeps you going when friction would want you to slow down. So does the raw wind power have to at least = the resistance of the vehicle for it to work? I think it does.

@DavidFritzIII

Жыл бұрын

They also mentioned that the need at least 10 ( mph or kmph? Both units were used in the video but kmph in the explanation) wind for it to work. That is certainly needed to overcome the static friction of the whole system.

@joeturner7959

3 ай бұрын

Brilliant. I never thought of rolling down hill! Great!

@normvargas2799

2 ай бұрын

I think you are right. The first run just equalled the friction of the car and maintained a steady speed. Any wind speed above that would be the faster than wind demonstration.

So this is basically, "This one trick will make your *Air Propelled Vehicle* go faster than the surrounding wind. Scientists HATE him!" But it works.

@josiaserad6574

2 жыл бұрын

you mean redditors

@raffibags

2 жыл бұрын

Intense skepticism and hate are very different things. Skepticism helps fuel the crucible in which new science is forged. If an idea makes it out intact, it’ll be lauded - not hated.

@inverlock

2 жыл бұрын

@@josiaserad6574 it’s a reference to internet advertisements trying to scam people

@saucerset12

2 жыл бұрын

Awesome!!

@TheGrinningSkull

2 жыл бұрын

@Hope Beattie nice pun

The sailboats around a tube explanation is genius!

@josephilip2136

2 жыл бұрын

I didn't get that. But I got his explanation

@richardbloemenkamp8532

2 жыл бұрын

Maybe, but to me it has little relation to the experiment. Also I miss an explanation how a sail boat can beat a balloon straight down wind. There are no wheels and chain driving the prop or sail.

@aspen9273

2 жыл бұрын

@@richardbloemenkamp8532 it's talking about the idea of lift providing thrust, much like the propeller blades. Those examples were the proof of concept for the theory that led the creators to buold the vehicle

@Dziaji

2 жыл бұрын

But it has nothing to do with it because he said the wheels power the fan, not the other way around. This makes no sense and the video is garbage. The wind simply slowed down while he was riding.

@AlloyDiesel

2 жыл бұрын

@@richardbloemenkamp8532 Thank you! I am in the same boat. ⛵. I don't understand why the wheels are driven. You could essentially replace a sail with this prop and drive a boat faster than wind, so.. wheels don't seem to need to be driven. I don't buy the argument that the craft moves just because it is a bluff body either. It moves due to thrust created by the prop.

That's so good! I'm going to discuss it with my physics teacher for sure!

Just when I understand and master the basics Derek has a way of blowing my mind.

Here´s a civil comment: This is scientifically possible. There are no laws broken here. Keep up the good work!

@johanmedrano1924

2 жыл бұрын

Here's an uncivil comment: Goku would beat him.

@checkboxxxproductions

2 жыл бұрын

@@johanmedrano1924 loooooool

@thedude6058

2 жыл бұрын

@@johanmedrano1924 x to doubt

@johanmedrano1924

2 жыл бұрын

@@thedude6058 dude, dont get me started 😂😂😂

@thanosmom9118

2 жыл бұрын

@@johanmedrano1924 Saitama is way stronger than Goku.

"It's like a coffin Shoddily put together" - total Savage to say that right in front of the builder and owner

@KrolKaz

2 жыл бұрын

Yes let's not say sa*age.. it has racist colloquium for many colonized cultures throughout the age of discovery.

@EnderBOT122

2 жыл бұрын

@@KrolKaz damn bro, you're savage

@michaelm1573

2 жыл бұрын

@@EnderBOT122 at first I thought he was joking but it looks like he flagged my first comment. It's crazy that people give power to these words go look up the word Savage in a dictionary and get back to me man people are ridiculous

@fumotomo

2 жыл бұрын

@@EnderBOT122 thanks cirno

@EnderBOT122

2 жыл бұрын

@@michaelm1573 i am extremely racist

The best explanation here I think is the sailboat example when introducing Lift. A plane takes off and gains vertical velocity with 0 (relative) wind in the vertical direction. It is gained solely from traveling horizontally down the runway. Because the wing can deflect horizontal air downward. That is what is happening here. At exactly wind speed, the propeller is still rotating. It is moving perpendicular to the air collecting the air particles and deflecting them backwards.

the same way that the sail, at an angle to the wind including the positive mass inertia propels it faster than the air. the propeller does for the vehicle

That shot when the man is standing clearly showing the wind s blowing opposite to what the piece of string is showing on the blackbird is ICONIC!

@GregHassler

2 жыл бұрын

16:31

@DonVigaDeFierro

2 жыл бұрын

That's one for the books.

@DaFlameGamers

2 жыл бұрын

@@GregHassler 16:28

@Rishi_CA

2 жыл бұрын

16:21 the tail moves backwards ☝🏼

@initialb123

2 жыл бұрын

Hope there was a nice shot of it from a camera guy in teh follow car , so he can get it framed

Several times throughout that video I was like, “oh! That makes sense, I get it now,” only to be like a few moments later, “ah? Yeah, I don’t get it anymore.”

@WilliamPitcher

2 жыл бұрын

Just sitting on the cusp of understanding is frustrating too. I think I would have been lost if I hadn't already learned that propellers are like wings.

@jcims

2 жыл бұрын

Same. It's a very slippery concept. I'm just glad these guys were able to hold it together long enough to build it.

@frostburnspirit9065

2 жыл бұрын

nothing made sense to me

@Yora21

2 жыл бұрын

I still don't actually understand lift to this very day. But it's what makes planes fly and ships sail faster than wind, which is happening everywhere every day.

@EmeraldLavigne

2 жыл бұрын

Ditto & I wound up at "I don't get it anymore," at the end of it all.

I think the best analogy was the sailboats on a tube(shaft). I totally got it when you put it like that. I just didn't think the blades were big enough to work. That being said, with balanced, possibly bigger blades and a better (more expensive/professional structure), this would be better proven. It would definitely produce better results.

@Rick_Cavallaro

Жыл бұрын

It already has been very well proven and provided much better results. I've had it up to 54 mph with no hint of shaking. The propeller blades were not out of balance, but had mismatched pitch that day. I hadn't even seen the vehicle in more than 10 years, and it was decided that we didn't have the time that day to make those adjustments.

This vehicle is for sale on ebay motors right now for $2550. Hopefully it goes to a good home or is donated to a museum.

Derek: "How can I halt this thing? Inventor: "You must figure it out by yourself."

@paunstefan1

2 жыл бұрын

The halting problem.

@virutech32

2 жыл бұрын

Derek: yeah sounds legit, lessgo

@cheesus8594

2 жыл бұрын

@@paunstefan1 a Turing complete vehicle

@AnonymousMycologist

2 жыл бұрын

@@paunstefan1 You made me laugh. Thanks :)

@Reisboy_PhD

2 жыл бұрын

best answer ever

This takes "someone was wrong on the internet" to a whole new level

@PistonAvatarGuy

2 жыл бұрын

These guys are living my dream.

The way I would explain it is once you reach windspeed the prop starts counteracting the wind coming from behind and starts acting like opposing magnets, the props thrust is pushing against the natural thrust of the wind from behind

Excellent conclusion with the great explanation - the internet meme that started it all dates to 2003 no less :-] (yes, pretty much all of my back-friends thought this was a no-brainer and it won't happen - all except one, not me, sadly, though, he was simply open for the possibility, not trying to figure out why/how). As far as my opinion was back then - I had far more important things to address at the time, but I do remember the lively forum discussions and dozens of attempts at untangling the dynamics. I remember one in particular that claimed that the rotating propeller doubles as a sail of sorts - forgot the original source or the name, but turns out that opinion was at the beginning of the right track. Thank you for sharing :-]

@rcgldr

2 ай бұрын

The power source comes from the difference in speed of wind and ground. From the vehicles frame of reference, the earth's surface is moving towards the vehicle, and energy is extracted from the earth by slowing down the earth (relative to vehicle) by a very tiny amount, and this energy is used to drive the propeller.

The sail boat metaphor was really clear, everything just clicked for me after that.

@0masuk0

2 жыл бұрын

If you trust the intial claim that the sailboat can go faster than a wind in a direction of a wind. Sidewise - sure. I do not think projection of a velcity on wind direction is able to overpass wind velocity. Also this analogy doe not do work on why mechanical connection with wheels is necessary. (Actually with boat reaction of an ocean to board pushes boat forward too, and this is discarded).

@poikoi1530

2 жыл бұрын

@@KINGJERMARCUS tf

@ttrreebboorr22000066

2 жыл бұрын

@@0masuk0 as someone who sails I can say it truly works that way. Probably makes this whole thing a lot more intuitive, too.

@970357ers

2 жыл бұрын

@@0masuk0 Did you watch the whole video? The balloon Vs tacking sail boat thought experiment was discussed in detail.

@akunog3665

2 жыл бұрын

@@0masuk0 a good sailboat can go downwind faster than a balloon by clipping. Also, imagine the speed of the blades of the turbine/fan on the car. The blades are moving much faster than the wind, just not in the same direction. The movement of the blades is analogous to a sail boat clipping the wind at some angle (angle is controlled by the left level in the driver's seat). This speed is transmitted to the wheels. It's a bit odd for sure.

Engineering: Assume some values to find solution. Engineer: Ok then, let's assume earth is a cylinder.

@dashmeetsingh9679

2 жыл бұрын

flat earth would have been so intreseting

@carpdog42

2 жыл бұрын

@@dashmeetsingh9679 A good analogy is worth its bits in bitcoin.

@sheumack

2 жыл бұрын

@@dashmeetsingh9679Getting flat earthers to imagine the Earth as a cylinder is a step in the right direction.

@poikoi1530

2 жыл бұрын

@@sheumack now that you mention it

@MMallon425

2 жыл бұрын

When he pulled out the "if the Earth was cylindrical..." scenario, I knew he wasn't just some weirdo in a garage. Mad scientist, maybe, but it takes a certain level of creativity to imagine something like that.

As you stated the hole ship is the sail. The secret to speed is in direct drive gear ratio with ground. Wind pushes cart, wheels force prop to spin just a little faster then the winds influence would have had just act like wind mill.

That was interesting. It's not counterintuitive from the frame of reference of the vehicle. And that's where most of us fail to understand either the fullscale model or the one on the treadmill, because we keep looking at it from the frame of reference of the observer standing next to the vehicle.

Hope this video doesn’t become foundation of the Cylindrical Earth Society

@fatrockets4555

2 жыл бұрын

"you globetards will see the light of the tube one day" or something

@upublic

2 жыл бұрын

if we start it now and keep it floating long enough, someday even the elon musk will "invest" in it

@benderrodriquez

2 жыл бұрын

The flat earth society is obviously government controlled opposition trying to distract you from realizing the earth is a cylinder!

@fltchr4449

2 жыл бұрын

@@benderrodriquez It all makes sense now. The debate itself is the distraction! And all the physics fits!

@redacted483

2 жыл бұрын

Yeah because we all now the earth is a dragon

I felt the most happiest for the guy who dreamt this up, had the balls to share the idea and was then mocked for it, and called out as some kind of liar when showing a working model. Vindication feels good. Those are the types of people that push technology forward, by not caring what others believe, believing in their own ideas and just doing it. Bravo Sir!

@jasoncentore1830

2 жыл бұрын

I'm glad it worked out, people love to mock and call people crazy for new ideas. Look at all the famous inventors, etc lightbulb, cars, phone, etc... These were all "Nuts" according to people that don't want to understand. Einstein and several others were deemed crazy, I wish they were alive to say FU.

@kt.7257

2 жыл бұрын

@@jasoncentore1830 one more of Thor's people that was mocked was Nikola Tesla

@Rick_Cavallaro

2 жыл бұрын

@@kt.7257 Unfortunately Tesla was both a genius and a crackpot. He deserved both the adulation and the mocking at times.

@spider0804

2 жыл бұрын

Welcome to science and going against the grain where you are ridiculed and derided for years and years until you can prove the concept or give up and live in shame. Science is great, people are not.

@peterisawesomeplease

2 жыл бұрын

This is misleading. The first of these was built in the 60s and it's a mildly popular physics puzzle. The comments are mostly just people trying their best to understand.

Just needs another sail to get the initial push. Guess it would have to be able to be disengaged once you are approaching the tailwind speed.

Looking at a sailboat, it's direction of travel is (neglecting drift here) determined by the hull's heading. For every meter the wind pushes the sail downwind, the boat must also travel x meters (depending on the heading) perpendicular to the wind. This is even more true for a land sail vehicle, which has practically no drift. The same happens with the fan-car, for every meter forward travel of the blade, the blade has to travel x-meters perpendicular to the wind direction. (In this case, in a circular path, instead of a linear path, nonetheless traveling in a plane perpendicular to the wind). The gear ratio between the wheels and the blade determines how much perpendicular travel will happen for each downwind meter traveled by the 'sails'. So with the correct gear ratio and with low enough drag, it is possible to have a velocity made good of the blades that surpasses the wind speed.

"To steer, push back on forth on one of the levers. To stop, pull on one of the other ones. Probably" --The Designer, probably

@E1craZ4life

2 жыл бұрын

If I ever made a steerable sled, I’d have the steering be controlled with two cords; pull one or the other to steer, and pull both together to brake.

@thehatred94

2 жыл бұрын

@@E1craZ4life i believe the point is to NOT brake too fast. So if you're going faster than the wind, you want to slow down rather than hit the brake, less something break or you tople over. Hence why you need to turn wichever direction make you slow down more. But that all was probably mostly humor. Just turn a direction and proceed to slow down is the thing to do... less it's an emergency and you're better off toppling over.

"I expect a lot of pushback in the comment section" The whole comment section: Wholesome appreciation of this marvelous phenomenon.

@liambergstrom8183

2 жыл бұрын

But a lot of downvotes on the video

@simonci5177

2 жыл бұрын

Design Flow! It's wrong turbine. Instal Vertical wind turbine instead horizontal. THAN It will create power on wind from Any direction. From front or back of the car... or even side of the car...

@WunderWuzzii

2 жыл бұрын

@@simonci5177 The prop is not used as a turbine, but as a propeller/fan. Wind pushes the vehicle - wheels start spinning and power the propeller - wind can push the car to windspeed - propeller "uses" the sailing trick to get the car faster than windspeed. That's why this only works with tailwind.

@larsdahl5528

2 жыл бұрын

Perhaps we can use that pushback to type comments faster than... Uhm...

@WanderTheNomad

2 жыл бұрын

@@simonci5177 I don't know about other people, but I tend to dismiss comments that are copy-pasted across multiple comment threads, no matter what the content of the comment is and whether it's done manually or by a bot.

19:05 This I think is the best and simplest explanation why this vehicle is not breaking the laws of physics. It's using the energy of the wind which the propeller slows down to drive the car forward. The other thing you need to understand is the basic principles of a propeller. The force generated by the propeller blade has two components. One is backwards and the other component is in the turning direction of the blade. The force in the turning direction has to be generated by the wheels. But this force is smaller than the backward force (which indirectly power the wheels). So it's really just a question of building an efficient enough construction when it comes to rolling resistance, propeller design, losses in the power transfer from the wheels to the propeller and aerodynamic drag. And I can imagine if for example NASA or an F1 team would go all in on this, they could probably make a vehicle that achieved highway speed with very little wind.