Aerodynamics - demonstration

[@elismith4040]

"I've done the improved version where it then goes invisible.... anyway." Lol

[@katlegokgonkwe2410]

That's the time I died 😭😭💀💀🚶🏾‍♂️

[@James-eo6bu]

Not really that funny at all

[@joeoteah1072]

He had that one loaded and ready to fire 😂

[@rafaelc.s167]

@@James-eo6bu thanks for ruining it 🤡👍

[@BilalKhan-ng3ex]

@@James-eo6bu it was a nice chuckle

[@haris.saputra.]

Physics is actually so much fun. If only when i was still in school , my physics teacher could taught as fun as you did

[@sailaab]

if wishes were horses.. i would fly

[@jhay_mstv6331]

Sana all

[@juice1371]

It's because this is dumbed down for elementary school show and tell. Vectors and forces are simplistic but many ignoramuses in society couldn't stay awake for 5 minutes.

[@ScubaShark--8964]

@@jhay_mstv6331 *_Shut 🦢👌_*

[@bimoanggoro9612]

Setuju

[@DrDherp]

Careful not to confuse lift due to the shape of the wing (which I believe is what you are trying to demonstrate) and lift simply due to angle of attack. You'll notice that if you create a flat wing, maybe just a cut of ply wood, you will still achieve lift with the high angle of attack you are using. This has nothing to do with Bernoulli, just force balance. You can do the same thing sticking your hand out the window of a car and adjusting the angle of attack.

[@BiswarupRay]

That is how kites fly.

[@stephensowell9578]

Thanks, Tom, I noted the AOA of the blue & yellow wings and thought the same.

[@wp0049830]

So is it Newtons third law or Bernoulli's equation that makes a plane fly?

[@roykey3422]

I read a respond in the Smithsonian magazine years ago from someone who said he was a former air force pilot. He said you could make a barn door fly if you applied enough power to it and had a sharp enough angle of attack.

[@BiswarupRay]

@@roykey3422 of course doors fly when they encounter tornadoes

[@genius27641]

Matt always seems to pop up on KZbin in random places. Ive never heard him promote this channel before

[@mmert138]

Who is he?

[@rajinfootonchuriquen]

@@mmert138 a guy who do math.

[@faielgila7375]

@@mmert138 the Stand-up Mathematician

[@Its_BM]

@@mmert138 the guy from Discovery channel's You have been warned show

[@damianocalia1612]

@@Its_BM lmao yes I remember him 😂

[@harly1978]

That angle is too high to demonstrate Bernoulli's Effect

[@freshapple920]

Exactly, angle btw flow of air and plane of wing is large , here upward force is exerted because of one component of momentum of air not because Bernoulli's , there will be large horizontal force on wing too and that opposes forward motion of plane.

[@snijdertkswr]

Yep flows not attached

[@AkashPawar-zp1oj]

@@freshapple920 in reality, a partial vacuum is created with very less air molecules spread on top of wing, whereas under the wing in less area, many Air molecules get accumulated. Both are given a downwash, but due to vacuum above ,the molecules on top, are going back and try to stick to surface where a vacuum is created(coanda effect) but can't, and do a downwash. Now there's a pressure difference on top of wing and below the wing , and this pressure difference makes air above move faster and hence generates a lift. Please see if this answer is correct.

[@freshapple920]

@@AkashPawar-zp1oj thats what bernoullies principle is but in diff words 😂

[@AkashPawar-zp1oj]

@@freshapple920 thanks bhai. I'm still learning, need to learn more. Can you please put all this in brief, Very crisp and to the point?

[@saileshdas2877]

Who else saw this man on Discovery channel is a legend

[@wingnutzster]

You’re actually making the argument for lift coming from AoA more than Bernoulli

[@skylark4901]

Okay, I think I have everything I need to know to start build my own personal aircraft, wish me luck!

[@priyanshamarchiya2529]

I remember him from that discovery show YOU HAVE BEEN WARNED

[@SPTN48]

Me too

[@sorcelord65]

Good look getting this education in American schools. It’s turn to page 307 and read and take your test after............Ms.frizzle was the best teacher ever.

[@klausbrinck2137]

Don´t worry... By now, Europe is already fully Americanized, and it´s the same shit here too... Thanks a lot, by the way...

[@aidansvoboda5479]

Great video! I would be careful with citing Bernoulli in this situation. Bernoulli can really only be applied along a single streamline, and thus it can not be directly applied when discussing airfoils. The velocity to pressure relationship is not as direct as implied by Bernoulli.

[@kabirsk4266]

he teach me airplain flying concept in just 3 sec

[@user-fp5co6qn7h]

If only he could teach you proper grammer. (Its a joke plz dont get offended 😜)

[@gustinar-i5b]

@@user-fp5co6qn7h so, what is the correct one ? Im curious

[@gustinar-i5b]

@@user-fp5co6qn7h is it " He taught me about airplain flying concept in just three second" ?

[@samdashtu2212]

"He taught me about an airplane flying concept in just three seconds"

[@beaclaster]

you teached me death stroke in 1 sec

[@shabbirbasha703]

This man has been worked in you have been warned tv channel

[@warmachineboats5697]

My favorite programme on discovery....

[@Ewr42]

"dangerously close" yeah Like Parker's square close

[@vishaldeshmukh8842]

*In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738. From wikipedia*

[@parkflyerindonesia]

Similar to what I've been teaching elementary and mid students 😊👍 welldone!

[@nigelmaccuver9122]

👉🏻👉🏻 The principle is that “Velocity increases and pressure decreases” As the airflow increases on top on the blob pressure decreases it creates vacuum and air pressure beneath the blob rises instantaneous to fill in the void so it lifts up, so does the wing of a plane, etc.

[@SagarThosar-s6c]

What's scarry is : " He can do this all day." 😂

[@dirkgibbens377]

At 1:14 he says it exactly backwards. You get higher *velocity* over the top of the airfoil, not higher *pressure*. As velocity increases, pressure decreases. The lower velocity below the airfoil results in higher pressure which produces lift

[@gjohn163]

How would the velocity be lower below the airfoil?

[@dirkgibbens377]

@@gjohn163 On a cambered airfoil, such as an airplane wing, turbine blade, etc. let’s say the leading edge is point A and the trailing edge is point B. Due to the camber the distance traveled along the upper surface is longer than that of the lower surface. So the molecules on the top of the wing have to travel faster to get from point A to point B, and the molecules on the underside of the wing travel slower to get from point A to point B

[@gjohn163]

Yeah I can imagine that, but surely the pressure difference from the velocity difference on either side of the airfoil is small and won't generate any lift... I might be wrong though

[@dirkgibbens377]

@@gjohn163 Its basic aerodynamics. I am an aeronautical engineer. Trust me, its this concept that makes jet engines generate thrust and airplanes fly. Even though I understand the concepts it’s still hard for me to believe how it works. That’s why I have been fascinated with flight ever since I was a little kid and chose that as my profession

[@gjohn163]

Oh okay... I saw somewhere that it wasn't necessarily speed differences but more to do with circulation generated from the incoming velocity vector field... I'm trying to figure out where it all fits...

[@ZAR556]

the mechanism is simple yet practical,, even crash-course pilot can fly a plan

[@mcrsit]

Lol a wild young Matt has appeared!

[@georgemichelakis1202]

Its actually because the air at the bottom has more contact with the bottom of the wing than the top due to the wing's curved design, and also because of the wing's tilt upwards, the air applies more force at the bottom than the top.

[@Omp9090]

Oye gracias fue muy útil Hey thanks it was very helpful

[@SauravKumar0404]

He's Matt Parker & he's in YOU HAVE BEEN WARNED on Discovery..

[@sanpol4399]

The wing generates lift not because the air flows faster at the top, this faster flow at the top just make it generate more lift. If that was the reason lift was created, a flat wing would never work, and it works .

[@oldman8584]

A flat wing works only if it is angled upwards so the front is higher than the back.

[@sanpol4399]

@@oldman8584 Exact. If the angle of attack is zero, the flat wing does not generate lift 👍🏻👍🏻👍🏻

[@johndionisio9192]

@@sanpol4399 It's not the point here, the main producer of lift is the angle of attack not bernoulli.

[@sanpol4399]

@@johndionisio9192 I did not get what is not the point. Could you clarify what you mean ? 🙂

[@OmkarPatil-ch7fz]

He is from that show on discovery “You have been warned " .

[@ronaldluning4010]

Need to have no angle between the bottom of the wing and relative wind, (air compresses, the wings at an angle therefore air hitting the bottom of the wing....), to prove bernoulli.

[@pemainpesgratisan6392]

Physics teacher now : “ok class, i give you a question about how much time needed for a flying elephant to go to Africa from America but the elephant was made in China. Give me your answer before 10 o clock.” Ten minutes ago before 10 o clock.

[@skaibuana4115]

Sorry repeat ur question Sir

[@kisshorekumar4331]

@@skaibuana4115 I can't tell if u are being serious or joking😂😂

[@deanmoncaster]

I'm not so sure it's higher pressure on top that caused the lift as it is the fact the wing was shaped to capture the air and push it down which caused the lift.

[@enbinzheng-line]

Many pilots, although capable of piloting airplanes, do not truly understand lift. Simply put, lift is as follows: Assuming our Earth is an ideal sphere with no friction or atmosphere on its surface. We also have an ideal small ball placed on the surface of the Earth, which will exert pressure on the Earth due to gravity. If we move the ball in one direction along the Earth, we will find that the faster the ball moves, the less pressure it exerts on the Earth. When the speed of the ball reaches the appropriate size, the pressure of the ball on the Earth will be equal to zero. Why? This is because the surface of the Earth is curved, and when a small ball moves, it tends to move away from the Earth's surface along the normal direction of the sphere. That means the ball is trying to leave Earth. However, due to gravity, when the speed of the ball is relatively low, it cannot reach Earth. But the pressure of the ball on the Earth will be reduced. Lift is also the same. When air moves along the upper surface of the wing, due to the curved surface of the wing, the air also tends to move away from the upper surface of the wing in the normal direction, so the pressure of the air on the upper surface of the wing is reduced (similar to weightlessness). So there is also lift on the surface of the wing. Of course, the lower surface of the wing also generates lift, but the lower surface is opposite to the upper surface and can cause overweight, resulting in pressure higher than atmospheric pressure. This also contributes to lift.

[@pankajsingh9thb774]

1:33 "I could do this all day" - Captain America

[@captainshipman7377]

Interestingly, In wind tunnels air clearly goes faster on top of the wing but experimental evidence actually shows that in real life with a moving wing in still air, a parcel of air under the wing will reach the trailing edge first. The problem people get confused with Bernoulli’s principle is cause and effect. Fast air doesn’t create lower pressure on the wing. It’s actually the wing that causes lower pressure. It is this Pressure Gradient Force (PGF) which causes air to accelerate, as it has mass and nothing will move without a force. Where does this low pressure come from? Likely due to the fact that an angle of attack causes the top of the wing to be deflected away from the oncoming flow, but due to air’s pressure and low viscosity it will adhere to the wing’s surface. Air curves around the top of it, meaning that there must be a force causing it to take a curved path instead of move in a straight line. That is also caused by the pressure gradient force.

[@billy7320]

A question for you geeks. About nails and aerodynamics, not the one on fingers or toes but the one carpenters use. The question goes as follow: What direction will a nail fall if you trow it say, from the Eiffel tower, will the hammer head be down, or will the pointy tip be down?

[@BiswarupRay]

The hammer head will act like a parachute obviously..

[@pmj_studio4065]

That's... a very good question. The center of gravity it closer to the hammer head, but where is the center of pressure?... Actually I'm not sure if there's any stable orientation 🤔

[@shock1136]

Physics or Aerodynamics is not my major but I got very fascinated about it in my secondary school(high school) and read about it. Whenever I use superman, man of steel to help people visualize a sonic boom, they take it as a joke lol and that was before I saw videos of jets breaking sound barriers with ease lmao

[@kpopparapakyaw678]

This is why I want to be a physics teacher. Explaining hard shits on students on a comprehensive level

[@oldman8584]

I thought Sir George Cayley in about 1850 demonstrated how a wing would creat lift. He even made the first heavier than air flying machine. Unfortunately there was no efficient engines to power it. We had to wait for the Germans to invent the internal combustion engine some years later.

[@UtSlpilot]

I always include the simple statement teaching aerodynamics: “Lift is produced as a perpendicular force to the wing surface.”

[@makchel21]

Yes physics is so much fun. So much fun that i need to repeat it a few times in college. 😅

[@jonnevitu4979]

boo

[@pierQRzt180]

Matt "squared" Parker attempting things again. Dangerously close!

[@dhanesh7523]

Is this the guy from the show 'You have been warned'??

[@debasishborah1787]

Reminds me of You have been warned. Ahh! What days were those.

[@rochditidjani]

Excellent demonstration.

[@larsalexander3200]

Is it just me or could you guys too feel the wind with the sound of the second model?

[@shahidmeir7379]

Mistake . You are supposed to use laminar flow of air. That fan produces turbulent flow,

[@jeswantg1317]

Everyone: Hey! Its Matt Parker Me: Hey! Its the "You Have Been Warned" guy.

[@solapowsj25]

Needs Teflon coating to reduce air friction. Or ion thrust layer over the wing and body surfaces to reduce friction to zero.

[@Nayansinghmusic]

This dude should feature on You've been warned.

[@son0fhobs-again]

That shows angle of attack much more than aerofoil effects. Bad explanations meant I never properly understood aerofoil lift until i was an adult and looked it up myself.

[@AJ-fo3hp]

Nice thing, I am searching this kind of example, thank you very much.

[@aduhi43]

POV : youtube randomly recomend this after 3 years

[@heimizhou450]

so good model

[@abdullahnazly]

Wonderful demonstration

[@sumanstephen109]

It's just the demonstration of Newton's 3rd law: Action = -Reaction. That same would have happen anything that obstruct that incoming wind. If he was trying to show how lift is generated over a wing, the explanation is not at all enough or covered.

[@DangerAngelous]

Hey it’s one of the guys from Big Bigger Biggest edit I meant to say from Tom Scott

[@caitlynandrews5201]

Is there a place to purchase that airplane-on-a-stick demo? Or instructions on how to make something similar? I'd love to use that as a demonstration with my little kids without having to remove masks to blow over the top of a piece of paper.

[@abhishek_raj]

Physics is the reason I chose to do engineering.

[@warbot2544]

Physics is d reason ,I ran away from it

[@SArtisto1]

Dude: *Pops the center out by blowing across the top* Me, An Adult: *Gasp!* How u do that :o

[@akokohjoel9854]

Simple and powerful explanation. Good one

[@ChristianNorth]

@Matt Parker, where di you buy the little wing you had at the beginning? If you made it, is there any plans online to build one? I am just looking for the dimensions and scale, thank you

[@bineetpradhan788]

This is better than pages of physics text with scary mathematical formulae which normal folks like me could never understand 😀

[@clarkkent4872]

Nice demo for AoA, but not Bernoulli's effect. You can have a symmetrical wing and still gain lift if sufficient AoA is there. Bernoulli's play a very small role than AoA.

[@t21mharyan71]

I guess i have seen this guy on show on discovery channel called "you have been warned" 🤔

[@insider235]

Where can I get the ball in the wooden cup experiment?

[@andreashabeck1155]

That angle of attack is making me unkomfortabel

[@raunakrahangdale9019]

Wait wait , have I seen you in ' You have been warned'

[@jonnyueland7790]

Its not Bernoulli that makes the plane fly, Its Newton.

[@gpaull2]

At the moment 94 thumbs down actually know that the lift was achieved with angle of attack in that demonstration, and 3k thumbs up are once again fooled into the outdated theory of flight that Bernoulli’s Principle is the only lifting force acting on a wing.

[@johnvarshit7201]

He is the guy from you have been warned

[@ganazpaker1662]

1:31 he says : i can do this all the day... then captain america : yeah i know... i know...

[@tonicrvnts]

1:01 "faster over the top..." Wow! I got it wrong! I thought the curve on top did the air go slower and have less pressure and that caused the lift.

[@Bendigo1]

Think of it as a race track going around a corner. A person running on the outer lane has to go faster to keep up with the person in the inner lane. If you have 5 people in the outer lane and 5 people in the inner lane running at the same speed in the straight stretch and only when the curve begins does a runner start going faster, each time a runner starts going faster they will separate from the others in their lane. That separation is a simulation of the drop in pressure over the top of the wing.

[@gilgameshlfx7006]

What kind of sorcery is this?!

[@roscoepatternworks3471]

There has been an argument for years as to what causes lift. Angle of attack or shape of wing. Although not great I have flown rc aircraft with different airfoil. A flat bottom with an increase in speed will gain altitude. Flying inverted is hard, a lot of down elevator required. A semi symmetrical airfoil will do the same, just not as fast. But flying inverted is easier. A symmetrical airfoil will not increase altitude with speed. Flying inverted ther was little to no change in trim to maintain level flight. In all cases a change in angle of attack effects the attitude of the aircraft at a given speed.

[@Octavarium666xyz]

Good observation. Flat bottom airfoil has positive camber to it and will generate lift even with zero angle of attack which means that when you fly inverted you need to first use elevators to negate the lift created by the now flat top wing and then more elevator use to create angle of attack over the wing that will create lift to carry the aircraft. Symmetrical airfoil is essentialy the same as flat plate wing and it won't generate any lift at zero AoA. But as you said the inverted flight is then easier.

[@MigaraPeiris]

This is exactly what we did at physics lab at school. We couldn't build the model correctly hence didn't performed the against the wind. Anyway our team was smart enough to angle the wing so a force is build upwards, but it was not Bernoullie at all 😁. As the teacher was not paying much attention, we got marks 😂.

[@toyotahilux1831]

Ses dalganı da alıp gitmen gerektiğini ne zaman anlayacaksın acaba

[@wawanhermawan7596]

very good channel

[@dylanparker130]

loved this!

[@luismarcialvergaradiaz5363]

My proof that i managed to find the 1st comment before the idiots (ppl that are going to write repetitive jokes about youtube and recommendations) arrived.

[@alfredosalazar526]

I don’t understand why it’s the negative pressure on top of the wing that gives it lift? It looks like the angle of the wing pointing up gives it its lift?

[@DanksterPaws]

Try removing the curve at the top and turn it into a rigid straight line shape. Like a cardboard square. It wont fly

[@jayakrishnamishra5729]

Hey that's Woody from Toy Story

[@wp0049830]

So is it Newtons third law or Bernoulli's equation that makes a plane fly?

[@deltagnm9431]

Andai saja pbm fisika di sekolah ku seperti ini :).

[@shikhardwivedi9325]

Hey this man is from you have been warned!

[@adityad7272]

He's Matt Parker right ?

[@adityad7272]

I watch that show

[@debjit1375]

Ye was in a tv show named - you have been warned

[@drakeonyou]

I want this guy to explain why my marriage didn't work.

[@Bendigo1]

The fact that you don't know why is they explanation.

[@drakeonyou]

@@Bendigo1 I'm not married. This is supposed to be a joke. Sorry it missed ya

[@ratneshsharma414]

This is what i called it....ZINDA PHYSICS...😂👍🏻

[@acronyms5422]

I can do this all day!

[@christianmoon1068]

They have someone off frame lifting the plane

[@iiREYteoii]

0:41 that phrase activates my Google assistant on my phone wow

[@dharmendraprasad2835]

That's why he come in u have been warned show

[@mvschooten]

How can a plane fly upside down with Bernoulli's Effect providing the lift? Newton's third law is in play I believe, that would still work even if the plane is upside down

[@Octavarium666xyz]

Correct, if the wing has flaps to alter its shape to deflect air downwards while flying upside down then the wing will create lift force in upwards direction.

[@mvschooten]

@@Octavarium666xyz Doesn't even have to have flaps as long as the angle of the wing is correct. Plane flying upside-down is not in the same angle, 180 degrees opposite, as it will fly in normal position. This so the angle of the wing is providing lift making use of Newton's third law.

[@Octavarium666xyz]

@@mvschooten All wings will make use of 3rd law because all wings need to deflect air which acts on the wing and creates the lift force. However you can have airfoil shapes that will generate lift even at zero angle of attack, if you want to fly inverted with these you need the help of elevators to induce some angle of attack to generate upwards force with the wings, flaps on the wings can further help by changing the airfoil shape so that the wing doesn't generate the zero AoA lift that it is now pointing downwards. I am considering mainly the question how does an airfoil creates lift while upside down and I am not really taking the whole aircraft into account.

[@shivampatel1683]

Heyy!!! I know that guy... He's from discovery..

[@vedantpatel4336]

Yes he is from discovery show "you have been warned".

[@rabbitphobia]

Then how does a plane fly upside down?

[@Observ45er]

By making the air curve enough to produce lift.

[@rabbitphobia]

@@Observ45er No that's what the top of the wing does.

[@Observ45er]

@@rabbitphobia The pressure decrease above a wing is indeed the larger contributor to the top-bottom pressure difference that yields the net upward pressure difference. . For a symmetric wing the AoA produces a positive gage pressure below it and a negative gage pressure above. For that wing, there are similarly curved streamlines both above and below. . Some wings have a pressure decrease below also, but the decrease above is greater, yielding the top-bottom lift producing pressure difference. Understanding Lift Correctly: kzbin.info/www/bejne/aX62opWkl7B3o68

[@marcmortimore6750]

anyone know the profile of this airfoil and the angle he has there?

[@SonalShekharBhoi]

He's Captain Physics.

[@IkanGelamaKuning]

How does tony stark fly?

[@eidkooo3639]

young ozzy osbourne knows more than I expected

[@joewizy-fifaskiller1006]

“ I can do this all day “ 😂

[@VIJAYSINGH-el7su]

1:33 i can do this all day .....finally got the new Captain America

[@jaypanchal4854]

Previous generation's way to do CFD Analysis

[@mikelurban892]

How do demonstrate a fan turbine power?

[@harshalgotad2470]

Ohh I didn't knew Rahul Gandhi is so good at aerodynamics😂

[@JoseBarbosaa]

Muito bom gostei!