Understanding Aerodynamic Lift
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- čas přidán 16. 06. 2024
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Humanity has long been obsessed with heavier-than-air flight, and to this day it remains a topic that is shrouded in a bit of mystery. In this video we take a detailed look at lift, starting with how it is linked with the pressure distribution around airfoils. We also cover a few different explanations of lift, including the Bernoulli Principle and Newton's Third Law explanations. Circulation is a key aspect of lift that it is important to grasp to develop a more complete understanding of lift so that's covered too, as is the Kutta condition. Finally we explore how the lift force varies with the angle of attack of the airfoil (which explains why aerobatic aircraft use symmetrical airfoils), and how stalling can result in a dangerous loss of lift.
If you'd like to read more about lift I highly recommend the textbooks Introduction to Flight and Fundamentals of Aerodynamics by John D. Anderson Jr. The paper "Babinsky's Demonstration: The Theory of Flight and Its Historical Background" published by J. A. D. Ackroyd in the Journal of Aeronautical History also provides some interesting history around theories of lift.
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Thank you so much (I already own curiosity though, lol)
6:05 I understand your explanation of the what creates the lift force (i.e. a pressure difference due to velocity difference, according to Bernoulli's Principle)
but then...
6:30 I don't see why the fluid flow being "pinched" above the leading edge of the wing results in LOWER density/pressure? Instead, I'd expect this constriction of air molecules to cause HIGHER pressure?
6:42 I also don't see the connection with "Conservation of Mass" which you state, but don't explain.
7:08 Again, you state what the flow would look like without circulation but you don't explain why.
Conservation of mass means that for the same amount of fluid to flow through the constricted section, it's velocity must increase. And Bernoulli's equation tells us that an increase in velocity is accompanied by a reduction in pressure (conservation of energy).
@@TheEfficientEngineer Thanks for replying with an explanation, which helped me understand how Conservation of Mass applies.
I also watched another video explaining how wings create lift (by the channel Sixty Symbols) which I found helpful.
How circulation is relevant in this case remains a mystery...
@@GonzoTehGreat It's best to think of the air as a fluid. Also whatever the reason, it is the difference in pressure between the top and bottom of the wing that does most of the work. The various reasons, Bernoulli, Coanda or Newton, will have varying input depending on speed and angle of attack. Flaps only work at low speeds. At cruising speed they just add drag. Same with angle of attack. It took until computers became powerful enough to do the calculations for some of this to be unravelled, so its no wonder that it is still being argued about!
Edited for spelling.
As a fluid flows around the airfoil, it creates three different kinds of stresses: shear stresses, pressure stresses, and engineering student studying stresses.
I’m going to shamelessly steal this pun
Just the third one 😄
It also stresses laymen like me. I know that wings create lift. I still don’t understand why, though sometimes I think I do
Nobody understands why.
That’s why it’s called the theory of lift.
Even super computers only get close to quantifying it.
We only know what conditions need to be satisfied to create it, not the why.
@@Bartonovich52 Oh, I am glad to hear that! I thought it might be a shortage of understanding on my part. So, in essence, we have a description or the ‘what’ of this phenomenon, not the ‘how’ or ‘why.’ Thanks
I've been studying Aeronautical engineering for the last 7 years and I've been playing with some Aerodynamics projects for the last 2 years and I have never found a better explanation of Lift in the entire Internet, amazing job, clean and intuitive speech, wonderful animations and a solid theoretical background. My biggest congratulations for you man! You're Top engineering content creator, keep going!
Really? I thought we have proved that the lift is caused by the Coanda effect not the Bernoulli effect.
@@jackz1620 Coanda is just a small part that allows the boundary layer not to detach from the airfoil and produces a bit percentage of the lift with the downwash but lift is based mainly in pressure differencial by bernouilli effect
pitty it is not based on physics for all the benoulli version. See my comments above.
@@jackz1620 @Ignacio Trueba
Coanda does not happen above an airfoil. It is a jet or sheet of air, FORCED into an otherwise still air environment. There is continual entrainment. There is neither of those above an airfoil.
.
Using the "Bernoulli Effect" as commonly done is an equally incorrect way of explaining lift.
*Understanding Lift Correctly:* rxesywwbdscllwpn.quora.com/
Totally agree!
You always happen to upload the topics my uni projects are on at the time and i love it
Absolutely insane how I’m in the last 2 weeks of fluid mechanics and we’re doing external flow now, and this guy uploads precisely on lift 😂
be careful, physics and engineering are two different things! Still no one is certain on how an airplane flies!
@@rogerdodger8813 I would say people are certain on how airplanes fly, just lacking in certainty regarding deeper issues relating to CFD.
@@rogerdodger8813 That information has the value of zero.
2 semesters of advanced aerodynamics and a 4 year aviation degree i learned about lift. This 15 minute video simplified such a complex subject in a way that is easily understood! Phenomenal video... thank you!
Would you comment, or LIKE if appropriate, this short piece of the story for the layman? My 11 yo granddaughter did all the editing. *czcams.com/video/3MSqbnbKDmM/video.html*
It's not totally correct
@@baloog8 yeah, I agree, I started to learn fluid mechanical to understand exactly how this aerodynamics works, because I learned solid mechanical approach, so it's a little different when you can think a solid as fluid with an extremely high viscosity.
Lift is action and reaction.
The action is the deflection of air molecules downwards, the reaction is the wing being pushed upwards. Pressure differences are secondary. If there is no downflow of air from the wing, there is no lift.
R
Life is not totally correct, but we can enjoy it.@@baloog8
That subtle background music, please don't dump it. Dont ever stop using it. Makes the videos doper🥺
I love your videos and please keep it up!
Guys that you are making these videos...I am incredibly grateful for your work. I am doing my MSc on Advanced Mechanical Engineering in a great university of UK. Literally, the help that you have provided me is out of this world. I am telling that with all the reality that possesses me. A combination of studies and your videos on Engineering Field have launched my knowledge on many fields. Thank you so so much. Keep working! You are changing the process of studying and unfold the engineering complexity on many fields. Good job!!
Glad to hear it - thank you!
Go Cranfield! Maybe! 🤓
This has been the most enjoyable channel I have ever seen!
“I have never had a class that I enjoyed quite as much as this one.
Thank you so much for this wonderful channel!
Probably the best and only video online that actually explains this topic in an intelligent and complete way. This is pure gold!
one of the best videos about lift, often when they want to build an intuition they state the Bernoulli Principle or Newton's Third Law but Never the Circulation and Kutta theory these we studied only at university and they always focus more on the math and calculation than on understanding, your video has a nice balance between the two.
Watch large jets taking off or landing in the rain sometime. You can sometimes catch a glimpse that the air and water spray over the top surface is moving substantially faster than the jet is even travelling down the runway, and the air is actually accelerating over the wing, past the flaps and then downward.
The explanation with potential flows (uniform+circulatory) is actually more practical as they are used in many preliminary design tools like xflr,xfoil etc
Yes. The textbooks approach the problem in a piecemeal yet detailed fashion. And in the end, you are either completely confused, or the lightbulb goes off in your head.
What is funny about the Kutta condition and Circulation is that you can see these first hand by doing an almost childlike experiment in the bathtub with a model airplane wing , and pepper sprinkled on the surface of the water.
In effect a 2D wind tunnel, where you move the wing through it instead of the water moving.
The pepper particles show the startup vortex off the trailing edge of the wing (Kutta Condition), and when you move the wing from right to left through the water then suddenly remove it, you see a ghostly slow clockwise motion (Circulation) of the area where you removed the wing.
Got this little experiment from a book called Aerodynamics for Engineers. So I guess its college level.😜
good video with wrong explanation
I'm an A&P mechanic and engineer and this is the BEST explanation of how lift works on an airfoil. Thank you for this video.
no, it's not.
Yes, it is @@SoloRenegade
Your videos are so concise and incredibly well mad!. They are definitely helping many people out there, and teaching many more. Keep up the good work!
Current aerospace senior, I have “learned”(the best a struggling engineering student can), and seeing your video helped me understand how all these concepts tie together. Learning everything in detail was a headache and stress inducer, but taking step back and seeing the broader picture has made me realized I actually learned a lot. Great job keep up the awesome work
Thank you! This is the most complete and intuitive explanation of lift that I have ever seen! I've been searching for years but every video only had pieces of the explanation. Might I suggest a part 2 of this that delves into airfoils and their uses? Maybe an explanation for supersonic airfoils? Thanks again!
Im studying flight principles for my ATPL rn so this video came out at a pretty perfect time!
This is the best presentation I have seen for lift so far! I really appreciate you emphasizing that this is only a very small portion of the physics of lift, there is much to be learned.
Awesome explanation ! Currently finishing the bachelor in aeronautics and it is great to have such a channel that refreshes my memory on the basis of aerodynamics!
Wow! I think it is the most complete lift explanation on CZcams! Very helpful and useful for engineers in Universities. Thanks!
no, it's not.
والله انك زلمة كفو قعد المهندس ٤ محاضرات وهو بشرح فيه عالفاضي ما فهمتو بس بفيديو ربع ساعه فهمتو منيح
جد شكرا عالفيديو الرائع عراسي استمر😍
This is a great video! I love the simplicity of the animations along with the slow and steady build up of the relavent concepts.
This is a masterclass! Thanks man! Keep up the great work!
Taking an aerodynamics course currently and this summed up everything covered thus far perfectly!
same here
Lift is action and reaction.
The action is the deflection of air molecules downwards, the reaction is the wing being pushed upwards. Pressure differences are secondary. If there is no downflow of air from the wing, there is no lift.
R
@@RalphEllisto get to the action ur describing is through out the differential pressure caused by the airfoil. With no action there’s no reaction 3rd newtons law 😂
this channel is gold
Excellent video. The best summary of how lift works I have seen. There are a lot of videos out there that take such a simplistic view that they end up being wrong, or at least misleading. [Edited for content]
Probably the best video on this topic I have ever seen, and I have watched a few over there years because I come back for a refresher now and then. This one is top notch.
Amazing explanation as always. I loved that you touched on the circulation aspect, because it often is not explained or mentioned as a reason of the velocity increase. Super thankful and so happy to see the extended version on Nebula! Thanks mate!
Thanks. :) Agreed, circulation is often not discussed which is a shame!
hey man, uni student here and im always confused abt what circulation is. yes , there is a mathematical definition abt it but what is the physical meaning on it?
at 3:53, the secret to lift is Persistent zones of PRESSURE difference.!!!. not circulation
@ David Davids
Pressure difference would not exist without circulation.
A tiny spoiler on top of the wing is very good at stopping circulation and instantly destroying lift.
@ ileonlite
Circulation is what you are left with after you subtract the free steam vectors from the airflow around a wing.
Yet another masterpiece! Well done!
Most exhaustive and complete explanation till date!
By far the best video on aerodynamic lift available on YT. Thank you for this great content!
no it's not.
THE best explanation I have found yet on YT. Even after 3 years of looking arround. Keep up the good work!
Keep looking, there are far better and more accurate explanations of lift on CZcams. This video is full of misconceptions and inaccuracies.
@@SoloRenegade Would you mind linking one?
@@dundun92 search Holger Babinsky and watch his lecture/slides. His explanation is the right explanation. Babinsky Principle.
Nice video. I'd like to clarify the purpose of flaps and slats: 11:36
Partial flaps/slats are sometimes used for takeoffs, but generally full use is reserved only for landings.
Flaps:
1) Increase camber
2) Increase angle of attack
3) Increase chord length (some designs only)
Slats
1) Increase camber
2) Decrease angle of attack
3) Increase chord length
In the case of flaps, all three effects tend to increase lift and drag. The increase in lift allows landing at lower speeds, and the increase in drag helps slow the aircraft after touching down. This shortens the landing distance. For slats, effect #2 decreases angle of attack (relative to fuselage longitudinal axis), so this would tend to decrease lift and drag for a given aircraft pitch. Slats further complicate the aircraft design, so deeper examination is needed to explain the utility of flaps+slats vs. flaps alone.
Increased angle-of-attack (relative to fuselage), reduces aircraft pitch during landing approach. This improves runway visibility for the pilot, and increases ground clearance for the tail during landing. However, it detrimentally results in reduced ground clearance for the wing trailing edge, increases the likelihood of propeller/nose-wheel strikes, and reduces tire traction and rolling resistance while rolling level on the runway, on all gear wheels. The reduced traction (from lift) reduces the effectiveness of wheel brakes and nose-wheel steering, but the increased drag means the wheel brakes don't have to work as hard after landing.
We can conclude that the addition of slats allows the wing to be highly cambered, without excessive angle-of-attack that might result from using flaps alone.
Nice! and just to add a little: Higher pitch attitude on landing also increases landing run on nose wheeled aircraft as the maximum application of brakes requires the nose wheel to be on the ground. This nose lowering time is limited by the aircraft structure. Thus in the case of flap failures it is often the case that the use of slats is limited to some intermediate position.
By far the best video I have ever seen discussing the topic of lift! The visual representation was amazing! Keep it up!
there is far better on youtube, and that are actually correct, unlike this video.
Thank you so much for this video. Making something like this requires several things. Firstly, an understanding itself of the subject topic. Then, thinking through how better to present it and, then, maybe finally, doing all of the work to make the video itself with plots, etc. again, thank you. This is informative.
YES!! THANK YOU. Finally someone who knows what they’re talking about. Circulation is the correct explanation for lift
And also mentioning Newton's law too. A big plus there
wrong. 1) lift occurs BENEATH a wing. 2) a major Source of lift is the presence of a Persistent Zone of Reduced pressure (eg, a specific pattern of TURBULENCE.) ABOVE a wing. 3) not circulation
@ David davids
Wrong.
The lower surface of the wing not only has almost nothing to do with lift creation... but there is actually low pressure under most wings.
The only wings that create high pressure underneath them are supercritical airfoils which still need the low pressure on the upper surface for a lot of the lift and most lift at higher angles of attack and lift coefficients... and the few fighter aircraft that can do high alpha maneuvers at which point the drag coefficient is about ten times as high as it would be to create the same lift coefficient in at a lower angle of attack.
If your theory is true, explain how a tiny spoiler or a layer of hoar frost on top of a wing can be so effective at destroying lift.
@@Bartonovich52 'there is actually low pressure under most wings' ?????
jeezuss. that massively incorrect statement tells us all that, we can IGNORE anything else that you might say. out
@@daviddavids2884 I am not sure whether you couldn't comprehend whatever is depicted in the video or just needlessly trying to be a moron by just completely ignoring what is being explained. 1) True , there is lift below the wing.2) True, the cause of the lift is presence of reduced air pressure above the wing.3) But the video addresses why is there such a pressure distribution...that is a level deeper in explaining the cause of lift than what you know or think...that specific pressure distribution is in part attributed to a mathematical equivalency of circulation
Alas! First a video on aerodynamics drag and now lift....... Love your content.... And the way you've explained them.... Keep it up man!
Hey nigga
Such an easy explanation, thank for answering and clearing a lot of my questons. Keep up the good work!
Omg, thank you so much for this video. It really helped me as an aspiring flight instructor so that I have the ability to explain lift to my students.
Bernoulli's principle only works for incompressible and inviscid fluids (air moving below Mach=0.3). Instead of Bernoulli, we use isentropic relations, the energy equation, mach number, and the equation of state. Not that Bernoulli is wrong, but the idea can be generalized purely by energy conversion, which you did. The random internal KE (static pressure) converts to bulk KE (flow velocity) because it needs to move around the airfoil (otherwise the flow would clump together in space which is non-physical). Splitting it over an airfoil causes the upper flow to speed up more than the lower flow, taking away more of the internal KE, thereby decreasing the static pressure much more over the top, creating lift. This is quantified explained by the other equations I mentioned, the catch is that we assume it is isentropically converted, which agrees well with experiment unless there are shockwaves. Other techniques analyze that.
Yes but that is annoying and incompressible flow is so pretty!
Clear and concise explanations. Great Video!
This video is a good introduction that does not overstate the completeness of any one approach. It gives an idea of the different approaches and an idea that all the approaches are intertwined in a complicated way.
Overall very great video! However, one thing that is important to mention is that the lower air pressure does not "suck" on the airfoil as is implied by your pressure distribution illustration, but rather that the lower pressure on the top surface is pushing less on the body than the higher pressure along the lower surface.
While technically true, it's not uncommon to refer to the "suction side" and the "pressure side" of an airfoil, and it's fine to think of them that way in the context of gauge pressure. Sure, the reality is a reduced inwards pressure, but mathematically and even conceptually, it works just fine either way.
Why is there so much emphasis placed on suction and pressure differences when explaining lift?Pressure differences are more important to lighter than air flight (Hot air Ballons and Blimps). Lighter-than-air flight is achieved through buoyancy. Heavier than air flight is based on the reaction of accelerating air. The primary source of lift in aircraft that utilize airfoils is the downward deflection of air. Deflecting the air downward creates and opposite and equal reaction upward.
I consider the pressure differences as the engine that accelerates air downward.
The reaction principle of lift creates a unified theory of flight that also applies to rockets.
Keep in mind that I am not putting forth that aircraft fly just because they accelerate air downward.
The amount of force generated by the downward acceleration of air equals the weight of the aircraft .This alone will not cause an aircraft to climb. The vertical component of thrust from a propeller or a jet causes an aircraft to climb. Once the pilot reaches the desired altitude the upward and downward forces are balanced. Once balanced an increase in thrust will create a climb and a decrease in thrust will create a descent.
Well, because the guy is clearly a Bernoulli believer.
A question about the Bernoulli principle. If the lift is really explained by Bernoulli, why does the stall of the airfoil automatically lead to a sudden reduction of the lift?
Assuming that the flow separation occurs (initially) beyond 3/4 of the chord, the main contribution to lift, according to Bernoulli, would remain unchanged. Resulting therefore in a lift that is, if not equal, very similar.
Personally, I'm with Newton.
No, it would not remain unchanged. With significant flow separation at the trailing edge the Kutta condition no longer holds, which leads to a great reduction (and sometimes even total reduction) in circulation. Circulation is the cause of acceleration on the top surface. Less circulation -> less acceleration -> less reduction in pressure on top (Bernoulli) -> less lift.
It is not Newton or Bernoulli, it is both, and by exactly the same amount. They are equivalent. Two sides of the same coin.
This is very well done. The best explanation possible in less than 15 minutes!
Thank you so much for this amazing explanation! Although I had an outstanding Aerodynamics Professor back in the days when I was taking my Aerospace engineering degree, visualizing this “basic” principles for the second time helps to understand the topic even further.
The stagnation point is BELOW the wing not at the tip of the nose. The greater the angle of attack the further it moves underneath the wing. This is due to circulation around the wing.
Good video, but "this bullet" *shows entire cartridge as example* lol. I get your point, but it's not exactly accurate. For those reading this, the bullet is only the projectile loaded into the front of the brass casing and NOT the entire assembly pictured.
This is quite good. It takes tremendous effort to put this together and thanx
I have to say this is one of the best if not the best video about the subject that I have ever seen! You got a new subscriber!
I think the explanation at time14:18 of the video says that the "low pressure" on the top surface is larger in magnitude than the "high pressure" on the bottom surface. This is maybe a mistake because the pressure at the top is less than that at the bottom. I would prefer also to replace the "low pressure" with negative pressure and "high pressure" with positive pressure to avoid confusion !!
You mentioned how airfoils are used in wings, propellers, and so forth. So am I to assume that propellers suck an airplane forward? And the huge volume (and mass) of a prop blast being thrust rearward is of little consequence? You show the airflow passing an airfoil blissfully trailing aftward, not being deflected downward. Why, then, do downwash and wingtip vortexes travel downward at astonishing rates? Seems you are ignoring the role of a wing as an air pump, and relying on Bernoulli's modest principle to explain lift. Perpetuating the old CFI tale. Read Stick and Rudder. Wings do not suck a plane into the sky.
Thank you
The propeller blades are clearly curved as to incline the airflow backwards, the direction the trailling edge is pointing is something a 2 year old would realize so I'm not gonna spare you for that, and they do essentially the same thing, low pressure area in front of the blade.
And wingtip vortexes don't travel downwards, wtf, you can see planes flying through smoke, the votexes grow bigger over time, but they stay in the same general area.
I am only finding it now that there's the equivalent of Flat-Earthers for fluid dynamics, I thought it was too smart of a field for you guys to bother.
Watched half a video and already subscribed. Awesome stuff!
Best explanation and video, thanks!
Change in pressure causes fluid to move not the opposite.
Air is faster above the wing because of a favourable pressure gradient along the flow direction on the suction side and an adverse pressure gradient on the pressure side. This is due to the curvature in the flow as the wing passes through the air due to the way a wing is designed. Newton's second law.
Wings are also designed in a way to produce downwash. Newton's third law.
Newton's second and third Laws explain lift completely and correctly.
Consider two particles in the stagnation region.
At the suction side, the streamlines are curved in a way that there is low pressure on the suction side as compared to the stagnation pressure. Therefore the prticle at the suction side get accelerated.
At the pressure side, the stream line curvature is in a the way that pressure gradient is adverse as compared to the suction side.
Apply 2nd law to both fluid particles or to a small control volume of particles at suction or pressure sides. This is why speeds re different.
This is well underattod in case specially of flow through pipes and cyclones etc. It happens due to centrifugal force.
Whenever there is a bend in a pipe i.e. streamlines change direction/bend etc. there is change in pressure gradient across the streamlines. Same is the case with typhoons, cyclones etc. Also, when there is high curvature of the stremline, there is high pressure gradient between successive streamlines and low absolute pressure like in the center of the typhoon has high speed and low pressure.
There is a lecture of Dr. Holger Babinsky in which he explains it very clearly what I am trying to say...
*Principle of lift:* Bernoulli's, Newton's 3rd law, coanda effect, circulation of air into effect.
*Factors affecting lift:* angle of attack, camber.
flat piece of plywood produces the same lift when tilted..
so youve proved nothing..sorry..dr johnny
But why does the faster velocity occur? And why is air deflected downwards? A faster velocity on top and slower on bottom is the definition of having circulation
My man, these videos are beautiful! Really making up for all the professors who don't know how to teach online.
Best Explanation!!!Good Job Man!!❤💯
Bernoulli's Principle: I am why planes fly.
Newton's Third Law: No, I am.
*_Circulation enters the chat_*
what if both theories are applied at the same time
Bernoulli is just a rewrite/application of Newton. Look at how the Bernoulli principle is derived if you don't believe me.
Newton’s 2nd Law is why a wing generates lift. The wing changes the momentum of the air by pumping it down. This results in a force up. The engineering part is how do you do this to minimize drag so you don’t need monster thrust to weight to plow your flat wings through the air.
But if you aren’t pumping air down you aren’t generating lift.
Finally, someone who knows lift has nothing to do with Bernoulli and everything to do with Newton.
@@P13586 For the life of me I don't see why this is so difficult to understand.
You are talking about the 3rd law by the way.
Anyway, you are partially correct, Newton's downwash is one reason, pressure difference is another though. You need both on planes like a 747.
But no sane person is arguing about that. The only thing that is hard to explain is why the air travels faster at the top. Everything else is trivial.
Respect to this man for making this amazing video. 🙏🏻
this might be the best video I saw so far on CZcams!
Finally a proper explaination. Good job 👍🏼
Hands down the best explanation on the topic that I have come across.
this is the only correct simple explanation of lift i have seen on youtube because it's the only one i've seen that has talked about circulation/the kutta condition
Amazingly good job at explaining it
Nice overview.
Best one yet.
Great, just great explanation video - simply the best I have seen... Congrats!!!
Great work as always. I'll definitely be checking out your content on Nebula.
As a person who wants to study aeronautical engineering i am so thankfull for this explanation. Thanks to the animation of newton's third law i have finally been able to intuitively comprehend what creates lift. Amazing video and simply amazing content
Best concise explanation of lift I have ever seen
A very good video with graphical visuals rather than only mathematical formulae and text in books. It helps to understand the concept thousand times better.
Amazing video, so well explained and I learned so much! I'll have to watch this again I think to better understand all of the concepts
What a wonderful and intuitive explaination
Great video, very explicative and accurate.
Very concise and effective explanation. Thanks for this.
I always refer to this channel for clearing concepts, very helpful.
Best, nuanced but simple video. 👊
Amazing work. This 14mins video reminded me what i studied before 14 Years and how I ended up in totally different field for work. 😀
Concise, complete and elegant!
Such a high Quality vid, definitely earned a sub
this is video with top detail...you have covered everything. kudos
Never seen like your videos.... concept with animations! Such a great work. Keep it p
thank you for dedicating your time to making such great educational videos so you can share the knowledge. Great and simplified explanations and animations that help to understand much better. thank you for speaking slowly because that's very important in order to teach, especially scientific terms. thanks again, best of luck
The best explanation ! Thanks.
Thank you for combining concept of circulation with Bernoulli and Newton in your explanation. By far the best video on this topic I have seen.
Isn't it assumptions, imputation, and estimations at this point?
Another amazing video! Thank you!
This is literally the most complete and best explanation I’ve found of Lift presented in an easy way.
Nope it is not. Another non-physical explanation . Nothing said about origin of FORCE. Not Energy conservation and not 3d law of Newton can explain FORCE
@@AndrewPa do you have a link to a description or a description of your own?
Just a regular person and this is the best explanation of lift I have seen. Thanks
Excellent visualisation!
very nice explanation for airfoil lift
This is a reliable introduction to lift, and the best I have seen.
Best explanation so far
The videos are very helpful especially for those how doesn't have proper resources .I hope u will cover many and many such topics that are helpful
I know nothing about aerodynamics or even engineering. I just got curious to try to underestand how we actually can fly on a multi tons aircraft. And this video just made it so simple to understand, or at least the basic principle behind it. This is how grterat your video is! Thank you so much, and keep on the great work
Absolutely brilliant explanation!👍💯
Awesome video!
Excellently explained the concept of lift. Thanks a lot 🙏
Really excellent presentation on lift.
Great work
Taking my first Gas Dynamics class as an undergraduate. Great timing on your video.
One of the best channel for mechanical engineering.