Understanding Bernoulli's Equation 

Sorry, but your explanation of what generates lift is completely incorrect. If it was correct, planes wouldn't be able to fly upside down, but they do it effortlessly. Sticking your hand out of the window of a moving car gives you a very good idea of what generates lift. You don't need airfoil shape for this. Also, check out this MIT lecture: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-edLnZgF9mUg.html They got it right. Lift is impossible without angle of attack. Negative angle of attack creates negative lift.

@@chrisvanwoert8454 Why do you think that lift, as it is understood in aerodynamics, is necessary to make things fly? Lift is required for conventional planes to be able to climb. When a plane is not climbing it just glides. Lift is not required for gliding. What makes an arrow or a missile fly? No angle of attack, no airfoil... Using Bernoulli equation as an explanation of what generates lift is factually wrong because some planes don't have airfoil profile, and planes can fly upside down. This is a fact and Bernoulli did nothing to explain it. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RML70yTD940.html

​@@chrisvanwoert8454 You are comfortably ignoring my questions. Are they too puzzling? Instead you resort to personal attacks. How sad, yet so common and so predictable. So much for an aerospace engineer. Can you give me examples of lift generated at zero angle of attack? Can you give me examples of planes climbing at zero angle of attack?

@@chrisvanwoert8454 I actually agree, that cambered airfoil dose generate some lift, but this is not why planes fly. Planes can fly without cambered airfoil, but they can't fly without utilizing and controlling angle of attack. Saying that planes fly due to utilization of Bernoulli principle is fundamentally wrong. Angle of attack creates an incomparably greater pressure difference and it is this pressure which does all the heavy lifting.

@@chrisvanwoert8454 the video says that this is how planes generate lift without even mentioning the pressure difference created by angle of attack. This is fundamentally wrong and misleading. Lift can easily be generated without cambered airfoil and planes can fly without it, but they won't be able to fly without utilizing angle of attack. Bernoulli principle does assist lift generated by angle of attack, but it is only a small portion of it.

is the math and physics hard like is it intuitive or abstract? thinking about microtechnology studying

@@el_chico1313 I’m a first year engineering student. About halfway into the semester. And I would say ‘hard’ is relative. If you apply yourself and commit to learning the processes and understanding them they will be ‘easy’ to you. This being said. The calculus is clicking with me and physics makes sense but the physics is a lot more difficult in my opinion when you have to rearrange equations algebraically to find the answer you need. If you go into engineering. Make sure you are good at algebra. Bc to understand calculus and to do the processes it requires you need to know the algebra behind what you do. As well as physics. For example our chapter this week are vectors of kinematic in 2 dimensions. We have a position function, velocity, and acceleration. And many times many. Many times you are required to rewrite the equation’s algebraically to find the variable you need. This is required for every problem. And that is more difficult to me than the math is. Because the math of calculus or whatever is pretty straightforward you solve it. Solve the limit. Find the derivative. Whereas physics it’s basically up to you and your intuition to find what you need in order to figure out problems like a projectiles velocity when it hits the ground.

@@promfgamer3699 I agree, Curiosity in any type of knowledge will cure all the "hard" part over time

Where you're from.. I want to make a college project which should be unique... So please help me in the making project

Lmao yess I honestly I ask so many question this explained everything

ok, i'll give this video a shot.

@@G23_12 How was it?

@@asj2020 I didn’t pay attention, I was too busy playing tiny wings on my phone...derp.

Which grade are you being studying in man?

@@Hero_Alan College level haha

What else were they able to do back then? Not like they had any video games, social media or anything like that to stimulate their minds.

It's humbling for sure

These days I can hardly go anywhere without my GPS. In the early 2000s, I engaged my mind more to learn certain things, landmarks, and stuff essentially pay attention. These days I feel we are becoming mentally lazy. We instead need to think about the next vial video that adds no value to humanity except entertainment. Majority of the thinking is left to a few.

@@omogaju i thought you meant u lived in the early 20's lol

Justice Cruz 😂 nice one

Definitely!!

I’m afraid that it would be too hard to explain it in an understandable way.

Unless you have a high understanding of mathematics(if u do great) it will be very hard to understand, if u are an engineering student there are probably fluid mechanics tutorials to solve navier stokes using various assumptions

That would be impressive, though unfortunately comprehending Navier-Stokes requires a high understanding of math, and results in the vast majority of flow being boiled down to non-linear solutions, which ultimately just mean that CFD is the only good option for simulating flow patterns. Though I would love to see a company like this try and explain NS, cause it is certainly one that would be good to have explained easier.

hard to explain , hard to solve

That's awesome, glad to hear it! :) Strength of materials is such an interesting topic!

Kudos for your emotional comment....

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Aeroplane, hut terrace blow off in storm follows this principle p+ 1/2 pgh+ pv^2 = constant

its best

Good luck

Nope, you're too earlier

Get that absolute raise of energy recovery my dude

Bhai ye to create na kiya hai

🎉

OFCOURSE ,ALMIGHTY GOD, inspired him. because he worked so much.

@@ahmetbuyukumman3544 Kapp

@Mahmoud Abdlshafi sez u

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good for you, i hardly remember F = ma

You learn this is college? Bro im learning this is highschool idk why these shtters keep putting high level stuff into kids syllabus. 11th grade btw

that's awesome

Almost same to me....but I came through Planes and Now I'm a Mechanical Engineer

@@gouthamkumar1750 wow

@@gouthamkumar1750 was it hard?

@@geckokun2805 nope.... That was the best part of my life....I built "BAJA SAE" every year since my second year, I was in FSEA SUPRA and Hybrid cars for 1 year and SAE GOKART,EFFICYCYCLE and SOLAR vehicles on my 3rd year...I just have 1 regret though I have never been to an international event but I roamed all over my country just in 3 years and It was completed sponsored.. Now I just miss those days

I feel the same !!

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How did it go?

@@thelaurens1996 I'm James' second account. It went pretty well in the first half, but I failed the second part of the exam.

Learning is a raise In all rejected goals

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Its one of the best Engg formulaes

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This is what my teacher did as well. He just copied the derivation of the equation from the book to the whiteboard and didn't really explain anything.I doubt he understood anything about it himself.

Hi Jon, thank you for sharing the videos! There are many Blender tutorials on RU-vid which explain the software far better than I ever could, so I haven't planned on creating any such videos myself. I talk a bit about my specific workflow on my Patreon page (www.patreon.com/posts/36136936), but feel free to email me at hello@efficientengineer.com if you have questions or anything you would like to discuss.

im doing a report on this topic and everything youre saying is 100% true bc so far im 15 pages in and i barely know wtf im doing

@@alieneater3328 so how'd that report go?

@@yngfljm2277 went well. actually understood what i did eventually and submitted it.

I think u are not able to make the connection between these concepts... Actually it is interconnected... I.e. the shape of the wing and the tilt contributes to the low velocity... The key here is reducing the velocity below the wing which cause not just the drag and lift effect but also increase in pressure below the wing span... Which mean relatively higher velocity and lower pressure in the upper wing portion...

@@deepaksubba9527 - I perfectly understand the interconnectedness of the principles involved. I am just stating that Newton's law is the predominate issue here.

@@cwj9202 I agree about Newton's Third being important but the pressure differential can't be underestimated. The pressure differential is not just dictated by the thickness of the wing but by the difference in boundary flow conditions on the upper and lower portions. The flow is much more turbulent on the upper portion (the 4 degree tilt mentioned ensures this) resulting in a significant increase in velocity and corresponding decrease in fluid stagnation pressure on the upper portion relative to the lower

@@ilovekianna21111 --- I will not disagree with the physics you mention, but I think they are minor in comparison to the principles of Newton's third law of motion.

@@cwj9202 I dont understand why bernullis principle is always used to explain wing lift eventhough newtons ? law is so much easier to explain( and isnt countrrintuitive to many people as decreased pressure st higher speed is) also it doesnt explain lift from symmetrical airfoils

Hope it went well!

@@TheEfficientEngineer Thanks. We'll see after I get results 😃

@@TheEfficientEngineer Went well. I passed, now I have this video to help me for oral examination. Thanks!

ru-vid.com/show-UCgnO_q7xjxSYotvyUMgwzEAvideos

That's why they call it a paradox for a reason. :)

Same with me, when they explained this to me as a teenager I immediately asked how does the speed change decide that and how does it occur. And no explanation was given. Never believed that. It was until later I could see how the explanation is backward and while the principal can explain the airspeed difference that is all it can, but it cannot explain lift.