Gotta say that all the videos and the material helped me for my Private pilot checkride, yesterday I passed it and couldn’t be happier and thanks for all the info you guys share to make us better pilots.
I learned about Bernoulli's principle 20 years ago while attending The Motorcycle Mechanics Institute in Phoenix, as it applies to carburetors. That principle is what draws the fuel from the float bowl, through the fixed-orifice jet (at least on ground-based engines - I would imagine the mixture knob on piston aircraft adds another dynamic to this that I am not currently familiar with), and into the engine . Being new to aviation, I had never thought of that in relation to a wing - now it all makes perfect sense. I'm definitely looking forward to your carburetor lesson using this principle. Thanks for the lesson, Jason - I appreciate it! Great stuff as always! 👍🍻
Newtens third law of motion is the biggest factor for lift. The wing scoops air down, and thus the air pushes the wing up. The venturi effect has part in it, but only a minor one. For the venturi effect to be the only cause of lift, a standard Cessna 172 wing would have to be twice as long on top as it is on the bottom, rendering it about as high as it is long.
Bernoulli's principle is a derivative of newtons laws of motion and flight is determined by the relative pressure of the wing surfaces if the pressure on the lower surface is greater than the upper surface the wing rises and vice versa. The air pressure pushes the wing and the wing pushes back as illustrated by newtons 2nd law. Show me your Venturi wing formula, lol. You actually can create more lift in a wing by increasing its length to width known as aspect ratio.
The wing isn’t “sucked” up. It is the pressure differential. When you create an area of low pressure above the wing, the higher pressure below the wing will try to go to low pressure(high pressure always tries to go to low pressure), because the wing is in the way the higher pressure air imparts a force on it and this is why it lifts the wing. There is no such thing as suction in the since of attraction. The lower pressure is not attracting the wing to it. It is simply creating a pressure differential and so the high pressure pushes the wing towards lower pressure. When you “suck” on a straw, you are not attracting the water to your mouth. You are lowering the pressure inside your mouth and the higher pressure out side of your mouth and the straw is exerting a force on the water in the cup and pushing it up the straw.
Jason, you have helped me so many times. But I am currently under the understanding that the idea of air speeding up to meet at the end of the airfoil is now accepted as being wrong.
Theories surrounding lift are perhaps controversial, but I recently learned that the Equal Transit Time Theory (which was essentially taught by you just now) has most certainly been proven wrong. Not to say that Bernoulli's Principle has no effect on lift.
Explanation is totally wrong, because it postulates, that air particles must meet at the end of the airfoil, which would imply that the value of the lift force depends only on the airfoil (and not for example on angle of attack) - and this is obviously not true. Another consequence of this conception is that aircraft won't by able to fly inverted, because airfoil is inverted so it must generate lift downwards - also not true.
Although a basic understanding of Bernoulli is required doctrine for student's obtaining their private ticket, in my mind it just never seemed to "cut the mustard." Does a kite gain it's lift from Bernoulli (airflow over the wing)? Do leaves blowing in the wind credit Bernoulli? Birds? If I drop a feather (or an inflated balloon) anywhere below my ceiling fan, is it's flight path attributable to the Bernoulli (venturi) Principle? IMO, Bernoulli is a "one side of the coin" understanding, at best.
Your reply demonstrates why a little bit of knowledge is a dangerous thing. When you become wiser you'll realize just how ignorant your know it all reply is. Until that time try not to get yourself killed but more importantly try not to kill anyone else. he Is clearly demonstrating in a colorful and rudimentary way, what principle allows for heavier than air flight. To fly inverted a pilot must compensate for the shape of the air foil by increasing the angle of attack while inverted in this case the pilot would push forward on the stick. angle of attack will increase the distance the air on the upper surface will have to travel forcing that air to move faster. Keep in mind he's teaching basic flying skills so his students aren't ready for angle of attack lessons yet. For those of you reading the prior comment ignore that meathead! the way Jason explains the AOF is exactly how the FAA handbook describes it and you get an amazing demonstration thrown in for free.
@@nilma99 You're just making wrong suppositions. the next time you're flying in straight and level flight trimmed out, add power and see what happens to your altitude. Adding flaps also demonstrates Bernoulli's principle. Your examples are false analogies as all of them would be affected MORE by air resistance than Bernoulli's due to their light weight.
@@scottluyet6497 If anything, you (and about 90% of pilots out there) are demonstrating why a little bit of knowledge is a dangerous thing. Bernoulli's principle does indeed explain why the faster moving air above the wing is at a lower pressure than the slower moving air below the wing. However, it says absolutely nothing about why the air over the top is traveling faster in the first place. Piter is correct to say that there's absolutely no reason why air traveling above and below the wing must take equal time to transit the airfoil (or, as it's stated in the video, "the air flowing over the wing must travel faster to meet the air traveling under the wing"). This is an extremely common explanation, but it's also completely incorrect. In reality, amusingly, air traveling over the top of the wing actually arrives *before* air that traveled below the wing, so if you use this false supposition to predict lift, you'll pretty severely underpredict actual performance. It's also worth noting that the people who take advantage of this to then immediately jump in and say "ahh, but it's all just newtonian because of air deflection" are wrong too, or rather are misleading in the same way. Both bernoulli and newtonian mechanics are correct - you can indeed use the velocity at any point around the airfoil to calculate the pressure, and you can also use the downwash to calculate lift, but neither really gets to the bottom of *why* the airfoil deflects air downwards and causes downwash in the first place. The real answer to that is the sharp trailing edge. The presence of the sharp trailing edge forces the location of the rear stagnation point, and pushing the rear stagnation point down enforces a circulation on the flow that accelerates flow over the wing and slows it beneath the wing. It also causes an upwash in front of the wing and a downwash behind. To truly understand this would require a lot more than a few paragraphs in a youtube comment though, so a lot of people fall back on the (very incorrect) equal transit time explanation because it's simple, and let's face it, pilots don't actually have to know why wings work anyways.
somewhat misleading...bernoulli's princliple/theorem, in its essence, says nothing about airplanes, wings, or lift...it is an expression of the speed of a liquid flowing around/through a course and the pressures created by and present in different sections of the flow...yes, lift uses bernoulli, but bernoulli was not written to express lift...
Jason, I have a nagging question. Why does a pilot need to operate an electronic devise (IPAD, notepad, cell phone, etc.,) after the flight plan has been transferred? Don't the functional displays (PFD & MFD) show moving maps, charts, airspace, airport info, and allow rerouting? I can see replacing paper, maybe emergency back up use, but a lot of these video's (not yours so far) seem to spend an awful lot of time VFR, heads down playing with Foreflight or some other application? Forgive my ignorance, I retired in 2005 with a type rating, an ATP, CFI, CFII, MEI. I unfortunately missed the glass cockpit revolution and never played with an inflight camera. I love it, am amazed by it, and still trying to understand it all. Your thoughts? John
The Camber is also known as an aerofoil. I love these videos as it helps me in my goal to becoming a pilot as my parents at the moment don't have money to pay for online ground school or flight school....Keep up the good work 👍✈
This is a ridiculously flawed video using Terminology that is both imprecise and incorrect. I would recommend the person who created this video should read the book “understanding flight”. Those of you confused by this video should read it as well.
Your voice, as always, is engaging and personable ...however, your eyes are not....Sorry buddy but you’re going to need to invest in a Teleprompter… Then you’re golden! A poor but appreciative, and devoted follower, Chas
Gotta say that all the videos and the material helped me for my Private pilot checkride, yesterday I passed it and couldn’t be happier and thanks for all the info you guys share to make us better pilots.
SO awesome!!!!! Congrats my friend!
Congratulations Irving!! 👍👍🍻
I learned about Bernoulli's principle 20 years ago while attending The Motorcycle Mechanics Institute in Phoenix, as it applies to carburetors. That principle is what draws the fuel from the float bowl, through the fixed-orifice jet (at least on ground-based engines - I would imagine the mixture knob on piston aircraft adds another dynamic to this that I am not currently familiar with), and into the engine . Being new to aviation, I had never thought of that in relation to a wing - now it all makes perfect sense. I'm definitely looking forward to your carburetor lesson using this principle. Thanks for the lesson, Jason - I appreciate it! Great stuff as always! 👍🍻
Newtens third law of motion is the biggest factor for lift. The wing scoops air down, and thus the air pushes the wing up. The venturi effect has part in it, but only a minor one. For the venturi effect to be the only cause of lift, a standard Cessna 172 wing would have to be twice as long on top as it is on the bottom, rendering it about as high as it is long.
Bernoulli's principle is a derivative of newtons laws of motion and flight is determined by the relative pressure of the wing surfaces if the pressure on the lower surface is greater than the upper surface the wing rises and vice versa. The air pressure pushes the wing and the wing pushes back as illustrated by newtons 2nd law. Show me your Venturi wing formula, lol. You actually can create more lift in a wing by increasing its length to width known as aspect ratio.
The wing isn’t “sucked” up. It is the pressure differential. When you create an area of low pressure above the wing, the higher pressure below the wing will try to go to low pressure(high pressure always tries to go to low pressure), because the wing is in the way the higher pressure air imparts a force on it and this is why it lifts the wing. There is no such thing as suction in the since of attraction. The lower pressure is not attracting the wing to it. It is simply creating a pressure differential and so the high pressure pushes the wing towards lower pressure. When you “suck” on a straw, you are not attracting the water to your mouth. You are lowering the pressure inside your mouth and the higher pressure out side of your mouth and the straw is exerting a force on the water in the cup and pushing it up the straw.
Jason, you have helped me so many times. But I am currently under the understanding that the idea of air speeding up to meet at the end of the airfoil is now accepted as being wrong.
Theories surrounding lift are perhaps controversial, but I recently learned that the Equal Transit Time Theory (which was essentially taught by you just now) has most certainly been proven wrong. Not to say that Bernoulli's Principle has no effect on lift.
Explanation is totally wrong, because it postulates, that air particles must meet at the end of the airfoil, which would imply that the value of the lift force depends only on the airfoil (and not for example on angle of attack) - and this is obviously not true. Another consequence of this conception is that aircraft won't by able to fly inverted, because airfoil is inverted so it must generate lift downwards - also not true.
Although a basic understanding of Bernoulli is required doctrine for student's obtaining their private ticket, in my mind it just never seemed to "cut the mustard." Does a kite gain it's lift from Bernoulli (airflow over the wing)? Do leaves blowing in the wind credit Bernoulli? Birds? If I drop a feather (or an inflated balloon) anywhere below my ceiling fan, is it's flight path attributable to the Bernoulli (venturi) Principle? IMO, Bernoulli is a "one side of the coin" understanding, at best.
Your reply demonstrates why a little bit of knowledge is a dangerous thing. When you become wiser you'll realize just how ignorant your know it all reply is. Until that time try not to get yourself killed but more importantly try not to kill anyone else. he Is clearly demonstrating in a colorful and rudimentary way, what principle allows for heavier than air flight. To fly inverted a pilot must compensate for the shape of the air foil by increasing the angle of attack while inverted in this case the pilot would push forward on the stick. angle of attack will increase the distance the air on the upper surface will have to travel forcing that air to move faster. Keep in mind he's teaching basic flying skills so his students aren't ready for angle of attack lessons yet. For those of you reading the prior comment ignore that meathead! the way Jason explains the AOF is exactly how the FAA handbook describes it and you get an amazing demonstration thrown in for free.
@@nilma99 You're just making wrong suppositions. the next time you're flying in straight and level flight trimmed out, add power and see what happens to your altitude. Adding flaps also demonstrates Bernoulli's principle. Your examples are false analogies as all of them would be affected MORE by air resistance than Bernoulli's due to their light weight.
@@scottluyet6497 If anything, you (and about 90% of pilots out there) are demonstrating why a little bit of knowledge is a dangerous thing.
Bernoulli's principle does indeed explain why the faster moving air above the wing is at a lower pressure than the slower moving air below the wing. However, it says absolutely nothing about why the air over the top is traveling faster in the first place. Piter is correct to say that there's absolutely no reason why air traveling above and below the wing must take equal time to transit the airfoil (or, as it's stated in the video, "the air flowing over the wing must travel faster to meet the air traveling under the wing"). This is an extremely common explanation, but it's also completely incorrect. In reality, amusingly, air traveling over the top of the wing actually arrives *before* air that traveled below the wing, so if you use this false supposition to predict lift, you'll pretty severely underpredict actual performance.
It's also worth noting that the people who take advantage of this to then immediately jump in and say "ahh, but it's all just newtonian because of air deflection" are wrong too, or rather are misleading in the same way. Both bernoulli and newtonian mechanics are correct - you can indeed use the velocity at any point around the airfoil to calculate the pressure, and you can also use the downwash to calculate lift, but neither really gets to the bottom of *why* the airfoil deflects air downwards and causes downwash in the first place.
The real answer to that is the sharp trailing edge. The presence of the sharp trailing edge forces the location of the rear stagnation point, and pushing the rear stagnation point down enforces a circulation on the flow that accelerates flow over the wing and slows it beneath the wing. It also causes an upwash in front of the wing and a downwash behind. To truly understand this would require a lot more than a few paragraphs in a youtube comment though, so a lot of people fall back on the (very incorrect) equal transit time explanation because it's simple, and let's face it, pilots don't actually have to know why wings work anyways.
somewhat misleading...bernoulli's princliple/theorem, in its essence, says nothing about airplanes, wings, or lift...it is an expression of the speed of a liquid flowing around/through a course and the pressures created by and present in different sections of the flow...yes, lift uses bernoulli, but bernoulli was not written to express lift...
I bet you're fun at parties
When are you gonna do an online sport pilot ground school course? Not all of us can get ppl.
Jason, I have a nagging question. Why does a pilot need to operate an electronic devise (IPAD, notepad, cell phone, etc.,) after the flight plan has been transferred? Don't the functional displays (PFD & MFD) show moving maps, charts, airspace, airport info, and allow rerouting?
I can see replacing paper, maybe emergency back up use, but a lot of these video's (not yours so far) seem to spend an awful lot of time VFR, heads down playing with Foreflight or some other application?
Forgive my ignorance, I retired in 2005 with a type rating, an ATP, CFI, CFII, MEI. I unfortunately missed the glass cockpit revolution and never played with an inflight camera. I love it, am amazed by it, and still trying to understand it all. Your thoughts?
John
Lift doesn't suck, you were correct the first time. It pushes up from below.
upward, not upword
Where is the Link?
The Camber is also known as an aerofoil. I love these videos as it helps me in my goal to becoming a pilot as my parents at the moment don't have money to pay for online ground school or flight school....Keep up the good work 👍✈
Keep on learning all you can my friend while you wait to get started!!!!
@@MzeroAFlightTraining I will and thank you
This is a ridiculously flawed video using Terminology that is both imprecise and incorrect. I would recommend the person who created this video should read the book “understanding flight”. Those of you confused by this video should read it as well.
You spelled "upward" wrong
Your voice, as always, is engaging and personable ...however, your eyes are not....Sorry buddy but you’re going to need to invest in a Teleprompter… Then you’re golden!
A poor but appreciative, and devoted follower,
Chas
Thank you my friend
Upword is not a word - Upward is the word that should be used.