Principles of Flight 

I've understood a lot more in this video than the past 6 months of ground school! Absolutely amazed! Please keep them coming! 👍👍👍

Omg that hand-out-the-window example is exactly what I used to do as a kid and how I visualized planes working before it was explained to me. But since then I'd never actually heard anyone use this example.

As an independent flight instructor I am exceedingly grateful to Embry-Riddle for sharing this material which I have my students watch to supplement training. Little wonder why they are the top aeronautical university in the world. Yes-Please keep them coming!

just explained weeks worth of studying is 15 mins and very clearly too THANK YOU

This is the clearest and the most straight to the point video related to principles of flight i've ever seen. Even though English is not my native language, I was able to understand everything. Great video thanks !

By far the best principles of flight video I've ever watched! thank you so much!

Absolutely fantastic, comprehensive look at the topic! Clear, concise, well illustrated, just perfect! Kudos to the production team!!

Probably the best explanation I have ever seen thus far. Great job thank you

What an incredible video.. I did flight training in the 80s when audio visual aids were very low res and rudimentary. This is stunning and such a refreshing learning experience. look forward to the other videos... wow!!

Been prepping this lesson for my CFI practical for weeks now, and this video settled my dilemma of how to plan this in 15 minutes. Thank you so much!

I love that the CL and the L/D Max graph was also implemented with the lesson in this video! Wow, it helped so much. I'm definitely going to watch this one again!

I'm here for school work and I had trouble understanding the video our teacher sent us. I thought I wouldn't be able to complete the work until I stumbled upon this amazing video. The explanations and visual images helped me understand more about flight! great explanation, keep it up! Thanks

Happy to find this video and channel. I understood much more in a simpler way, than the ground school lessons. Thank you so much

Thanks for this great video! It really helps to be able to hear things in different ways, in addition to reading the PHAK and AFH.

Getting ready for cfi checkride and the style of explanation of this video is so elegant. Thanks much for sharing.

Thank you so much for sharing these high quality videos with us!

This video was excellent. Very detailed, visually stimulating, and well explained. Thank you!

Just fantastic. Crisp and clear. Great channel!

This is the best video on the internet, thank you

This is great. How can we get FAA credit for these classes?

These are awesome lessons. Wish I was 50 years younger!

Best lift explanation so far. The venturi tube animation clearly explain the bernoulli's theory on airfoil.

many thanks. great channel. great content. great video. please keep it up.

Excellent. Very well explained. Inspiring. Thank you very much.

Beautifully done!

Thanks a lot for such a clear explanation. The best I could find

Great Video! We use this to inspire and teach high school students

This is wonderful, so informative and easy to understand. Thanks for sharing.

Great Video Simple to follow and highly informative

damn, these videos just took me back to class some details totally forgotten... If I had these videos 10 years ago...

Fantastic videos.

Reading each section , and then watching your videos !

thanx for this beautiful trepresentation

Very good video, clear and concise

This video is just excellence.

Beautiful explanation even for a person who doesn't know anything. Greetings from Malaysia & Singapura

Very good explanation, very thank full!

Thank you for this!!!

Very informative, thanks for sharing

This is better than the online course I took a week ago!

Keep these great videos coming!

Thank you so much,watching this video explained more to me about aerodynamics 👍

Such a great video. Thanks!

The best video ever! I'm a beginner and can understand so so well.. amazing 🙌✨

Amazing vid. Thanks! Greetings from North Korea

I am and Aeronautical Engineering student and what you've explained was summarizing my subject for subsonic aerodynamics and fundamentals of aerodynamics. This is very helpful and you will learn the basics in just 15 mins. Good job and please keep this up!!!

Thank you so much. Good study material for me

this video is awesome, and playlist on this channel too

The best ever explaination in the world Just do a videos about fighter jets

Sir. So much thanks to you as your videos are very beneficial and amazing for us. Thanks sir

Great video nice job . As pilot this is great ❤

This video is incredible!! Thank you for sharing.

Awesome explanation from 4:09 - 5:15.

Iam an aeronautical engineer studient and i should that this video is so good!

I was a US Navy Schooled and Experienced Aviation Flight Controls Systems Mechanic/Technician, '8 years' doing it. I am really amazed how Engineering Mathematical Physics applied to real world problems solutions for the advancement of man. Now we have Artificial Intelligent computerized algorithms with the fusion of miniaturized sensors used by modern Control Systems Engineers using Kalman Filtering computations by a computer to control the complex operation of an airplane in flight, drones and all types of modern automation, all that has made a Piliot's job easier today. However, A human pilot's brain though is still the most used computer for ultimate decisions for SAFETY in the commercial world.

I've learned this at Guyton aviation physiology lessons! 👍✈️

Excellent video! Regarding the discussion of L/D; I'm not sure that flying a speed or angle of attack for that condition will allow the aircraft to stay aloft the longest (as stated at about 14:00). One must fly the minimum sink speed to achieve that. Minimum sink speed is slower than L/D and can be found using a polar curve (glider handbooks have these). L/D max gives maximum glide range, or most distance for a given altitude. Looking forward to more videos. Thank you!

This is really helpful! Thanks!

Good presentation thanks.

This is such a good video

Superb video! thanks

Great video!

Great explaination of newtons laws and how it related to lift. One thing I didn't agree with the pinching of flow at the leading edge causes the velocity to increase. This would be the case for internal flow in a pipe, but not always the case for flow around an airfoil

Thank you!

At time 4:40 there is a great mistake in explaining the priciple of how lift is created by an airfoil. The upper surface of a wing is NOT the lower half of a Venturi tube. The air is NOT squeezed into a narrower flow path. The real reason for the lower pressure of the air above the air is the curved path that the air has to follow across the upper surface of the wing. Any mass that follows a circular path - (a large part of a wing's upper surface can be regarded as as a sector of a cylindrical surface - forcing the air in a circular path for this part of a cylindrical shape) experiences two opposite forces that are perpendicular the the curved path of the airflow: a) The centrifugal force, pulling away from the wing surface, and b) the the centripetal force pulling towards the wing surface and forcing the air to follow the wing-shape, rather than following a straight line. Those opposite forces (trying to pull the airstream appart) produce a low pressure in that airstream above the wing. The difference between the low pressure at the upper wing surface and the pressure at the lower wing surface (which is close to ambient pressure) is the main reason for the lift that a wing creates.

EXCELLENT f'n video!!!!!!!!

Wouldn't the wing with zero camber also be the kind stunt planes (like the Extra 300) use?

Excelent!

4:00 because mass flow rate of a fluid is constant (A1V1=A2V2) when the cross sectional area of the pipe decreases the velocity must increase. The reason pressure decreases when velocity increases is because the pressure had to increase beforehand in order to increase the velocity of the fluid. And with the airfoil it’s the same thing since the top part is curved air molecules have 5:06 to travel a greater distance over the wing than under the wing so their velocity is greater and pressure is less than the bottom. Since pressure under the wing is greater and pressure = force/area this means the force component of pressure under the wing is greater. So if you just look at the wing as its own system and Force on wing = mass * acceleration then there will be a positive (upwards) force and thus a positive (upwards) acceleration which we attribute to flying. Note that the air molecules act on the surfaces of the wing with an impulse which has a Force component (impulse = force * time) so this force from the air molecules is what contributes to the Force component of pressure and the pressure and velocity differences stuff puts us back at Bernoulli’s principle

Great Video 😊

You forgot that wing tip fences help lower induced drag

I a,ways like your videos. Thank you!

Love aviation.

Thank you

Very good lesson. It would help safety and reduce fatalities, I think, if the lesson on dynamic neutral stability were added in this lesson or perhaps wait until the stalls theory lesson. Somehow this seems to get lost in the flight school program of orientation and indoctrination. We old guys can discover this by asking what causes and airplane to stall. The answer is 99.9% "the pitch angle of the wing reaches the critical angle of attack." But that, given neutral dynamic stability, is not how the airplane is designed for safety especially in turns. The airplane cannot stall itself. A pilot, or computer, is required pulling back (ok forward if inverted) on the stick. The pitch angle reaching the critical angle of attack is when the wing stalls. Pilots cause all stalls. Wolfgang, in Stick and Rudder, talked about what the airplane wants to do. In the interest of safety, and fatality reduction, we need to orient pilots in the maneuvering flight environment (say around the airport) need to allow the design of the airplane to prevent stall. In the maneuvering flight environment, where inadvertent stall is fatal, airspeed and not altitude is life. We are teaching the wrong orientation here when we insist on maintaining altitude at any cost. We need orientation toward knowledge of and even use of the potential energy of altitude to provide extra airspeed to make a turn of any bank, not just limited bank, a 1 g turn. If we turn without back pressure on the yoke, without worry about altitude, we will not stall in the pattern. The airplane is incapable of that. High altitude orientation says altitude is life. We don't live there during takeoff and landing. Down here airspeed is life. As a crop duster and pipeline patrol instructor, I have been teaching low altitude orientation since 1974. You guys have a lot more clout than me. A little help here please. At least let your students know that there is a difference in the low altitude environment and labelling it taboo does not help pilots understand the difference. They have to take off and land in non-rocket powered airplanes until they get to be an ATP. Some might even go Ag or fight fires or work low. Theory has neither vertical nor horizontal space available limitations. Airport patterns have both.

so helpful 💜💜💜

Very good!

Very informative

This video is very good, with one exemption: The illustration at 3:20 does not explain Newton's third law, because the airflow is not deflected downwards behind the wing (it looks more like a stalled wing). According to Newton's third law is lift the opposite of the downwards force created by the air flowing behind the wing. And what is completely missed, is the fact that the air is pushed upwards BEFORE the wing, balancing the downwash behind the wing. Finally, Newtons second law is essential: Because of the curvature is the air accelerated above the wing (thanks to Bernoulli). F = m * a. This acceleration creates the downforce, and the opposite force is lift (Newton's third law).

if Thrust equals drag, wouldn't the plane be at a zero airspeed? Doesn't thrust have to be greater than drag to move the plane forward?

Why is it that the pressure decreases in the Venturi tube (3:54), I understand that the velocity would increase but since there isn’t as much room in the tube I would think that the pressure would increase?

Absolutely agree with the guy below me. Ground school online is the only way to intelligently pursue knowledge involving aerodynamics and the...actually anything related to Ground School. I wasted 6 months doing ground school with an in person instructor. Waste of time and money. I've learned more on youtube in the past month than I got from him in 6.

@3.55 plz correct me, how pressure decreases and velocity increases, I think the reverse should happen, when the same amount of fluid is to be moved through it the velocity should decrease and pressure should increase, I am not talking about wing but the apparatus shown at 3.55 only

thanks cap

Very nice video

Saving to watch later

oK , check HENRY CONDA effect and the principle of Reaction -Inventor in Romania. Thks

It is so weird, that angle of attack is a clime while I always thought the attack is a decline. Can be an angle of attack both climb and decline or only when plain gain altitude (climb)?

13:34 How do you have the most amount of lift at the lowest amount of total drag?

I think I found an error at 2:26 According to that explanation, the angle of attack will always remain a constant. No matter the angle the plain is flying, the difference between the two values remain the same. Right?

Great 👍culture 👏👌🙌👍🙏

Please explain how lift is directly proportional to drag.

you could design a small craft...the size of a bird with fixed wings that utilised a totally novel approach to flying...by shooting out a weighted cable in front and above it and then using a motor to climb the cable... or another idea...shoot out an electromagnet in front of the craft and turn it on off as required... if you propel the cable you can change the direction of the cable for complex maneuvers...

Nice channel

Why is the pressure decreasing as the air entered the venturi of the tube (narrowed section) and what causes the air to increase it's velocity in the venturi?

very well

What is the name of the aircraft at 11:10?

My problem is how would such an idea, angle of attack, work with a plane flying upside down?

Summary the principles of flight

Air is a type of fluid