Principles of Flight

[@charlesstiles342]

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!

[@KevinRaza]

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 !

[@awenaw2165]

Among us

[@Amran123able]

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

[@shayanhassanbigi2310]

You need a new school haha xD

[@alexandrevalente9994]

One thing is to understand and another is to explain others ;-) but also... some pilots thing they understand...and explain very bad. You can learn to fly without understanding what is really happening.

[@EdWeibe]

I am thinking of going to school. I hear its expensive though.

[@aviationgrande]

amran alkhatry me too bro 😂😂

[@Jay-jb2vr]

@@EdWeibe yes it is

[@DiCola119]

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.

[@nickromanick]

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!

[@judyanddy]

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

[@sweetm4ngo]

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

[@rodri5368]

Hands down the best explanation regarding this topic.👏

[@mypretendaccountforj]

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

[@SouljaGrl8]

This video is the greatest help with the best breakdown of the basic aerodynamic principles. I didn't fully understand the explanations my CFI gave until I watched this. Thank you so much, even in 2024.

[@harrymole7230]

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!!

[@pyscripts505]

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

[@tylerfielding5311]

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!

[@aneesahmed2978]

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

[@analogman9697]

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

[@aaaaasoper]

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

[@Geosbudy]

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

[@sorgfaeltig]

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.

[@rsk6929]

You sound like an engineer

[@sorgfaeltig]

@@rsk6929 Yes, I worked as an engineer in aviation.

[@rsk6929]

@@sorgfaeltig Cool I'm going to Embry Riddle to be an Aero Space Engineer.

[@Kenny-Ross]

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

[@coolhari2000]

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

[@noroardanto]

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

[@dandaly2998]

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

[@MrBoomBoom1942]

Amazing vid. Thanks! Greetings from North Korea

[@lukluk167]

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

[@albertvaldez2669]

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

[@anandsubramanian7427]

Just fantastic. Crisp and clear. Great channel!

[@svenf1]

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

[@brandonmiller4632]

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!

[@ERAUSpecialVFR]

Since the manufacturer doesn't publish a Minimum Sink Speed curve for the Cessna (or most powered aircraft) we chose to simplify the discussion and go with the manufacturer's recommendation. We always encourage pilots to dig much deeper into all of these topics, and especially into aerodynamics! Glider flying is a wonderful place to start!

[@rodericksibelius8472]

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.

[@SleekDan97]

This is the best video on the internet, thank you

[@umarmars47]

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

[@CorySchneiderOfficial]

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.

[@ainalen3883]

Reading each section , and then watching your videos !

[@MagnarNordal]

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).

[@ERAUSpecialVFR]

Thanks for the feedback! In designing this course, we had to consider not only our audience (high school students,) but also the purpose of the course. It was designed as an introduction to aviation theories and principles. Don't worry....once students enroll in a degree program at the University, they will get their fill of physics and aerodynamics. :-)

[@highsky9066]

Best video on internet I really got into the video ❤ Thanks Keep making them ❤

[@Ben-fc2xk]

This video is incredible!! Thank you for sharing.

[@cq7415]

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

[@ayojyotika]

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

[@Arcwol]

Awesome explanation from 4:09 - 5:15.

[@matthewajlouny3714]

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

[@zachthomas7810]

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

[@logyscott]

Very good video, clear and concise

[@SirFrancisFoley]

Fantastic videos.

[@madhulatha65]

Good presentation thanks.

[@ZimmMr]

Beautifully done!

[@shantanupoddar1831]

This is far better than the teacher explaining the same thing to students in college.

[@leonardgibney2997]

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

[@Aabbcczzxxcc]

this video is awesome, and playlist on this channel too

[@BEACHYz]

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

[@jcdominguez2015]

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!!!

[@yousifgaminguniverse4429]

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

[@dillonjackson1851]

This video is just excellence.

[@miriampopa5436]

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

[@lanternacademy1637]

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

[@TheMaxik]

Such a great video. Thanks!

[@ambi50]

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

[@muhsinbadshah6388]

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

[@mrgmahon]

Great video!

[@jimmydulin928]

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.

[@enkavidhaigal1707]

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

[@The_Plane_Spotters]

Great Video 😊

[@giftuzoho5235]

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

[@millandianne]

Great video nice job . As pilot this is great ❤

[@kwntech]

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.

[@kamelkadri2843]

Great Video Simple to follow and highly informative

[@ricp]

Superb video! thanks

[@eskimo330]

This is such a good video

[@ramflyer1899]

Keep these great videos coming!

[@soulnickos2245]

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

[@mrsaraf3459]

Drag is basically air friction. Since we know that friction acts opposite to direction of motion, lesser the friction more the lift you get

[@maxmcvicker]

You don’t. They are showing the point of lowest amount of drag. You can have more lift but drag will increase past that point on the curve.

[@tomstravelingadventures]

Very informative, thanks for sharing

[@cos6840]

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?

[@captainsledge7554]

You forgot that wing tip fences help lower induced drag

[@bobo-l5v]

I say it again; 1st officer of AF447 was sleep for this lesson!! "angle of attack"

[@drpando]

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

[@TheMaxik]

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?

[@maxmcvicker]

What they did not mention here and what you are probably correctly considering is the FLIGHT PATH of the plane. If the speed of the plane is increased or decreased, the flight path will then change and then too the angle of attack will change.

[@abhinavsaxena5470]

thanx for this beautiful trepresentation

[@coosk0110]

Thank you so much. Good study material for me

[@grumyoseph]

Very good explanation, very thank full!

[@srigi-dev]

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

[@ERAUSpecialVFR]

Srigi That is the Diamond DA-42.

[@alimaabattsengel8221]

so helpful 💜💜💜

[@arunkumarsukumaran3589]

Very informative

[@qutubhashmi1656]

Very nice video

[@dhafersaleh6727]

Great 👍culture 👏👌🙌👍🙏

[@inggie2]

Thank you for this!!!

[@BeholdSevenWoes]

Thank you!

[@francescopiazza4882]

Very good!

[@alderusdmc]

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

[@TheScottruchek]

I a,ways like your videos. Thank you!

[@UniversalVideoro1]

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

[@GiuseppeSRedSky]

Nice channel

[@timedwards2935]

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?

[@grigorybykovskiy6763]

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)?

[@ERAUSpecialVFR]

Angles of attack can be both positive and negative, although they are almost always positive. Depending on other factors, a positive angle of attack can result in either a climb or descent.

[@rusty9959]

This is really helpful! Thanks!

[@ankitkumarojha6103]

Please explain how lift is directly proportional to drag.

[@maxmcvicker]

As lift is doubled, drag is quadrupled. Drag increases as the square of the airspeed.

[@prabhakarmishra2182]

@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

[@arunkumarsukumaran3589]

Thank you

[@paulwl3159]

Why does air move faster over the cambered upper surface of the aerofoil? Why does it not move faster against the flatter less obstructive lower surface?

[@maxmcvicker]

Think of it this way instead; the air is still and the air is being knocked out of the way for just a moment by the wing. The upper surface is wider and like a big man moving through a crowd, knocks the other people standing there ( air molecules) out of the way farther but as it ( he ) passes by, the air ( bystanders ) immediately go back to their positions. They had to go further to get back so they had to go faster and that faster recovery speed caused low pressure.

[@JumpkingZHD]

every dislike on this vid are people who failed their exam

[@HoustonGamerTVHGTV]

Saving to watch later

[@troyhayder6986]

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...