Let me know what educational videos you'd like from me in the future! Happy New Year!

I didnt know spreading honey into bread was that complicated.

"Let's flow right into it" Ah yes

Hi Adam, I have been watching you for years, and wanted to tell you the impact of this specific video on my life. In 9th grade, I saw this video, while browsing your tutorials on how to play some prop planes. I got interested in laminar flow and flow of fluids, and began studying computational fluid dynamics, winning science fair in 10th grade, where I created a laminar flow airfoil cross section for 2 million reynold's number, and won some rewards from AIAA and US Office of Naval Research. Fastforward 2 years later to now, I just completed a 9 week internship in Germany at DLR (Deutch Zentrum fur Luft und Raumfahrt) over the summer after 11th grade, and may get a paper published about comparison of lattice boltzmann method (LBM) and FVM for flow through carbon aerogels for use in batteries. So thank you for this inspiration.

ADAM IS ALIVE WITH SOME AERODINAMICS TOPICS LOVE IT!

That's a great video. Thank you Adam, I enjoyed it.

I’m currently majoring in Aerospace Engineering and learning about Laminar flow at the moment! Very interesting topic & great video explaining it as well!!

The legend is back. You should do a video on the c202’s wings

7:16 That is super interesting. Applying a relatively basic concept to aircraft design. This makes total sense.

It would be interesting to see a video on the benefits of elliptical wings, a la the Spitfire.

This is more interesting and fun then an actual school lesson god i could listen to you all day teaching

😬😬bro your explanation gives me goosebumps...I thought u were gonna explain it simply but wow I'm impressed, man! Thank you

Adam - excellent tutorial. A suggestion. It should be noted that Laminar flow over a flat plate transition near RN= 0.6x10^6 - which is a very low airspeed based on MAC of the Mustang wing. Implicitly the next stage of Transitional Turbulent Boundary layer before full blown Turbulence near the region of adverse pressure gradient - should be the focus of comparison between the Mustang NAA/NACA 45-100 airfoil with T/C max ~ 38-40% vs NACA 23015 or Republic S-3 with T/C max ~ 30%. True - the Horkey team, using Kutta-Jukowski, Theordorsen and Prandtl transformations began the analysis & design based on reducing T/C, LE shape, etc of the NACA 450125 Laminar Flow airfoil, then further refined based on desirable CMac and stall characteristics but they quickly learned that the Mustang wing was not 'Laminar'. NAA always described the wing as High Speed/Low Drag - never 'Laminar'. What was discovered was that the Transitional Turbulent BL while 'thicker' and increased as a f(T/C), it was much smaller than turbulent BL and chaotic eddies beyond T/C> 50%. When the Germans tested a captured P-51B (from D-Day), they discovered the same phenomena and commented that the wing's 'attached' BL was greater than 25% more than any previous airfoil of best fighters. The Bf 109 had a modified NACA 23015 and the FW 190 a 23015.5. Such major separation. of course, increased friction drag, but I would pose that the smaller associated 'frontal' region of relatively quiet flow and area seen by the freestream past the T/Cmax perhaps reduced comparatively the pressure drag associated with a real wing. Your comments?

Nice video!! Good to see the master teaching some fluid fundamentals better than many overpaid professors

Excelent video! As an aeronautical engineering student i knew most of the theory but there were some new things in there for me, for example the more skin friction on the bigger fuselages of aircraft with a radial engine.

Oof I hope a lot of People actually watch that Video because I'm sick of talking to ppl who just trow the word laminar flow around without even knowing what it is...

Turbulent flow sticks better to airfoils, right? (Delayed separation). Is that why it helps prevent stalls?

Proposition of topic: Impact of tail configuration on manuverability in high and low speed. (if it's not clear enough there's an explanation: I observed that many planes with good low speed turn perfomance (zero, ki-43, hurricane, La's, yak's) have usually elevators set slightly forward of the rudder. That made me think that it might be beneficial for staying mauverable in all speeds to have a plane with variable tail configuration (that is ability to move whole horisontal stabiliser move forwards and backwards across the fuselage lenght. )

the P-51 prototype wing, when tested by NACA in their wind tunnel, had 50% lower drag than the next best wing in existence at that time. As laminar flow wings had not been used before, NAA engineers hedged their bets and had a backup non-laminar flow wing design ready incase the laminar flow wing didn't work, so that they could still deliver their prototype P-51 to the UK on time.

That covered a good 80% of my aerodynamics class.

There should be a series where you just tell the pros and cons of a vehicle because the ones you havent flown like most premiums we dont get your great list of pros and cons

Finally something interesting in my feed. Thanks for the vid!

it's definitely interesting how different corporations/countries had different approaches with the same technology. Like how the Germans was actively researching laminar flow but didn't find it worth it for their use while the Japanese used it for planes like the ki-61.

Happy New Year man,love your informative vids as i'm highly addicted to aircraft,keep em coming

Edit: I'm happy to see you addressed the major failings of the conventional wisdom and came to the likely correct conclusion. Laminar boudnary layers are pretty sensitive to perturbation: They are likely to be turbulated by any surface imperfection more than a fraction (experimentally ~20%) of the boudnary layer thickness (99% freestream) , and once turbulated, the turbulent region propagates outwards along the surface as a Tollmien-Schlichtling wave producing a turbulent cone. This basically guarantees that any portion of the wing near the fuselage or wingtips, in the prop wash, or aft of wing skin seams or gunports, or even dust and splattered bugs will be fully turbulent from the leading edge. In addition, a laminar boundary layer can also be turbulated by surface vibrations, surface temperature variation, and adverse pressure gradients, as the top surface of the airfoil would experience when producing lift. I worked for several years on landspeed record vehicles that rely heavily on extending the laminar boundary layer. The best result we've predicted and verified on any vehicle is ~50% laminar surface area using a heavily 3D-optimized shape with no seams or protrusions, meticulously smooth surface, vibrational damping, and painted flat white to minimize heating. We routinely measure siginficant performance drops due to minor scratches, bugs hitting the shell, or non-ideal weather. In short, I would be *extremely* surprised if the P-51 wing on any real aircraft got close to 40% surface area in a laminar boundary layer even in ideal flight conditions.

If the laminar flow doesn't affect the high speed turning ability of the p51 (except for the reduced drag) how come the plane turns the way it does? Love these vids! Keep em going man!! ^^

I love your vids Adam!! Keep up the excellent work!!

from what i understand the prop wash is not spining as you mentioned...also a smart desighner would put the gun holes in the stagnant point so they would not upset flow.

This is why all my engineer friends play war thunder

Im actually using some of your videos as refresher material for my aerospace course in university. And also to better appreciate the aircraft in war thunder hehe. thanks for fueling my passion in aerospace :)

OMG, Reynold's number, somthing that made me so many nightmare during my undergraduate school. Now I'm crying in the shower trying to manage my PTSD =)

Working on my A&P right now, this was a nice refresher on drag for the generals plus some new interesting information. Nice vid!

Thank you for the Ed video adam, my support always to you.. from 🇮🇳.

Golf Ball! And a good friend, the flat plate approximation, returns.

Outstanding Adam, thank you. Maybe a video on propellers ?

Thanks to this video I can get my certificate of aeronautical engineering.

Aight that explains the honey

Next do P factor?

You should talk about the Meredith effect.

You should explain the graphics you use briefly. It took me a minute to understand that the plate in the graphic at 2:44 was represented by the x-axis and that the wing shaped areas were representing the speed of the moving air. For people who are dealing with those graphics on a regular basis it is probably obvious. But for someone like me who is not it isn't.

I suggest the ki-61 hei (either) I would love to see how you do with such an amazing plane and I'm sure you haven't done a video on it before

From everything I’ve heard about it, the designers purposefully hyped the laminar flow properties of the wings so no one would look too much into the under-belly radiator. Much like how Lotus engineers would drape blankets over the rear wing of their car so people wouldn’t catch on to the ground effects and side skirts.

Fantastically explained.

7% less drag a huge number in the real world lol

Awesome! Cool about air intakes! I didn’t know why there was a gap!

Nice video Adam, idk much bout engineering, but i would like to see more videos like this.

"snowman for scale"

Great explanation, will you make a video on other types of drag, such as induced drag?

I don't know wtf is happening but Mustang is my fav plane so I'm here

I realize first-year aero engineering uni topics are easier to condense into layman's terms for a video, but I think it'd be nice to see you get a bit more technical and make a video on something like flight dynamics propagation be it through linear or nonlinear modeling. Linear modeling would let you easily segue into basic stability theory given that state-space system representations are fairly straightforward to explain, and nonlinear modeling would also then allow you to segue into Euler angles/quaternions and how they pertain to shifting reference frames for flight modeling/simulation. All in all, I think this would give a nice high level overview of the underlying simulation mechanics in war thunder!

British tests showed that the P 51 couldn’t achieve laminar flow over 40% more like 10% even with TLC and hand contouring, but it still a low drag wing. The P51 is a VERY smooth aircraft just compare to a Spitfire or 109, but laminar flow is just too hard the 1940s.

I subscribed to you yesterday after wat hung the re 205 video where you were talking about laminar flow for your passenger plane your designing in chat. I tried googling laminar flow but I learnt nothing and then I opened yt and I see this. Coincidence? Yeah probably but I like to believe it's not.

As someone studying aero eng. This very well explained and is consistent with the theory! Wondering what text book you used? Also covering flight vehicle propulsion would be an awesome topic. From piston engines, propellers, to jet propulsion

sir. you deserved all the silver lions you have in war thunder

Is this what u think about when u in a dogfight?

Nice! Thanks

MORE OF THIS

> snowman to scale Where’s the man man, man?

Hey Adam, could you do a video perhaps on the mechanics of the Flight Instructor, and how it relates to the actual control surfaces on an aircraft? Would be interesting to highlight some strange things the instructor does like applying top rudder during a low speed turnfight

Very well explained!

Thats clear and nice

Considering how you mention that quality of production would affect the ability to maintain laminar flow over the air foil, I am left wondering how much of a difference there was in speed of early versus late production for the P51 within the same model type.

I heard that in the p51 manual it states that the wing is "of laminar flow design" and that it doesnt state anywhere that its actually a laminar flow wing

Many sailplanes today utilize laminar flow wings.

damn, last time i was on this channel (2 yrs ago) adam just use text on screen, now he talks?? how could i miss this

Very good video!

As always... a masterpiece!

So its true adam even looks at honey on bread on a scientific level

I really enjoyed this one. Nice man

Happy New Years Adam! I love these videos. (Besides the puns hehe)

I imagine a hypersonic aircraft would benefit from laminar flow airfoils correct? At that speed one is likely more concerned with rage than stall characteristics and lift coefficients.

Adam, I have a question for you, not related to the video (which was great btw). In a lot of your videos, I see that you make the enemy overshoot, then kill them. But when you are the one overshooting, and you don't have enough speed to extend away safely, what are you supposed to do? Do you have to pull up early to prevent overshooting altogether? Or is there something else?

Maybe a topic on twin engine planes or something like that in the future, just an idea tho. Also quality video as always.

Dude... amazing video!!!

Great video! When I saw it I first thought “great another BS video how P-51 had laminar flow and all that false hopefulness of the P-51 fans :) I’m happy you touched on the reality of the design. Only thing I would add at the part you explain laminar flow over the P-51’s wings would be “P-51 had laminar flow wing design witch doesn’t mean it has laminar flow wings” still love your video’s and can’t wait for the next one :)

Is there a more advanced video that explains how/why streamlining is not an example of laminar air flow when considering the purist definition of laminar air flow which is how layers of air move against/with each other and not how air moves against a solid?

Aren't laminar and transonic airfoils similar in shape? Maybe that was the actual advantage?

Didn't the first post war fighter jets also use a laminar flow wing? Because I remember reading or hearing that the F-86 Sabre also had a laminar foil.

4:15 graph why

Ever heard of the Bachem Natter Viper? Anyways, it supposedly broke the sound barrier in a dive. A very fast one. What beats me is how it's stubby little wings kept it up. Could you explain how that could work?

At around 8:30 you show where laminar flow should be more likely/possible. Dont wingtip vortices disrupt the laminar flow as well close to the wingtips? Love these technical videos.

Why you don't have a single video with any Lavochkin? I was trying to learn how to play as soviets and didn't find much.

The Seversky wing on the P-47 and its forebears is credited with its success. If its benefit isn't laminar flow, what IS its benefit?

Hey you should fly the seafire fr47!

Off topic. Can dimple apply to a car can make it more efficient?

Adam, can you make a video on how to counter the rocket ship that is the f89b and the f89d

Hey Adam. Though I would have zero clue what you would be saying I'd love to see a french channel of yours. Like these videos in french. Well that's if you could speak good french but I think that's either your first or second language. Also could you do a video on how some planes are better at energy retention than others? If you haven't done a video on that

Can you play the sea fire fr 47 since the downtown it’s good

so is it better for P-51 to use traditional wing instead?

Is laminar flow affected by wing geometry or does it only correlate with airfoil shape? For example is it possible to achieve laminar flow with an elliptical wing?

nice video!

Hi Adam, I assume ur still a college student. Are u an engineering major? I took physics 1 and 2 last year and I actually understood a good amount of what u were talking about in this video haha

Do wing slats help with maintaining laminar flow? and can it affect turning performance? is it possible that one can calculate the amount of lift generated only using surface area regardless of airfoil?

Hey can you Bring the bf109 g6 with the additional cannons, I made us 6 kills in a game

YOOO THIS IS GONNA BE GOOD

I was just learning this for my exam Thanks man. What exactly are you studying?

Does war thunder actually apply these physics in game?

2 things, is ur profile pic the arrow? And what are your thoughts on a Canadian tech tree/ do you think the arrow could come to the game in the future?

I mean, formula 1 cars are made to produce as much Downforce as possible with the least drag possible, and they have many vortex generators so that can guide the air wherever they want it to go, just because it produces some kind of drag, does not mean it’s not aerodynamic

Hey um I’ve been struggling to use my Sabre f-35 and I was wondering if u could either explain how to use it or make a video on it thx!