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Why Delta Canards are so popular (long format)

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Millennium 7 * HistoryTech

Millennium 7 * HistoryTech

Күн бұрын

This is a long format video about delta canards fighters like the Eurofighter Typhoon, the Rafale or the Gripen. A lot of details about the aerodynamics!
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Пікірлер: 148
@robertkb64
@robertkb64 Жыл бұрын
My son asked me this question last year when he was 6, I told him it was because delta wings are inherently unstable at convenient angles of attack in subsonic flight so we couldn’t use them until we had computers fast enough to replace direct control with fly by wire. Then he asked me about flight stability and what subsonic meant…. 3 months later we were standing on USS Midway in San Diego harbor so I could show him in person. The entire time in between involved me brushing up on fluid dynamics and having video calls with an uncle who worked on the Saturn 5 when he was a young engineer. Moral of the story: teach your kids, but be wary of the rabbit hole you may be going down.
@godzillakingofthegame2148
@godzillakingofthegame2148 9 ай бұрын
Great job, Dad.
@whiterose5246
@whiterose5246 Жыл бұрын
for the algorithm.
@Mountain-Man-3000
@Mountain-Man-3000 Жыл бұрын
FOR THE ALGORITHM!!!!!
@whiterose5246
@whiterose5246 Жыл бұрын
@@Mountain-Man-3000 Slava Algorithmi!
@sgt.grinch3299
@sgt.grinch3299 Жыл бұрын
For Al Gore’s rhythm
@hobog
@hobog Жыл бұрын
Hail the Algorithm!
@vladimirmihnev9702
@vladimirmihnev9702 Жыл бұрын
🤣
@jimkenealy6448
@jimkenealy6448 Жыл бұрын
I forgot how much I loved tracing paper. Used so effectively in these videos.
@mrp6530
@mrp6530 3 ай бұрын
According to a Dassault engineer, the position of the canards near the wing root of the Rafale are only intended to control the vortex above the wing while the canards of the Eurofighter, further forward, are mainly there to increase the maneuverability of the aircraft by generating a controllable lift force at the front of the aircraft. Same design, different purpose.
@MrAra818
@MrAra818 Жыл бұрын
Consistently the most educational, thorough, and well-explained videos. Thank you.
@benr3346
@benr3346 Жыл бұрын
Hey millennium can you ask OTIS, how did the Russian Su-27 hit the MQ-9 reaper in the propeller and not break itself in the process? You think it hit it with the very expensive radar of thr nose? Say hi to otis!
@kevinkilleen6375
@kevinkilleen6375 Жыл бұрын
I wish I could elaborate, but you said it all.
@ceciliaieav
@ceciliaieav Жыл бұрын
The wings of the JAS-39 "Echo" are completely different from the JAS-39 "Charlie" in design, profile and construction. I can't say if this is because they are now made of composite material or also because of the additional tanks, but the Gripen-E has a much robust fuselage body than the Gripen-C... On the internet there are AKAER drawings that clearly show the structural difference in size, design and material engineering.
@atlet1
@atlet1 Жыл бұрын
Gripen E have wider spanwith and more internal fuel. This is why the body is wider and bulkier.
@LuvhNio
@LuvhNio Жыл бұрын
@@atlet1 Let's not forget the repositioned main landing gear, which has been moved from the fuselage in the Charlie to the wings in the Echo.
@Moontrue1on1
@Moontrue1on1 Жыл бұрын
it alwsow have antenna for data-link and warfear built in to the body of the wings. in the new video Saab relesed you can see the patern of the antena on the wings etc
@animeemail8902
@animeemail8902 15 күн бұрын
Isn’t the Gripen E/F to the original Gripen A/B/C/D like how the Super Hornet is to the original Hornet, as in they’re both completely different aircraft despite sharing the same name with their original counterparts.
@znail4675
@znail4675 Жыл бұрын
One rather important plane missed in this video is the J 35 Draken that was also around at the same time as those early delta wings, but wasn't just a delta, but what is now called double delta as it got two different angles on the delta wing. This was rather ahead of it's time and shared many of the advantages of the canard delta wing configuration. There was a NASA study where they took an F-16 turned it easily modified and tested lots of different wing configurations, even strange ones like forward swept wings. The two they found were the most efficient was the canard delta and the double delta ones that had similar performance data. One rather interesting thing about this is that it's quite possible we will get a return of this configuration as while canard delta have stealth issues so are the double delta naturally stealthy and well suited for internal stores as well.
@peceed
@peceed Жыл бұрын
F-22/F-35 look like double delta, if you consider inlets as part of the wing.
@basilb4733
@basilb4733 Жыл бұрын
Yes, Saab often was ahead of its time. The first application of a double delta (in a mild form) seems to have been the Henschel P 135.
@znail4675
@znail4675 Жыл бұрын
@@peceed Only if you ignore that the inlets are not delta shaped but boxes in addition to not being wings. J-35 intakes are really small so are part of the leading edge of the wings. That is not a requirement for the double delta as the NASA variant used the regular F-16 intakes. The key part is the two angles in the double delta are optimised for different speeds making it more flexible then a regular delta wing.
@peceed
@peceed Жыл бұрын
@@znail4675 Difference is not that big. And I wrote about similarities that are apparent, not the differences. Anyway this shape is extremely popular among all stealth constructions, and the main reason is the high aerodynamic efficiency of this shape. Everyone tries something different and always micro-f-22 emerges after aerodynamic refinements.
@MrDDiRusso
@MrDDiRusso Жыл бұрын
Saab Viggen: if one delta wing is good, double delta wings are better!
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
Double delta would be the 35 Draken, 37 Viggen brought the canards :)
@rockapedra1130
@rockapedra1130 Жыл бұрын
Wow! I really enjoyed this format with narrated drawings! Another improvement to an already excellent channel! 👍👍👍👏👏👏
@thomaszhang3101
@thomaszhang3101 Жыл бұрын
The intro could be a villain’s beginning story 😂
@alexlohan2988
@alexlohan2988 Жыл бұрын
We here on millennium 7* comment for the algorithm. Most underrated military tech channel on KZbin.
@cannonfodder4376
@cannonfodder4376 Жыл бұрын
Ah the Delta wing videos, easily the video that convinced me this was a channel to follow. The best on KZbin on easily explained and comprehensive aeronautics.
@Mountain-Man-3000
@Mountain-Man-3000 Жыл бұрын
Still sad Canada didn't choose Gripen.
@muskreality
@muskreality Жыл бұрын
Delta canards configurations are really awesome
@DavidLee-df888
@DavidLee-df888 Жыл бұрын
Great video on my second favourite aircraft topic, late cold war/early modern delta-canards. Very interesting as usual, although I still want a bit more about the reasoning between close-coupled canard(Rafale) Vs long-coupled(Euro fighter)
@JosephSuber31st
@JosephSuber31st Жыл бұрын
Great video, more interesting and useful to enquiring minds than 99% of "creative" content
@tonysu8860
@tonysu8860 Жыл бұрын
I have lots of questions and contentions with what is in this video... Yes, a number of if not all the characteristics of a delta wing are true but... - Are not leading wing extensions an essential part of nearly all wingplans nowadays? It's my impression that it's an essential part along with other extendable wing parts like flaps, trailing slats and spoilers that modify the overall size, shape and even airfoil to what is considered optimal for the given speed and this is all implemented not only in miltary but also commercial aircraft. It was impression this is the true reason why swing wings no longer exist as the better way to modify the wingplan and airfoil radically through numerous smaller changes in flight rather than major hinged pieces being moved. Incidentally, this is also what I consider the possibly fatal flaw of the 737-MAX design, which introduces a new way to rely on fly-by-wire using sensory inputs during low and slow speeds rather than changing the wingplan and airfoil. The idea might have had value if implemented correctly but Boeing's hubris to cut costs on sensor systems made the 737-MAX unreliable and suffered disasters. - A big missing piece pf this video is covering why modern delta canards aren't seen in probably in most popular fighter jet of the last 40 years... The F-16. Yes, it was designed just prior to the universal designs of delta canards. But, it should also be recognized that General Dynamics built F-16 delta testbeds and although there have been plenty of speculation and discussion in the real world, General Dynamics never changed over to any kind of delta configuration. It seems that the fly-by-wire that's touted in this video to solve so many delta canard problems also makes the F-16 possible to fly at all. It's said that the delta wing indisputably would enable the F-16 to carry a vastly heavier load but obviously the decision was made that the drawbacks exceeded the benefits of the original stubby wing design the F-16 still has today. Something is better about the F-16 without a delta wing than with it. - This video is probably very wrong about the supposed incompatibility between a delta wing and stealth. If you look at both the F-22 and F-35 wingplans, they're both the uniquely American preference for a modified delta "diamond" design. The only difference between the diamond and pure delta designs are the trailing edges. There is almost certainly some difference in the airfoil, too. It should be noted also that the canards probably exist more for maneuverability and lift only in extreme attitudes than in ordinary flight when you compare to American designs without canards. American designs instead implement enlarged tail surfaces to provide sufficient control, especially the super sized V shaped tail surfaces of the F-22. Compare the American designs with for instance the Chinese J-20 and you'll notice how tiny the tail surfaces are for the Chinese aircraft by comparison.
@Fish-ub3wn
@Fish-ub3wn Жыл бұрын
Very comprehensive, nice summary. Loved it.
@rainhart458
@rainhart458 Жыл бұрын
I think you should make your aircraft prints available for us to download and colour in ;-)
@vdotme
@vdotme Жыл бұрын
This guy talks about aeronautical engineering like I understand it. I listen intently like I understand it. I think that means I'm smart. Yes.....I absolutely am. 🤗
@NATObait
@NATObait Жыл бұрын
The Mirage III was also based on the Fairey Delta 2 and the testing done at Cazaux Air Base ( 47 test flights with Dassault engineers participating in the trials ) . Dassault was able to see the future and was able to incorporate and confirm his ideas that led to the Mirage family of Delta aircraft.
@leneanderthalien
@leneanderthalien Жыл бұрын
Was not "based" on the Fairey, only compared, was a little bit inspired on the F102 delta dagger: you forgott that the delta wing was studied sinze long time in France (sinze the mid 30's)
@TooliusTech
@TooliusTech Жыл бұрын
Please cover the Gripen / Rafale / Eurofighter / J10 / LCA mkI and MkII. Thank you soo much !
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
The Eurofighter is ongoing, everything else has been covered already with plenty of detail.
@TooliusTech
@TooliusTech Жыл бұрын
@@Millennium7HistoryTech Yep agreed.. lots of in detail videios already about those types ! And thank you soo much for all that !!
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
@@TooliusTech Jepp, a comparison of the various canards would definitely be appreciated :)
@Trials_By_Errors
@Trials_By_Errors Жыл бұрын
Great video.
@christiankrueger8048
@christiankrueger8048 Жыл бұрын
Thank you, Sir!
@LeonAust
@LeonAust 8 күн бұрын
Canards are on on dated 4.5 gen aircraft fighters like Eurofighter, Rafael, for yesterday's war but not on future 5th 6th gen aircraft!
@e911disp
@e911disp Жыл бұрын
I think we are a similar age. I was born in 1969. I got into aircraft from Jane's ATF and Jane's Fighter Anthology video game. And flight simulators. Love your content.
@happysalesguy
@happysalesguy Жыл бұрын
Great analysis, answered many of my questions.
@JB-qg2uc
@JB-qg2uc Жыл бұрын
The lift theory based on bernoulli principle is one of the misunderstandings of aerodynamic theory. Even as this is taught in universities today. There is no reason why particles passing on the top of the wing profile must reach the back edge of the wing at the same time as particles moving below the wing. This has also not been demonstrated to occur. What the wing does is, that it directs the airflow downwards. As postulated in Newton III, the counterforce caused by the air then causes lift.
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
Wouldn't such a downflow be clearly visible in windtunnel tests?
@JB-qg2uc
@JB-qg2uc Жыл бұрын
@@johanmetreus1268 You can see that in smoke tests. You can see a good explanation in the video by Lesics "How do Wings generate LIFT?"
@greggstrasser5791
@greggstrasser5791 Жыл бұрын
Everything they tell you is a lie. They told us air gets less dense as it moves faster over the top. THEN... why do have have wind under helicopters?
@citizenblue
@citizenblue Жыл бұрын
That intro story about Your dad is why I smashed the like button! I have very similar stories
@dannywest7587
@dannywest7587 7 ай бұрын
I have no idea as it is only going to end up as crispy Duck !!
@forzaelite1248
@forzaelite1248 Жыл бұрын
Can you do a video on trapezoidal wings? I've always seen them as a kind of fusion between deltas and reverse sweep wings but I'm not sure if they give the benefits of both worlds; the F22 and F35 seem to use them so maybe it's the best option when stealth is involved?
@shadowgunner69
@shadowgunner69 Жыл бұрын
As a Delta fan, my compliments M7*! I do have a question based on the realities of early delta wing fighters. Delta fighters could out turn most of their adversaries. But, the fly in the ointment was in a sustained turn, where the delta would begin to lose lift within the first full circle. I know this is true, but perhaps you could expound on the reasons. TIA
@svartmetall
@svartmetall Жыл бұрын
Fascinating video. Thank you!
@honeybadgerbomb4469
@honeybadgerbomb4469 13 күн бұрын
Mirage 2000 my beloved
@RayoDalal
@RayoDalal Жыл бұрын
Hey another video... :) Im just happy to see you looking healthy again Take care and keep well
@grantchang81976
@grantchang81976 Жыл бұрын
sweeping the wings forward and canardand YF23 blackwidow Vshaped diagonal V cleave tail
@markcedydabest5692
@markcedydabest5692 Жыл бұрын
excelent info.
@michaelmueller9635
@michaelmueller9635 Жыл бұрын
Great stuff. Can you plz mention the x-29 in some future video? It's a so interesting plane and I would love to her more about it 🙂
@michaelmueller9635
@michaelmueller9635 Жыл бұрын
PS.: Oh, now I see, you already did: Could RUSSIA USE this NOW? - Why Berkut and X-29 are a dead end. - KZbin kzbin.info/www/bejne/a4SlpKN7o9iai8U
@doncalypso
@doncalypso Жыл бұрын
Guess the IAI Lavi was the closest we came to seeing a delta-canard esque F-16.
@thomasbessis2809
@thomasbessis2809 Жыл бұрын
F-16XL, no canards though
@varun2250
@varun2250 Жыл бұрын
J10?
@Patrick-nw4xq
@Patrick-nw4xq Жыл бұрын
Great thank you on this amazing video.
@nilswedin8480
@nilswedin8480 Жыл бұрын
I miss the big reason for Canards. The low speed during landing and take-off. Short landing and take-off runways. A great tactical advantage.
@DrittAdrAtta
@DrittAdrAtta Жыл бұрын
Excellent explanation. It would be nice if you could explain what makes a thinner wing heavier by design than a thick wing, if I understood correctly that part of your video. Maybe some time in another video. Thanks again for your fantastic work on this channel.
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
Noted
@godthunder4732
@godthunder4732 Жыл бұрын
You should make a video on the MiG-29, maybe more specifically about how a twin engine Fighter could cost such a low amount as to be a competitor to the F-16.
@R.-.
@R.-. Жыл бұрын
Does the SR-71A Blackbird function as a deltawing even though it was the first attempt at stealth (32:00)? Do the engines interrupt the vortex creation (5:44)? Does the SR-71A fuselage have lerx (33:44) properties?
@jacobbaumgardner3406
@jacobbaumgardner3406 Жыл бұрын
28:30 I don’t know if this is similar but I’ve seen the F-35’s trailing edge flaps elevate upward even when pitching up. Is is to generate more lift or perhaps is it to decrease the load the wing is bearing?
@atlet1
@atlet1 Жыл бұрын
To pich up with a long wing, it helps to have the flaps up. The aerodynamics center is moved forward this way.
@ashwinrajan6395
@ashwinrajan6395 Жыл бұрын
I would appreciate it if you could cover exotic expiremental aircraft like the thunderscreech etc...
@darkofc
@darkofc Жыл бұрын
👍👍 worth repeating and refreshing ..
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
Thanks a lot 😊
@appa609
@appa609 Жыл бұрын
ok but F-15's, 16's, 18's, 22's, 35's also generate those lifting root vortices. So do Mig-29's and Su-27's. Why do we not call them delta wing? It seems to me the term is somewhere between nebulous and meaningless.
@bastadimasta
@bastadimasta Жыл бұрын
Delta wings are so inefficient that they leak air from the bottom surface of the wing to the top surface. This flaw that makes them more efficient.
@bastadimasta
@bastadimasta Жыл бұрын
@Otten Star the leak turns into a vortex which makes it possible to have a continuous airflow at high angle of attack.
@leneanderthalien
@leneanderthalien Жыл бұрын
see by Dassault (or on the Concorde) what they make to improve the Delta wing design and avoid air leak even at high angle of attack...
@bastadimasta
@bastadimasta Жыл бұрын
@@leneanderthalien the air leak is necessary for delta wing to create lift, especially at high angle of attacks. Concorde's ogival delta wings allowed the vortex caused by this leak to adhere to the upper surface of the wing at low speeds.
@alainc.9000
@alainc.9000 Жыл бұрын
As always very interesting.
@leneanderthalien
@leneanderthalien Жыл бұрын
The Canard on the Rafale did in addition improve to airflow over the main wings at high angles of attack, it's not so the case on some other delta winged fighters...
@tonysu8860
@tonysu8860 Жыл бұрын
In a close coupled configuration, a canard might serve the same purpose as leading wing extensions to improve the laminar flow and decrease flow separation at high angles of attack but the question might be... Why not just implement leading wing extensions which would probably be more aerodynamically efficient with less drag?
@kevinl2482
@kevinl2482 Жыл бұрын
1:27 lmao I never thought of this when I watched the original video but that's like my mom. I'll be explaining how the delta is different than some other design and my mom will just be like, "okay, they still all look the same to me."
@lorenzodrovandi1614
@lorenzodrovandi1614 Жыл бұрын
Amazing video
@douginorlando6260
@douginorlando6260 Жыл бұрын
Canards have fundamental advantages. I don’t know why Airbus or Boeing never designed a commercial passenger jet with a good sized canard. Less drag, less wing loading for lower landing speeds, direct control of how fast the nose rotates down at touchdown, possibly better handling to compensate for a lost engine. Imagine the backward force on the landing gear strut caused by the nose wheel having to spin up from 0 rpm to landing speeds in the length of a runway skid mark. This backward force on the landing strut creates a huge instantaneous structural load in a sideways direction. And when the nose is dropping twice as fast, then the nose wheel must rotate up to landing speed in half the skid mark distance, thus doubling the instantaneous lateral force on the nose wheel strut.
@leneanderthalien
@leneanderthalien Жыл бұрын
canard are close useless on a commercial aircraft because they are naturaly stable (CG forward the CL) and doest need agility, modern fighter aircrafts need to be very agile, and are UNSTABLE (CG backward the Center of Lift)and are impossible to fly without fly by wire...
@robertkrcmar557
@robertkrcmar557 Жыл бұрын
Delta wings are the most important for a fighter jet. That's why F14 exists.
@JinKee
@JinKee Жыл бұрын
Can we talk about the Mig 1.41?
@felipe69420
@felipe69420 Жыл бұрын
Audio is super quiet on this
@-qsprey7881
@-qsprey7881 Жыл бұрын
Hey! Remember what people said? Yes! The j20 is not invisible . . you finally said that!As one would expect.
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
The F-35 is not, the F-22 is not etc etc etc
@Mungobohne1
@Mungobohne1 Жыл бұрын
He said this I think one year ago already.
@moc0_o
@moc0_o Жыл бұрын
Makes even me understand 😅
@julianizydorczak5258
@julianizydorczak5258 Жыл бұрын
Can you give your opinion on FA-50
@zofe
@zofe Жыл бұрын
FBW is a MUST for a fully-moving canard fighter-jet due to the inherent instability of this geometry. Only since about 1980 in the West, such capabilities started being developed. Radar-Stealth contradicts canards. Pure-Delta is only for very-high landing-approach speeds, thus NOT for carriers or frontal runways. Also not for Close Air Support (CAS) missions e.g. A-10, Su-25. Not even with Delta-Canard. Delta = hugh drag due to long wing-root chord, thus shorter mission-radius/persistence.
@tonyduncan9852
@tonyduncan9852 Жыл бұрын
Thanks for the info. Cheers.
@davidlaw9686
@davidlaw9686 Жыл бұрын
It remember some people had citicized canards used in the Chinese aircraft. So what now?
@keirfarnum6811
@keirfarnum6811 Жыл бұрын
Alpha canards only! 😁
@Opusss
@Opusss Жыл бұрын
Canards always felt like a crutch to me. I'm sure this has a lot to do with my interest in military aircraft really taking off around the same time as stealth was taking off. I think lifting body designs will be the path of the future.
@lubbas72
@lubbas72 Жыл бұрын
I’m not sure but I think I’ve read that the Saab Viggen canard control surfaces was only used as landing flaps and not for combat manouvers?
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
True. It is a long story...
@SPak-rt2gb
@SPak-rt2gb Жыл бұрын
You're not going to talk about the new photo of the B-21
@kennvillegas2014
@kennvillegas2014 Жыл бұрын
Salúd! Stay in Health & get better
@atlet1
@atlet1 Жыл бұрын
You forgot to mention that the cold war was fought in the air over the Baltic sea by the Swedish air force in the J-35 draken delta wing M2+ supercruise g Fighter, which was STOL, could use common car roads and do the cobra maneuver since 1960. Sweden had more than half of Europes border to Soviet union. The pilots reported it continued to accelerate, even while gaining altitudes, well beyond M2. But the engine was damaged by too high speed, so the limit could not be tested. AJ-35 Viggen had fixed canards with a flap from 1971, as the first delta canard fighter. I even miss the possibility of all moving canard delta configuration to change the aerodynamic center and the possibility of fly by wire to place the engine far back for better airodynamics.
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
Draken did not go supersonic without afterburner in level flight, and it made the "Short parade" manoeuvre and not the "Cobra". Sweden at the time had no border with the Soviet Union, though the line of conflict in case of war would be about the sae as the distance between Ystad and Milano in Italy. If the engine gets damaged by the speed, the limit has been exceeded, don't you think? But yes, the Swedish aircraft were mostly ignored in the historical section of the video.
@atlet1
@atlet1 Жыл бұрын
@@johanmetreus1268 False! Draken did go supersonic in level flight without the use of after burner. "Kort parad" was the Swedish name för the maneuver that later was called cobra. Sweden had sea border with the Warszaw pact , but not so long. Strategic and tactical, the border was along the entire Swedish east coast. The Finish border to Soviet union was supposed to be defended by Sweden and Finland. But the fightings happened over the Baltic sea.
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
@@atlet1 "Draken did go supersonic in level flight without the use of after burner." Need to ask you for a source on this as neither Gunnar Lindquist or Ulf Frieberg mention it. "Sweden had sea border with the Warszaw pact" Simple look at the map says there was no border, as there's international water around Sweden except with Denmark, Norway and Finland.
@atlet1
@atlet1 Жыл бұрын
@@johanmetreus1268 there are more border than what can be seen on usuayl maps. I don't remember any documents on Draken super cruise, but it's well known by every knowable person, including pilots.
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
@@atlet1 "there are more border than what can be seen on usuayl maps." No, there is not. Either there is territory or territorial waters separated by a border, or there isn't. "well known by every knowable person, " Do look up the names I mentioned above, and tell me someone more knowledgeable.
@maurotassinarizugnitauro2990
@maurotassinarizugnitauro2990 Жыл бұрын
Scuola Superiore Aerospaziale Generale Broglio 1985 ❤️
@foshizzlfizzl
@foshizzlfizzl Жыл бұрын
Probably, a stupid question, because I'm writing it before I watched the video, cause I'm not sure about the delta wing.. Yet. Because I'm sure I will be after your video. But isn't the F-22, the F-35, the Su-57 also kind of an delta wing design? Looking on the blueprints from above the wings are 90% a perfect triangle isn't it?
@tafaragadze6432
@tafaragadze6432 Жыл бұрын
I got lost at computer controlled artificial stability.
@stephenfowler4115
@stephenfowler4115 Жыл бұрын
No the airfoil doesn't make the air above the wing move faster than the air below. Just the opposite. The shape of the wing obstructs the flow over the top of the wing creating a low pressure on the upper part of the wing compared to underneath.
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
The exact mechanisms are still highly debated, but the airfoil model makes the upper side significantly longer than than the straight underside. Now consider a body of air, where it gets separated by the wing at point A and then have to travel to point B behind the wing where it reunites. While the lower airstream travels in a straight line from A to B (or rather, the wing travels through the body of air from B to A, cleaving the body of air but let's assume it's the air moving), the upper stream has to travel the curved upper surface. The longer distance needed to be travelled in the same time means the upper stream must move faster, and the gas pressure of all gasses decreases with the increase of velocity. If you look at the English Wikipedia article about Bernoulli's principle, the thinner part in the venturi meter, where the air must move a lot faster in order to let through the same volume, gives a lot lower pressure compared to the thicker part of the venturi tube.
@stephenfowler4115
@stephenfowler4115 Жыл бұрын
@@johanmetreus1268 that is the reality. The wing is moving through the air. In a wind tunnel those principles apply. But on a flying aircraft though the effect is similar the mechanics are different. The air is traveling up and down more than front to back it also at least on swept wing aircraft moves sideways along the wing. In either case the lift is produced by a pressure difference between upper and lower surfaces. Moving air having less pressure makes sense because the molecules are traveling in the direction precludes kinetic energy transfer in any direction except the direction of motion. For air that's stationary the pressure is uniform in all directions because the motion of the molecules is random. For a wing moving instead of the air the wing shape imparts a velocity to the perpendicular to the direction of motion sort of. You can think of it as traveling faster across the upper surface but the time required for two molecules starting side by side to go from the leading edge of the wing to the trailing edge when one goes over and the other goes under is unlikely to be the same.
@tonysu8860
@tonysu8860 Жыл бұрын
@@stephenfowler4115 My understanding is that your thoughts are only partially valid. By and large because the wing is traveling forwards through the fluid/air, the majority of forces are in that direction. The lateral forces you describe happen but at a far less degree than the main forces. how much this happens is also related to the sweep of the wing so for example a wing that is not swept at all experiences minimal lateral flow and if even swept forward would experience lateral flows in the direction opposite that of a normally swept wing. In nearly all airfoils though, the upper surface will be a longer distance over the underside which will force flow to be faster over the top surface, causing a low pressure "suction" lift. But some airfoils don't rely on this principle but might rely instead on an angle of attack that produces a Newtonian positive "push" on the underside of the airfoil.
@stephenfowler4115
@stephenfowler4115 Жыл бұрын
@@tonysu8860 Air moving through wind tunnel has it's own momentum. It's behavior has to be different than relatively stationary air that has a wing moving through it. Air at the leading edges of the wing is being compressed while air behind the max thickness of the wing is expanding. The lift vector moves aft with increasing speed of the aircraft. While wind tunnel results are similar to what happens in flight they aren't exactly the same because the the mechanisms that produce them are different.
@Zetler
@Zetler Жыл бұрын
I really hate the word "foreplanes". Its a tricky one to get right.
@elbuglione
@elbuglione Жыл бұрын
Volume is to low.
@WildBillCox13
@WildBillCox13 Жыл бұрын
Liked and shared.
@himanshusingh5214
@himanshusingh5214 Жыл бұрын
f
@H3x4r35
@H3x4r35 Жыл бұрын
The origin of the delta wing in Germany??? Roland Payen is rolling in his grave...
@user-qn3xu5ee3t
@user-qn3xu5ee3t Жыл бұрын
There's one little (well, quite huge tbh) interesting plane of similar configuration MiG-1.44 JIC ;)
@tinolino58
@tinolino58 Жыл бұрын
Bernouli is overrated. Super Video
@amjadmoosa5609
@amjadmoosa5609 Жыл бұрын
first comment
@sgt.grinch3299
@sgt.grinch3299 Жыл бұрын
Are you sure?
@vladimirmihnev9702
@vladimirmihnev9702 Жыл бұрын
So basically everyone is coping from the Chinese? 🤯
@dicksontong6498
@dicksontong6498 Жыл бұрын
17:30 Because of the Chinese copy
@Moontrue1on1
@Moontrue1on1 Жыл бұрын
who cares about delta J35 jumpet to dubbel delta in 1955 first airplane to do the Kort Parad (cobra mauver) and had a mechanichal computer data link system.
@scottmarquardt3575
@scottmarquardt3575 Жыл бұрын
I hope you stay away from huge New York steaks, my mother got to marry a Boeing engineer for a year before he passed, left her a million. I only met him once and he had the same cut I did. She told me he was the only guy she ever loved, she would have died too if not for the heart break $.
@Warpathallthetime
@Warpathallthetime Жыл бұрын
I am liking your content more an more. But I do think it is hard as your monotone voice makes it difficult to consume. This is not something correctable I know. The attention to detail can make my attention wonder. But otherwise enjoyable in small doses.
@jeova0sanctus0unus
@jeova0sanctus0unus Жыл бұрын
sorry but the video is way too quiet, id like to watch it but i can not understand you over the sound of my -bad decisions- tinitus.
@Millennium7HistoryTech
@Millennium7HistoryTech Жыл бұрын
Sorry!
@johanmetreus1268
@johanmetreus1268 Жыл бұрын
Enabling the Auto-captions helps a bit, though there are some hilarious errors in that.
@MauricioHernandez-de8is
@MauricioHernandez-de8is 6 ай бұрын
Are u working at NASA, boeing or just an internet freak?
@peterparker5484
@peterparker5484 Жыл бұрын
I am that fighter jet kid ,too 🤣🤣🤣 from 3 years old 🤣
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