What is a "Dutch Roll"?!

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So, How "Dutch" is a " Dutch roll" and can it be dangerous. What roll does the "Yaw damper" have to do with all of this?
In todays video I will be talking about a fascinating aerodynamic occurance called the "Dutch Roll". I will explain how it is connected to the stability of the aircraft as well as the different axis of movements that are involved in it.
As always, you can ask me questions or comment directly to me inside the FREE Mentour Aviation app. Use the links below to download it and lets start talking aviation! 👇
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I want to send a huge "Thank YOU" to the channels and articles used to create todays video. You can view the full videos using the links below 👇
Flight-club (Aircraft axes explained)
• Axes of movement
Bitikofl (Dutch roll)
• Dutchroll
Boldmethod (Explaining dutch roll)
www.boldmethod.com/learn-to-f...
ClassicDutchroll (Dutch skating)
• Skating the Dutch Roll...
Tonkatsu 298 (JAS 39 Gripen)
• RIAT2018 JAS-39 Gripen...
Visit my website www.mentourpilot.com/news for the latest aviation news!

[@Otacatapetl]

Your dog should be a pretty good pilot by now.

[@booooooooooooooooooooooo]

It took me a second to realize you typed pilot instead of pillow

[@nwazuemunachi6339]

😅😅 LOL.

[@harmonicajohn1059]

Trained aircrew dog… bites pilot if they do something wrong.

[@oppamaclare]

I don't think he's interested unless you can eat a Dutch Roll.

[@martinsachs3837]

doubt he can pass the drug test...this pub is on benzos

[@robertansley6331]

Cute little dog was showing us the _YAWN_ axis where she ended up remarkably stable on his port side.

[@bikkies]

This is why I love this channel. A quick ad at the beginning, a quick ad at the end, and in the middle is a nice calm and informative explanation. Just like a coordinated turn, I watch a coordinated video. Putting in just enough technical meat to keep me flying smoothly til I land safely and a little more educated at the end. I despise videos where I'm being constantly spammed with adverts just when I'm starting to get into the zone, even interrupting mid-syllable. Thank you for not being that person!

[@kratokat3431]

This guy made me an aviation enthusiast❤

[@mog882]

I came up with the term “feathered fish” while I was tripping on ketamine and a ketamine clinic. It just popped into my head, “my fine ‘feathered fish.” I thought it might’ve been a significant find so I did a web search for “feathered fish.” Now you know this.

[@topsu4896]

Welcome❤️

[@raidzor5452]

NPC #7125366 I once pissed in a hairdryer

[@Trauncher]

If you don't fly., contact your local airport flight school, and ask them if they have any introductory flights available.. I know the EAA at one time sponsored a 1/2 price first hour.. Just about anyone can do it. go take a lesson. you'll never forget it! :-)

[@michaell7149]

I find myself staring at your dogs during these videos! As an aviation enthusiast and frequent traveler love this channel. Thank you!

[@sylviasanchez7500]

They are adorable. There is a whole back story going on there with Patches N Molly and the crew there at Petter's crib, lol.

[@jdwilliams518]

Sometimes they go behind him and stare at the back wall for no apparent reason..

[@alc7692]

There's a pilot technique I learned during my B737 flight test work that will manually dampen out the dutch roll. With the yaw damper inop, momentarily just turn the yoke into the rising wing (for just a quarter of a second, that is), and return back to neutral. This raises the flight spoilers on the rising wing, dampening out the yaw effect. Repeat as necessary ...

[@bitchpudding8104]

They asked me on my first airline interview how to counteract dutch roll if the yaw dampers were inop! Thank you for this comment 🙏

[@birdman4274]

250 milliseconds LMFAO 😂😂

[@mysock351C]

@@birdman4274 I think most people can handle that unless they have the reaction time of a slug. At any rate, aerodynamically its really just to try to level them out slightly and limit the side-slip directly rather than guessing using the rudder.

[@birdman4274]

@@mysock351C Did he measure it with an atomic clock. What error can we apply to the 250ms ?

[@mysock351C]

​@@birdman4274 Using a simple fraction such as "1/4" implies low precision. People generally understand that a "quarter second" indicates a relatively short amount of time in our subjective perceptual terms. Generally anything less than one second will likely work. This is NOT the same as "250ms" which implies a precision down to 1ms. This is actually known as _significant figures_ (or significant digits) and is an important concept people should have learned in school or college. Certainly most airline pilots would have, and know that it just means "Don't turn the damn yoke for as long as you like. You'll crash the plane."

[@DERP_Squad]

A Dutch Roll is a specific order in a Dutch 'coffee shop'.

[@tyrionlannister6769]

"Dutch Roll"....Euro version of Chinese Egg Roll...!

[@devilsoffspring5519]

@@tyrionlannister6769 I think he was talking about joints... not the kind on aircraft made with rivets, the kind you smoke :)

[@SuperPhunThyme9]

Are they cooked in a Dutch Oven?

[@jamescollier3]

If you Google images, it is

[@zczvcb]

As a technical Aircraft engineer and aerodynamic instructor , this explanation is 100times better than many I have seen and read. I always like to give practical examples to students to understand such phenomenons . In the technical world , we always perform checks on damper system for force feedback etc.

[@AngelRoblox1234]

Brilliant presentation. Clear, concise, and really interesting.

[@michaelthibault7886]

I'm so happy I found you Captain!I just learn so much like how fast things go wrong.Even on auto pilot,it disengages then if your incapacitated,the first officer panics and is usually not ready to do everything like checklists and flying...

[@EleanorPeterson]

A Dutch roll is malicious; a Swiss roll is delicious. ;-)

[@IansModRite]

A beauty of a comment. Thank you elli

[@thermalpower6277]

fantastic interpretation........ this guy has a tremendous clarity on the subject matter...

[@YammoYammamoto]

Been flying different simulators online for over 10 years.... ....every episode there's something new to learn. Thank you! :)

[@CHESSmaster69SH]

I love your videos! I can tell that you have a deeper understanding of the material you present. However, you explain it in a way that a non-aviation minded person can understand it. I just started working on my CFI and that's something I am practicing. Don't want to overload students with too much knowledge. Your videos help me learn how to explain things in a simple way.

[@WilliamDavidKirbyUK]

Petter, these videos of yours are so much more useful than all the classes that I might - or might not - have taken. A great explanation of stability.

[@michaeldougfir9807]

Not that it is important here, but when I was a helmsman on a ship, we too had a rudder angle indicator. This reminded me of it for the first time in many years. Thank you for a good explanation. I am not a pilot and feel that this was made very clear even to me. Thank you!

[@pawesawicki3237]

This episode was brilliant :D more about aerodynamics please!

[@Zany4God]

Another great vlog. I'd never heard of the Dutch Roll. I can see how important it is to let the plane do the correcting. Thank you.

[@MrDentist89]

This is one of the best videos you have done so far.. I love those basic knowledge videos and i really like to have more of such contents.. Basic ATPL subjects and aerodynamics are really a great way to understand aviation as a science.. Thank you so much for this piece of information.. You are doing an absolutely fantastic videos😉😉

[@TheWeatherbuff]

Excellent segment, as always! Thank you, Captain! :)

[@jamescaley9942]

There was also AA587 that crashed in New York in 2001. In response to turbulence the pilot used excessive rudder inputs with several rapid reversals. This was a positive feedback loop which ended in the vertical stabiliser separating as it the loads were beyond the design limit.

[@brunogasperin]

You are an inspiration for all of us who wants to become pilots! Thanks for another great video!

[@carlosl5361]

Very good videos. Good job Mentour Pilot. You explain everything with clarity and in a very clear English. And you reinforce very adequately your explanations with examples, photos or other videos that I guess are laborious to find and edit.

[@SKARTHIKSELVAN]

Thanks for your clear explanation.I wish you a very happy new year 2020.

[@frankzardini6224]

Fascinating podcast Mentour! I learned a lot. Thank you very much!

[@vincentiusnuringsaptadisur7061]

I really love how you explained technical things such as this. I am an aviation engineering student and understand more clearly from your video than my lecture :) could you also maybe make a video about Roll Subsidence and Spiral? I would definitely share this sort of educational video.

[@Zorroxyz123]

That would be very useful too.

[@GNX157]

MentourPilot, thanks for making this video. I had made a request for a video on this a while back and thought it would never get made. I understand it much more now.

[@jasonh8043]

Another excellent video. Interesting and Informative. THANK YOU

[@Mash4096]

Very clear explanation. Thanks.

[@Gohan-chan]

Japan Air 123 lost most of it's vertical stabilizer, and in addition to losing all of it's hydraulic systems, was experiencing severe Dutch roll due to missing the stabilizer. It's amazing that the pilots kept that plane in the air for 32 minutes after the tail came off. From looking at the FDR data, that plane was rolling as far as 80 degrees from horizontal roughly every 12 seconds because of it.

[@CristianKlein]

Finally got my wish fulfilled to have an episode about the yaw damper. Thanks @MentourPilot!

[@EleanorPeterson]

I loved this. Although I got my PPL (now lapsed) on a Cessna 172 AGES ago, I still do a lot of kite flying and aeromodelling. I started out with free-flight aircraft as a kid and gradually moved on to RC planes. Lots of homemade designs, lots of experiments, lots of mistakes. Without necessarily understanding the scientific aspects of aerodynamics very deeply, old-school aeromodellers used to get a pretty good grounding in the basics of flight dynamics and stability without really knowing it. Many of today's expert RC modellers are terrific pilots, but they miss out on a lot of fun by only buying ready-to-fly planes, pre-trimmed, tried and tested. But playing about with your own designs and drawing up 'what-if?' plans is fascinating and fun. Dutch rolling was most noticeable on gliders (of around 10' wingspan) when free-flight designs were converted to radio-control. Early RC gear was very simple, offering just one channel: rudder only. To avoid constant crashes (no elevator, so pitch was non-negotiable!) the planes had to be self-stabilising, and the wings had lots of dihedral or even polyhedral. Touching the rudder gave a turn, plus a lot of swooping and wallowing; there was all sorts of fun playing about with dihedral, wing sweep, tail moment and vertical stabiliser area to reduce it. The problem disappeared when radio gear allowed full control (elevator and aileron, with less extreme dihedral). Happy days... :-)

[@dehoedisc7247]

I once duplicated the principle of "Dutch" roll in an automotive context, when I was towing a Pontiac Tempest with a much lighter IH Scout with 4 cylinder engine. At about 45mph the front suspension went into a slight drift to right, then cycled back to do a drift to the left. Basically a resonant "S" back and forth. I guessed that if I put steering inputs that might cancel out the mechanically worn out and out of adjustment front end components. It worked. The tow rig was now running as straight as an arrow while the tires were doing one heck of a sort of sidewinder dance back and forth. Good thing it was a short haul, not really safe.

[@aerocap]

I liked.. The explanations Your voice The adorable dogs Your expression on the thumbnail 😅

[@jessijacobs8]

Incredible explanation 👏 👌 You put it across in such a simple easy way to understand. Thank you Petter!! 😊

[@davew5383]

This is very interesting, I have never heard of a Dutch Roll before. I have heard about airplanes having a Yaw Damper but I have had no idea how it worked until this video. I really like how you explain it with lots of details, like having the video showing what a Dutch Roll looks like. It was very interesting to find out that the 707 had a Yaw Damper, I would think that it would be something more recently on airplanes with all the computer controls they seem to have these days. It sounds like a Yaw Damper on an airplane is kind of like cars now having stability control on them. Thank You Very Much, for making this video, I enjoyed it very much👍🙂

[@brown-eyedman4040]

I know what a Dutch Crunch roll is. Apparently this is completely different.

[@davew5383]

@@brown-eyedman4040 Apparently🤔

[@carlosdaroza]

Would not a yaw to the right mean that the direction of the airflow relative to the nose-tail axis be to the left, i.e. skidding with the left wing forward?

[@davidbristow69]

A yaw damper can be implemented with an analog control circuit. For the last several decades it's been easier to implement it in code in one of the avionics computers.

[@poorboybmx2511]

Another great video, thank you very much, superbly explained and excellent graphics to accompany 👍

[@tariq8890]

Thank you for flying with KLM. For some appetisers, we'll be served Dutch Rolls

[@AlielJorax]

This was the best video on the topic I found and you deserve my sub for this.

[@TgSnowwy]

Yaw Damper: "I sense a disturbance in the Force... on the plane."

[@MentourPilot]

😂😂

[@chrisschack9716]

It's more a disturbance in the forces, isn't it?

[@pyrokinethic]

Master Yaw-da

[@kevinshen9391]

@@pyrokinethic Haha!

[@marcopohl4875]

gives a whole new meaning too skywalker

[@Gu1tarJohn]

Had never heard of this before. My first thought was some kind of aerodynamic feedback loop, but there's way more to it. Very cool. This channel rocks.

[@FelipeFadini]

I like Mentour Pilot channel for two simple reasons: I can practice my English and I always learn something new, from a different point of view. Keep up the good fight and the good work!

[@mcm933]

Thank you @Mentor Pilot, I just got my CPL last week and just I wanted to say thank you. ❤️

[@atwest]

Mentour Pilot dog anticipates roll to the left... smart dog!

[@selcukbirler6577]

The nicest dogs I’ve ever seen, what a lovely dogs...

[@brunopessanha]

awesome explanation!!!! learnt so much! thanks!

[@Paulwhittall37]

Great video. Just trying to grasp this in my PPL studies and found this 👌. Great content as usual 😎

[@fredharris4342]

Sheesh.... Petter - you are BRILLIANT! SO fascinating and educational - and EXPERTLY taught/explained. You're SUCH A BAD ASS!

[@paulmurphy42]

Brilliant! Please do a video on how pilots at airports find the exact parking position, by using the lights on the stands, etc.

[@elyas-tavakkoli]

This pilot 👨‍✈️ is very Friendly and I do like His videos , I have learned many things from this channel ! PLEASE KEEP IT UP 👍🏻

[@MONRFin]

Very good explanation, thank you very much!

[@Phaidrus]

Excellent video, thanks!

[@Lloyd2605]

Your best video yet. Please can we have more technical videos like this. Thank you.

[@airfoxtrot2006]

Fantastic video Mentour very interesting i enjoyed watching it.

[@DrPankajMalukar]

Thanks Mentour! Nice simplistic way of explaining Dutch roll. I believe on landing-on final, in a small aircraft where yaw dumper not available, if one tries to control Dutch roll can be worst & fatal. Enjoyed the video.

[@jeffhoser7717]

If memory of several decades and many cabin hours serves some variants of early swept wing transports were particularly prone to this phenomona . The " stretched " DC-8 come first to mind but I've experienced 'Dutch Roll ' in Boeings as well. First hand I can attest it makes for an uncomfortable and tiring flight when your ' level bubbles ' are in a constant state of agitation ! A very good video and excellent explanation of the phenomona . Personal thanks from an old ' beast ' for an excellent channel ! FWIW, I've long held experiencing dutch roll in calm conditions back in the day may have resulted from some minor aircraft mis-rigging issues autopilot sensitivity conflicts . In today's digital world I would expect better .

[@abhishekghatge1704]

I mostly know the answer to these questions but i still end up learning something new every time. Great video!

[@canopyjunkie]

This applies to and explains things that happen to high performance parachutes, thanks for the thorough explanation, and now I have a name for it instead of "death wobbles"

[@henancasey6216]

Amazing instructor Thanks

[@artswri]

Who knew there was that much to learn about Dutch roll?! Thanks!!

[@brianw612]

My flight instructor was demonstrating dutch rolls during one of my first lessons, got carried away while I was feeling sick.

[@SooperToober]

Thx for a great explanation

[@tedjensen8841]

Learned something new. Thank you so much.

[@greggyd321]

That was an awesome explanation of the DR! Now I just need to be able to cover my eyes with my ears :)

[@trainout2grass1]

Thanks very much, learnt a lot again.

[@faisaljumean7411]

Well explained

[@lizardfirefighter110]

The pop up above the dog, “Why doesn’t he go into another room, I am trying to take a nap!”

[@rzarks]

lizardfirefighter110 I'm just glad it's one thing they didn't named black for whatever reason. Stay fly.

[@VulcanOnWheels]

Whenever you refer to a moment in a KZbin video, it's a good idea to include the time index. I usually do that at the start of the comment.

[@Hondalover3000]

Another interesting video Mentour.

[@Doc62J]

My son experienced this on a large air force plane last summer. Scariest moment of his life, he thought his time was up. Kudos to the flight crew for recovering and making a safe landing.

[@evilchaosboy]

Just watched a video where the "Dutch Roll" was a problem and I KNEW what they were talking about! I never forgot "The skaters"! Thanks, Mentour! \m/

[@NazarDmytrovskiy]

I had tough time during ATPL with a Dutch roll. In case I will see you on my airline interview don’t be surprised if I use your words. P.S. Super easy explanation

[@dr_j0nes]

Now I finally understand it. Thank you! :)

[@ChrisCupples]

Puppers are too cute 😍, and great vid 👍👍

[@awanzadahamid7397]

Great ....explained very well🥰🥰🥰

[@almorkans3171]

I really enjoy these more technical videos. I would love to more videos on upset recovery procedures.

[@t0cableguy]

I enjoy watching your videos about the way planes work and how to fly them even though I'll probably never be a pilot, because they put my mind at rest for being a passenger in a plane.

[@clintonandrews1538]

Dear Mentour: at 5:00 are you sure about the graphic? If the aircraft rolls right and yaws right, won't the air flow be coming from the left (the former straight forward path of the aircraft?) I enjoy your videos, including the non-verbal commentary of your co-pilot (the furry one.) All the best!

[@TheWindigomonster]

You're helping me study for my theory of flight class!

[@dutchdudegrow8229]

Thanks ! i learn a lot of new things :D

[@harrisonhine243]

Hi Mentour - I have enjoyed your KZbin Videos and want to make a comment about what happens later in life for an airline employee. My wife was a flight attendant for United Airlines for 34 years and retired in 2003. (Obviously we are now in our early 70's) She retired with both flight benefits for life as well as Health Insurance for both of us. We have enjoyed both and thankfully United is still in business. I know the listing status of SA travel varies by airline but at United boarding priority is by seniority. That fact has been a boon to us since her 34 years usually puts us at the top of the standby list. However, after so many years we know never to count on getting on a particular flight. The nice thing about the system United uses now is that we have access the the actual load factor for each flight as well as the other employees/retirees that have listed for the flight and their seniority. It makes the process easier but it is never full proof. Also there are many times when we have been delayed for days (5 days in Honolulu, 3 days in Rome) waiting to get to our destination. We have also made very unusual routes to get from point A to point B because that is where the seats were available. I think many new airline employees and their families have an unreasonable expectation of what pass flying is like and they need to know that you have to be flexible and go with the flow always allowing extra time to get to and from your destination and back home again. The most upsetting thing we have seen is for un-accompanied companion passengers who are new to pass ride flying being upset because they don't get on a particular flight. I think you should do a segment on the joys and tears of Pass travel. Cheers from Florida!

[@Nobilangelo]

Fascinating. Thank you.

[@MGTOW-nn9ls]

Hello Mentor Pilot. I love your videos and would like to ask the following question : How turn coordination on B737NG is done when autopilot is engaged. B737NG is two axis autopilot and deflection of the rudder is not controlled buy the FCC

[@aryamans9459]

A similar thing happens while riding a motorcycle where the handlebar starts wiggling rapidly from side to side. We call this a "Tankslapper". And we use something known as a steering damper to counter this motion.

[@ishikasharma861]

V nicely explained

[@Andy.Moores]

Hey Petter, currently completing ATPL and this was very interesting. Would be great if you can start to subtlety cover these ATPL topics from time to time. Great work & Thank you!

[@SF-li9kh]

Beginning of the video: I already know all these End of the video: Woah, didn't know much. Learned a lot

[@mog882]

S F You are a good listener and a speedy learner, I am personally very proud of you. VERY proud.

[@SF-li9kh]

@@mog882 Welcome to Jumanji

[@Maik_Budweg]

Many thanks for this explanation. Now I can explain it to my friends in Netherlands :)

[@vseve9397]

wow this is the best video in a while

[@HotelPapa100]

The translational movement due to the tilted wings is not a yaw, that's a side slip. Yawing (rotation about the vertical axis) comes as a reaction.

[@HotelPapa100]

@@acbulgin2 But he called the movement yaw. Which it isn't.

[@villiamo3861]

Absolutely. I love his videos, but this is a fundamental problem with this one - the sideslip is the very thing increasing the lift of the downwing compared to the upperwing. Any yaw in that direction amounts to near- coordination of the turn and even-ing the flow over the wings.(That yaw does happen with the consequential effects on the rudder etc, but it is hardly the thing increasing lift in the lower wing relative to the upper). I genuinely think it must have been Petter not concentrating with the use of the word 'yaw' - but it's a bit of a flaw!

[@JohnRodriguesPhotographer]

Learned about this reading about F100 and later I think the F4. Before the internet. Your explanation is more detailed and understandable.

[@tedavco]

Thank you. Very well explained, noticed your video clip featured that famous tu154 incident so was that a mechanical problem causing an extreme Dutch roll

[@jorgeparra196]

Great video, keep up this video series pls

[@MentourPilot]

What would you like to see next?

[@jorgeparra196]

Maybe shock waves, or mach buffet

[@yasirmohammedali]

Hi captain, thanks for the video

[@n6mz]

7:45 nice 777 animation. I'm sure my friend John Cashman (777 Project Pilot) got to disable the yaw damper and test the dutch roll tendencies of that beautiful a/c. Keep up the great work.

[@dianneb2224]

I’ve heard of a Dutch Roll but never knew what it was. Now I do. And knowing why it’s called that helps to understand it. I learned something today.

[@turbofanlover]

Great vid.

[@KronosIV]

This aerodynamics topic is extremely interesting (to me at least) and you explain it very, very well. Thank you, Mentour! Interestingly, my former flight instructor told me the origin of the term 'dutch roll' was a meat-filled spiral pastry from Holland, a shape similar to the directional line traced by the nose of the aircraft as it moved during the described motion. I wonder if any other American students have been told that?

[@CheeseAlarm]

Really interesting. One of your best (from my point of view anyway)

[@lgscorp2008]

Super video!

[@TheLusus]

Nice to see that yoy choose the SAAB Gripen when you cliped in the fighter jet example!