What is a "Dutch Roll"?! 

Your dog should be a pretty good pilot by now.

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

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!

This guy made me an aviation enthusiast❤

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

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 ...

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.

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...

Brilliant presentation. Clear, concise, and really interesting.

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

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.

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.

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

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!

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.

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

This episode was brilliant :D more about aerodynamics please!

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😉😉

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

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

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👍🙂

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

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.

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

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.

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.

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

Another excellent video. Interesting and Informative. THANK YOU

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

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

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

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.

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

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.

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

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

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... :-)

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.

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

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

Amazing instructor Thanks

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

Very clear explanation. Thanks.

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

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.

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

Thx for a great explanation

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

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

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

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

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.

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

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!

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.

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

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.

400 views in the first 5 minutes This channel is very successful!

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"

Very good explanation, thank you very much!

Learned something new. Thank you so much.

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

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

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

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

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

Thanks very much, learnt a lot again.

Fascinating. Thank you.

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!

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

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

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 .

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

Well explained

Excellent video, thanks!

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

Now I finally understand it. Thank you! :)

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!

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.

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.

Fantastic video Mentour very interesting i enjoyed watching it.

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

Yes I had I flight over the Rockies that had a lot of that motion. I think we slowed down a little to reduce it.

Hi captain, thanks for the video

Excellent explanation of Dutch Roll. The NASA experiments into lifting bodies had this. The Space Shuttle used computer stability to help stop it. In my heart I believe there is a way with aerodynamics to minimize it in these lifting bodies.

Hi Mentour - I have enjoyed your RU-vid 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!

Thanks ! i learn a lot of new things :D

You did it so good! Could you please do a Spiral Instability plz?

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/

So we study this phenomenon in aerospace engineering. Our professor told us that the name came from the fact that the Dutch were, back in the day, sailors who spent very long times at sea, inherently getting used to the movement of the boat caused by the waves. Once they got to port and stepped on steady ground, they were known for struggling with the balance and walking in this characteristic manner weiving from left to right. Since the movement of an aircraft was somewhat similar, the name was attributed to this stability mode. This explanation is rather anecdotal and I have no idea if it is even true. Anyway I just wanted to share this with all of you. As usual, awesome video and awesome explanations. Keep it up!

Great ....explained very well🥰🥰🥰

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

When the yaw-damper counteracts the yaw, what have you to do when landing in crosswind conditions? Would you turn it off? Or can you override it with your pedals? Your channel is great - many thanks for your effort!

I remember on a plane me and the other kids/teenagers got to get it he cockpit at cruise. Then the copilot showed us how the yoke works by slightly taking it to right, and quickly back. That was super cool.

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?

My experience with a Dutch Roll came from my tail dragger coach making me practice endlessly. Roll the wings back and forth and use the rudder to keep the nose in the same place on the horizon. Makes for improved rudder skills for sure.

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

V nicely explained

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

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