Why is the RUDDER SPLIT? Explained by CAPTAIN JOE

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Captain Joe

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Dear friends and followers, welcome back to my channel and to a great video about the split rudder you see on most wide-body aeroplanes.
The primary flight controls such as the ailerons, elevator and rudder are hydraulically powered. In case of the Boeing 747 which has four independent hydraulic systems, 1, 2,3 and 4 are each powered and pressurized by its respective engine. Now if we look at this schematic, you see that tail fin rudder or vertical stabilizer is split into the upper and lower rudder. The upper rudder is deflected to either side by three actuators, two of them powered by hydraulic system number three and one by system number one. The lower rudder comes with two actuators one powered by system number two and the other by system number four.
As you apply force into the rudder pedals to either side, both the upper and lower rudder will be deflected simultaneously towards the given input.
The slower you fly the more deflection you need of the rudder to have an effect and the faster you fly, the less deflection you need.
So for example, as she comes in for landing, if the pilot applies full left or right rudder, it will go to the maximum deflection of 31.5 degrees, which sometimes can be necessary in strong crosswind conditions. During cruise or speeds higher than 350 knots, with the same amount of input into the pedals, the rudder will only deflect 5 degrees and less to either side.
But as an airline pilot, you always expect the same reply of your plane, no matter the speed. Therefore, airplane engineers have fitted the flight control system with a so-called rudder ratio changer. The general purpose of the rudder ratio changer is to gradually reduce the surface deflection of the rudder by the pedals with increasing airspeed. Please do not mistake this with the yaw damper, that´s a whole other system.
But see more in the video!
Thank you very much for your time! I hope you enjoy this video!
Wishing you all the best!
Your "Captain" Joe
Big thank you to all other youtubers who provided me with the video material to create this video. Your content is highly appreciated. Please follow their channels:
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OneHairyGuy پیش 5 روز
Hey, Captain Joe 👨‍✈️, I know that I am 2 years late for this, but I have rudder related question. November 12, 2001 an Airbus A300 lost its rudder shortly after takeoff. It was determined that the pilot 👨‍✈️ of American Airlines flight 587 was experiencing wake turbulence and was using excessive rudder to overcome said turbulence. Unfortunately there were no survivors. Has this problem ever manifested itself on a Boeing aircraft ?? Is this rudder issue only related to Airbus 300 Series aircraft ?? Hey, if you respond I will appreciate this. TY.
Sa Ce
Sa Ce پیش 5 روز
I think las carretas de El Salvador llevan rodos y chancletas de frenos .
January Success
January Success پیش 7 روز
The distinct need atypically manage because printer muhly spray regarding a young fragrance. untidy, sweet beach
Sahel N
Sahel N پیش 11 روز
Beard looks good Joe
Cornucopia Videography
Cornucopia Videography پیش 16 روز
At around 3:34 you say that rudder is rarely used during cruise. What about coordinated turns?
Schkhermer پیش 25 روز
Theslowmoguy Slow mo Music😂
ASHWATH پیش 27 روز
Pls can u pin my comment
Moja Moja
Moja Moja پیش ماه
I'll take a dozen of the Airbus tee. How many colors are offered?
Zia Uddin
Zia Uddin پیش ماه
Fantastic aircraft movements through vertical axis , lateral axis & longitudinal axis through Ailerons , Elevator & Rudder #
When I saw the thumb nail I thought he was going to discuss why Korean flag has split circle...... LOL
Avinash Kumar
Avinash Kumar پیش ماه
Hey Captain! Thank you for another great video! Do you have a video on the yaw damper function?
Sayed Abubkr
Sayed Abubkr پیش ماه
Answering your question in 4:07 I think the lower rudder is almost frozen to the left because the pilot probably used it in maneuvering when entering to the gate but the upper is free moving with the real wind direction as it might be set on that during flight mode to maintain flying in straight line. 😂😂 Please tell me did I got the right understanding or not because I enjoy you videos for both loving aviation and improving my English 😅😅
duke of hood
duke of hood پیش 2 ماه
There for extra brakes
Juho Aronen
Juho Aronen پیش 2 ماه
Love the video. Same music as The Slow Mo Guys 😂
Maverick Zawislak
Maverick Zawislak پیش 2 ماه
Split rudders can likely be angled in the opposite directions to increase drag while braking, leading to less nose turning than if they were angled the same way. In the emergency example with the rudder failure you said the pilot lost altitude. Probably due because of increased drag from the opposite rudder orientation.
Aruchamy Nachimuthu
Aruchamy Nachimuthu پیش 3 ماه
Good air massage brother
Candlestick Wick
Candlestick Wick پیش 3 ماه
Perhaps the different direction of the rudders will cancel the roll induced by the high rudder position.
akhnakhn پیش 3 ماه
Rudder ratio changer works just like rudder limitter in earlier version of transport aircraft. that is to reduce the aerodynamic load on the control surface when flying at higher speed to avoid damage to rudder control surface based on the pilot higher control input
Giant Robot
Giant Robot پیش 4 ماه
Watched a tonne of pilots on youtube; commercial ones that are still flying are my favourite and this guy is by far the best. I find myself always coming back to Captain Joe's content. Initially found his channel because of autoplay going off course from ATC videos and then his interview with Kennedy Steve and I was hooked from there. Thank you so much, Captain, for your hard work and great videos.
Fresh 5hundred
Fresh 5hundred پیش 4 ماه
Arish Roy
Arish Roy پیش 5 ماه
Still waiting for Yaw Damper video by Captain
Noah Stabler
Noah Stabler پیش 5 ماه
This guy loves his Cargolux planes
Officer_Major پیش 6 ماه
3:48 That camera angle scared me. Made it look like the plane just took a nosedive right over the fence.
PΔNDΔ پیش 6 ماه
I was the like number 16000
swaraj miraje
swaraj miraje پیش 6 ماه
joe what about boeing planes ???
Luca Buckley
Luca Buckley پیش 7 ماه
Science and aviation combined! My favorite things!!!
Skul پیش 7 ماه
Do you make more money on youtube or a pilot
Patrick frederick Andres
Patrick frederick Andres پیش 7 ماه
Watching with my daughter captain
Nicole Millner
Nicole Millner پیش 7 ماه
5:07 you shouldn’t have a split rudder because if hydraulics 1 3 and 4 were to fail you would have complete control of the ENTIRE rudder due to the non split rudder and therefore in my scenario you only need one system working to power it
TechBuddies پیش 7 ماه
The splitting of rudder of a380 might be a tail wind. So if the top rudder slightly turns one side and bottom ones to other side, therefore it splits
Lilian Napoleon
Lilian Napoleon پیش 7 ماه
I watch captain Joe everyday for the past week and I'm happy with my disition he is such a great teacher and captain I hope to see him one day
sonal patel
sonal patel پیش 8 ماه
What you Do Not Have Money More Money Money and a Balance life
O پیش 8 ماه
Beard less Joe :- Lv1 crook gay Joe with Beard :- lv99 God with 42069 days of NoFap
Umar Abdulhamid
Umar Abdulhamid پیش 8 ماه
Capt. Joe to be hones you look more beautiful than with your little bear 😂😅
RubbenTheBOSS پیش 8 ماه
It's called stabalizing,Joe 4:15
Gourab Kar
Gourab Kar پیش 8 ماه
For B737, invite Mentor Pilot. Hope he is doing absolutely fantastic
Roshan aby
Roshan aby پیش 8 ماه
The audios of your videos isn't high at all
Thomas Read
Thomas Read پیش 8 ماه
Because the chain saw operator slipped.
Will Ludlow
Will Ludlow پیش 8 ماه
Man Airbus is really smart sometimes
Aviation Yeoj 777
Aviation Yeoj 777 پیش 8 ماه
Oh my, look at Captain Joe, he already has a beard!!!!
akronymus پیش 8 ماه
Extending to 10 minutes what can be fully explained in 1 minute is an art of itself, as well.
bonehead پیش 8 ماه
@Captain Joe A380 rudders is a trick question......they are going opposite sides in ground maintenance. Could be testing the actuators. That never happens in flight. It works like normal rudders. It makes no sense to do that in flight. Why would one deflect a control surface part the opposite way , reducing the full control surfaces effectiveness and also increasing structural load.
Greg Krezos
Greg Krezos پیش 9 ماه
Split rudder used for braking and balance: www.researchgate.net/publication/333361674_Balancing_an_aircraft_with_symmetrically_deflected_split_elevator_and_rudder_during_short_landing_run
Andy Dai
Andy Dai پیش 9 ماه
Does anyone else see that ring thingie at 3:22?
Danthexplorer Verendia
Danthexplorer Verendia پیش 9 ماه
Northwest airline flight 85 rudder
Mandla Nyathi
Mandla Nyathi پیش 9 ماه
Can i have you number joe
Frederick Malouf
Frederick Malouf پیش 9 ماه
Therlighchannel is great to explain some issues with flights. Sad, but educational.
stein1385 پیش 9 ماه
Whats the diff butween a rudda and a rudder?
Ravindra Kopalle
Ravindra Kopalle پیش 9 ماه
I am a AIR BUS Lover
Hồ Ngọc Diệp
Hồ Ngọc Diệp پیش 9 ماه
you have beard
Hongmei Shi
Hongmei Shi پیش 9 ماه
Shuijie Shen
Shuijie Shen پیش 9 ماه
looks like no one knows the answer to the 2nd question
honeytgb پیش 9 ماه
10:01 - The IRpost algorithm Gods rules the roost! LOL!
Duke Ashvin
Duke Ashvin پیش 9 ماه
Airbus A 380 - Spilt on 2 Sides Show the fastested Slowdown or Air Brakes 😁
Big Fish
Big Fish پیش 9 ماه
Just a guess about split rudder opposing deflections by upper and lower segments. Perhaps the system "at rest" becomes isolated from the pump source and therefore the larger upper might be driving smaller lower with back pressue on the one shared hydraulic line? Of course when energised this action would be impossible. Just a guess. Thanks
Avid Watcher
Avid Watcher پیش 9 ماه
The A380 split rudder can have the two parts moving in opposite directions to create drag, and work just like spoilers, to slow down the aircraft.
jfsa380 پیش 9 ماه
Can the hydraulic actuators argue with each other? If actuator 1 requests a left, but actuator 3 is reversed and requests a right, it would not move, correct? As you said with Northwest, the one actuator failed, wouldn’t the other actuator still be responding properly?
Jordan nguyen
Jordan nguyen پیش 9 ماه
What why dose he have facial hair
Avshalom Sadoun
Avshalom Sadoun پیش 9 ماه
The space shuttle had a split rudder too! Although its only for slowing purposes as in air brake spoilers...
Anthony A
Anthony A پیش 9 ماه
Hi all, what’s the sing title we can ear around 6min, calm music ?
TheLazy0ne پیش 9 ماه
Airbuses are "shes" Boeings are "planes".... Its! man they are all Its!
Ethan's Aviation
Ethan's Aviation پیش 7 ماه
No airbuses are just plane(except the a380) and boeing aircraft are she's
Michal Simanek
Michal Simanek پیش 9 ماه
4:10 probably for aerodynamic breaking? like the space shuttle? but i have no idea tbh
Peter Smythe
Peter Smythe پیش 9 ماه
Well, if split ailerons are for drag rudder control, split rudder must be for drag elevator control, right?
Gill Gill
Gill Gill پیش 10 ماه
How rudder rolls the plane?
Ethan's Aviation
Ethan's Aviation پیش 7 ماه
It doesn't roll it yaws. Roll is controled by the ailerons
Gamer King
Gamer King پیش 10 ماه
Why are the ailerons on the a 380 built in sections ?
Paul Kim
Paul Kim پیش 10 ماه
Korean air
풋카상 پیش 10 ماه
Captain, how old are you now? Did you marry?
HC Aviation
HC Aviation پیش 10 ماه
Like the new look Joe. Keep up the good videos
Pamesh Kumar
Pamesh Kumar پیش 10 ماه
This system came after a air crash when a pilot use extreme ruder controls 4-5 times in cross wind or in strong to control the plane but because of it, its ruder just snap off the plane and the plane crashed The plane was American airlines 587
Hanzo1990 پیش 11 ماه
Am I the only one who wants to see a fistfight between Captain Joe and Mentour Pilot?
ccityplanner12 :
ccityplanner12 : پیش 11 ماه
Thumbnail makes it look like: why is there a wavy white split in the middle of the Koreanair logo?
toddbod94 پیش 7 ماه
Sponsored by Pepsi
I love pilot career
I love pilot career پیش 11 ماه
Hiero Onymos
Hiero Onymos پیش 11 ماه
I'm watching right today April 4, 2020, the exact date of this video date uploaded (April 4, 2019).
RICHARD BRICE پیش 11 ماه
Koustabh sen
Koustabh sen پیش 11 ماه
why rudder moves with spoiler
Patrick Williams
Patrick Williams پیش 11 ماه
You never did say which plane you think has the bed looking split rudder... My guess is that you would say the 747... But you'd be wrong! It's the 727! Lol. As a mechanic, I love the videos keep 'em coming!
Eudald Guell
Eudald Guell پیش سال
It.s a security system
Pavel Zomarev
Pavel Zomarev پیش سال
why voice in pilot's radio cannot be as good as our cellphones?
Ekl Haft
Ekl Haft پیش سال
Why is Pepsian Air logo split?
Amir Cheraghee
Amir Cheraghee پیش سال
سلام هر چه وابستگی سیستم فرمان دادن به سکان و سایر عوامل هدایت پرواز،توسط مدارات الکترونیکی بیشتر پیشرفت کند،احتمال عدم کنترل خلبان بر روی هواپیما بالا تر میرود و امکان تسلط دستهای پشت پرده برای جنایاتی مثل حادثه ساختمان تجارت جهانی بالا تر میرود و این در حالیست که قبل از دخالت مدارات فرمان الکترونیکی،ترکیب سیستم مکانیکی و هیدرولیک هیچ گونه خطایی در آن وجود نداشته و هزینه تعمیرات و نگهداری ناوگان هوایی به مراتب ارزان تر و غیر تخصصی تر از امروز بوده است. تنها راه بالا بردن امنیت پرواز برای خلبان و مسافران بی گناه،بالا بردن نرخ دیه آدمیزاد است.
holobolo پیش سال
next video - why does captain joe have the most annoying accent and way of talking even though he makes great videos
Versatile AJ
Versatile AJ پیش سال
Captain please why is it so that the rudder of the Airbus A380 tilt to the right (upper),and to the left (lower) Also I wanna get one of your T-shirt of the Airbus because am a lover of Airbus
wrestlemaniac202 پیش سال
Why do small aircraft have single rudders not split rudders?
Nat McVeigh
Nat McVeigh پیش سال
Slo Mo guys slo mo music at 1:00?
Severin Yao
Severin Yao پیش سال
Most airline captains that I've seen always had four stripes on their uniforms. Why are you wearing three stripes as a captain?
Severin Yao
Severin Yao پیش سال
That incident in 2002 with the 747's lower rudder splitting to the left must have been critical and a hell of a ride.
Luka B.
Luka B. پیش سال
4:20 to reduce rolling of plane?
Lucas Celeste
Lucas Celeste پیش سال
I think the reason with the Airbus rudders going opposite directions could be because when the wind pushes it one way, they have to correct it with the other one in order to not turn at the gate. I'm no pilot, just an idea :)
Brian Emery
Brian Emery پیش سال
Wish you would have discussed this. But is the nose gear plumbed up the same as the rudders? Does it have 4 separate actuators in case of hydraulic failure to any system
Ian dominic Gutierrez
Ian dominic Gutierrez پیش سال
Did anyone notice the bear on the face of Joe
Tayeb Al Mahdi
Tayeb Al Mahdi پیش سال
Nice beard
Gary Algier
Gary Algier پیش سال
Sitting in the back of a Qantas 747 from Australia I couldn't sleep and I couldn't believe the swag back and forth of that tail and the corrective action of the rudder I asked to be moved farther forward is this normal it felt as if the rudder was continually adjusting left and right left and right terribly uncomfortable back there in the last few rows of seats
safe at third
safe at third پیش سال
great knowledge
Neil Vance
Neil Vance پیش سال
Airline Pilots selling T-shirts? Hell why not :) excellent video as always thank you
Quinten Cooper
Quinten Cooper پیش سال
The only thing i can think of as a mechanic as to why the 2 rudders travel in oposite directions is for drag similar to flaps on landing because you are causing the air to go in different directions preventing lift in either direction. Another method could be for better roll. Or it could also be to reduce stress on the entire virtical stabilizer
Airsoft maestro
Airsoft maestro پیش سال
I know everything about a plane now because of this guy
Tony پیش سال
Pepsi plane? Oh wait nah just the Koreans.
kevin stonerock
kevin stonerock پیش سال
I don’t know for sure but a theory is that it would act as a rudder canceling feature so you don’t exceed the design limits of the aircraft depending on speed. Another benefit is it could act as a speed brake until airspeed is under design limits. The rudder section acting opposite to intended direction of travel would slowly return to neutral or possibly move to the same side. The yaw rate would also destabilize control if it was suddenly moved to maximum deflection so it again would slow the rate of turn. Well that’s my theory and I’m sticking to it unless I hear a better explanation. Happy flying to you!
Matthew Suffidy
Matthew Suffidy پیش سال
I would have thought may be something like redundancy. I guess it may cause a sort of rolling as well as the two have slightly different lever points on the mass. May help the rear stay on the ground better for the wheels.
Solowarrior1221 پیش سال
Hmm, why the a380 lower rudder moves to the left and the upper rudder goes to the right when parked on the ground is something i'd guess only an airbus engineer would know.
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