What´s a RAT? RAM AIR TURBINE! Explained by "CAPTAIN" Joe

[@krisztiankormos2506]

I was at Brooklands museum where a restored Concorde is on display with the RAT extended. When the tour guide asked if anyone knew what it was for, a little girl said that it was an outboard motor so if they had to ditch the aircraft in water, they could get to shore. Just a funny story I thought I'd share.

[@Damien.D]

Let's try that in the Hudson.

[@bikerboy3k]

That's not bad at all!

[@TheXcalculusx]

May be we shall have something like that in the future, who knows

[@j-c4997]

Krisztian Kormos great idea she could be an aerospace engineer

[@certifiedbruh2180]

james ndung'u Then we'd need flying boats again

[@thetruthisoutthereofficial]

The rat is a small animal inside the belly of the aircraft and incase of double engine failure it will start running inside its hamster wheel and turn the engines with the hamster wheel so that the aircraft has engine power to land safely

[@supa3ek]

The Truth Is Out There actually thats kinda what happens only the rat is just wind turning the cage that generates electric power : ) same principle!

[@NipapornP]

And China Airlines use little children for that, right?

[@heavyinfantry1692]

*starts to band him* well i guess the secret is out

[@nancylee1762]

The Truth Is Out There Great explanation , thank you!

[@woodencart3662]

and it is china eastern airline......

[@hunchojack1858]

I Love That He Is Always Smileing :) It Makes Me Smile

[@flywithcaptainjoe]

Stay positive!

[@emercycrite]

It helps that he’s got a very handsome smile too!

[@binduanand6253]

Not negative

[@stefan4321]

Not Corona positive 🙄😅

[@mickeysmiths]

​@@flywithcaptainjoe ​​ When MH370 was gliding to the surface of the ocean with the captain controlling it in the cockpit, & only RAT power available (but batteries too), at which point (e.g. 10,000ft) would he have tried to set the wings' flight surfaces (via the centre electrical system) to slow the plane as best he could for the ditching? Would the available flight surfaces take longer to set, due to being on the secondary power grid? I think he was aware of the slowness of the secondary power grid as he would have simmed it, so he was prepared for the delay to set those surfaces. What do you think? Thanks in advance. Mickey 👍

[@Nortonmascota]

3:47 "RATMAN ON". Is it a superhero?

[@mrc14_2]

LOL

[@47Str8]

Da da da da da da da da da da da da da da da da -- RAT MAN!

[@netsky3]

It is in Italy. Very funny comics.

[@kingghidorah8106]

@@netsky3 il uomo topo

[@netsky3]

@@kingghidorah8106 yes, kinda of :D

[@winni223]

Thank you! Yes, the famous Gimli Glider was the case when the RAT helped to remain control over the plane.

[@flywithcaptainjoe]

Correct, as mentioned in the official incidents at the end of the video!

[@muhammadabdulwahabkhan2808]

winni223 i loved that one....how the pilot landed that ...omg

[@fast_wifi6905]

I have a question for you captain, do pilots listen to music while cruising?

[@ΑΡΗΣΚΟΡΝΑΡΑΚΗΣ]

Fast_Wifi yes, usually they prefer Psarantonis

[@Zzz-ui4mt]

was that the side slip landing?

[@sir-dil-a-lot]

brilliant video. Just want to say that your spoken English is marvellous. And possibly better than some of our own native speakers.

[@Rathtrainer]

If I'm not mistaken, learning English is a requirement for being a commercial pilot. Someone correct me if I'm wrong.

[@austro-hungarianempire3891]

I don't think it is a requirement for Airchina pilots, since some don't even know the difference between MikeAlpha and November

[@TheDr.01]

Sir Adil-a-lot hahahahaahaha

[@minxythemerciless]

Some of the vowels indicate he learned from a regional British speaker. Or possibly second-hand from same. The way he clips some of his words is very British English.

[@flywithcaptainjoe]

Thank you very much, means a lot to me :)

[@thephantom1492]

One of the most notable use of the RAM is the gimli glider. remember that one that ran out of fuel due to a misconversion between imperial and metric? Yes, that one. No fuel, no engines, no APU, no control.

[@jospi2]

The same with the Azores glider.

[@Rathtrainer]

That's the most primitive mistake you can make: "Oops! We ran out of fuel!"

[@Keithguinn97]

thephantom1492 yea. Basically crap has really hit the fan when you need to use it hehe

[@TheDr.01]

thephantom1492 hahahaaha😂😂😂

[@flywithcaptainjoe]

True, I´ve mentioned it in the official incidents at the end of the video!

[@briansmobile1]

Love your videos Captian Joe. I love knowing what's going on in the planes I fly in.

[@mukreminincedag5461]

Bb vpv vv00ü00ü000üüği bbbbv0

[@JONESSTI01]

this "rat" system was a key component of the safe emergency landing from FL360 (36,000ft) after a fuel miscalculation on an air canada flight. resulting in both engines flaming out with literally only minutes of alert warnings from the fuel pump pressure indicators. (from warning to engine flame out). The boeing aircraft landed safely but the nose gear didn't lock correctly and collapsed but the plane came to a safe halt at gimli airfield in the USA. this aircraft was nicknamed the "GIMLI GLIDER" and flew many more years of service after undergoing small repairs :)

[@oseo943]

Gimli glider story :-P

[@donsample1002]

oseo943 And Gimli is in Canada

[@hannahapor4856]

Gimli Glider is one of my favorite story in terms of aviation accidents

[@Teverell]

@@hannahapor4856 Same!! (TACA110 is another one of my favourites; check it out if you're not familiar with it! Mayday episode 'Nowhere to Land'.)

[@j-c4997]

Thomas yeah Canada was switching from Gallons to Kilograms and they asked for the amount of fuel in gallons and ground gave them that amount in kilograms.

[@soumyadebdey5747]

Dear Captain Joe, I have two questions. (1) At 1:49, should it be minimum or maximum? (2) I understand RAT causes drag, but installing more than one RAT in larger a aircraft should be more helpful for flight control by providing more power and keeping more cockpit instruments alive. Also, one of them can act as a backup of the other. What is theopinion of an aeronautical engineer?

[@bikestailer7430]

Hey Jo, in the movie "Sully" sully turned on the APU. The movie didn't show the RAT.!

[@PilotUlli]

Seen that too!

[@tiborlaho5728]

Shame!

[@derJakseiLp]

I was looking for this coment.

[@GarrixPyroVibes]

true

[@mohammedalsharif1737]

Probably the RAT would would have been destroyed on impact on water...hence the APU

[@MTGeomancer]

I'm surprised you didn't mention the Gimli Glider incident in Canada. They ran out of fuel halfway through the flight (error in pounds vs kilograms when refueling plus failure of fuel guage) that resulted in the loss of both engines, plus no fuel for the APU, so total loss of electrical power. All they had was the RAT, but they managed to glide it down, land without a nose gear (gravity drop failed to lock), and no major injuries. The Miracle on the Hudson flight at least still had the APU, but much less time to react to the situation.

[@DominiqueTouel666]

" The RAT was found in the extended position when the airplane was recovered from the water. Both RAT blades were present, and no major deformation of the blades was observed. " From the official report of the NTSB about the Hudson river landing

[@Caleb_Guffey]

Dominique Touel really I found the rat making a nest in my boat.

But why didn't they use the APU?

[@danilolimadossantos1]

@ They used the APU, and they didn't deploy RAT, it was deployed automatically, before Apu kicked in

[@yukewang1832]

True, and only because the plane deployed it automatically. They determined it's not necessary cuz they had APU started

[@camicus-3249]

"A RAT is one of the things you rarely see on an air plane." I would hope so

[@dans.chicken1278]

I do to

[@bobgillis1137]

Like a hail mary.

[@dingle849]

I thought it was to slice the birds up.

[@mthompson965]

That's actually what it's for, but due to people getting butt hurt, they tell you that it's some lame generator.

[@dingle849]

I guess that's the "fresh" poultry they sell in business class.

[@Rhoddy82]

+PASSwordUSERname Lmao. That's really funny

[@LacoteCohen]

PASSwordUSERname lol

[@southvietnam4690]

dingle you ever see a seagull at 12,000 ft?

[@kennethrussel7009]

Thanks Captain for educating us on the RAT. Properly explained. Love your videos, both learning and fun at the same time.

[@shadow404atl]

My dad, 1Lt David B Waldrop III, had to eject from an F-105 (over Friendly territory) during the Vietnam War because of an engine turbine failure. The RAT deployed and gave him electrical and hydraulics after he shut down the engine. This gave him enough time to calmly and carefully prepare for the ejection and steer his plane into a safe trajectory for it to crash and maximize his chances for a safe ejection.

[@nishitraj.]

Wow

[@kasutkuhitam]

Thanks for the video Captain. The Gimli Glider incident involving Air Canada Flight 143, and later made into a movie "Falling From the Sky Flight 174", where RAT was deployed and one of the main reasons the plane could be landed without any power from the engines and hydraulics.

[@nidhin4173]

God only knows why I am watching this video at 2 am.

[@Rathtrainer]

2 PM here. Hello person on the other side of the planet. How are you?

[@robertdraxel7175]

You live in India, not by name, by a short logic I deduced...

[@robertdraxel7175]

Are you from California? Or maybe Vancouver Canada?

[@robertdraxel7175]

I give you my coordinate: 23 pm

[@clarencebitegeko7079]

Nidhin Varkey Varghese 1:18 am here 😊

[@oldmech619]

As a mechanic, I dropped the RAT while trying to real people the switch in the B767 cockpit. Should’ve pulled the c/b. Lucky no one was around to see it. I had to restow it b/f someone so it.

[@esztivizo]

Hi Joe, thank you so much for making these highly informational but still very understandable videos for all the aviation enthusiasts out there, such as me. My biggest career dream is to one day become an airline pilot and your videos are motivating me every day. My question is, what is the most common malfunction on an aiplane and what's the standard operational procedure during the event? I wish you all the best and keep up the good work!

[@MrRay105]

The ease at which you explain & teach Aircraft systems & control is just breathtaking! I have learnt a lot of about Aircraft just from your videos!! Amazing!!

[@TheFlightSimChannel]

Nice video again Joe! Great to see your channel doing so well!

[@flywithcaptainjoe]

Thank you very much :) Greetings Joe

[@e-larningbangla893]

@@flywithcaptainjoe b

[@ella_komiya]

Another great example of how a Rat worked very well is the Air Canada Gimli Glider case. Such an amazing feat of landing from those pilots.

[@jamesfunk7614]

I assume jet fuel is used to power the APU, so the Gimli Glider wasn't able to use the APU. They had to use the RAT to have any power at all.

[@andersjan25]

Here after PIA crash. RIP. They spotted RAT was active on the doomed flight.

[@tjsynkral]

RAT deployed in Pinnacle Airlines Flight 3701 as well... sadly the pilots wasted time trying to restart the engines instead of using the RAT for a more controlled dead-stick arrival.

[@bryanjudefernandez2195]

wow your channel grew so fast. i was with you ever since 20k

[@mx5mke]

4:25 "The Hudson River Landing" ==> "Cactus" 1549 was an A320 from JFK. YOU fly an A320 from JFK. Have you tried the 1549 scenario? (In a simulator ) Did you divert? Successfully? Did you "ditch"? Successfully?

[@vasek1986]

another amazing video Joe, keep up the good job!

[@danielherron5597]

i agree!!

[@flywithcaptainjoe]

Thank you very much :)

[@dakerbal]

4:23 Something really important about the Hudson crash was that the Captain turned on the APU quickly after the birds hit. While this wasn't listed in any procedure, it was somewhat fundamental to the flight safety. The RAT did deploy momentarily but at such slow speeds for ditching the electrical power may have been limited and the flaps would not have been able to quickly extend; the cabin lighting would also have remained off and some of the cockpit displayed would have been off. Turning on the APU allowed more reliable control over the aircraft *and* most importantly it meant that the aircraft was no longer in alternate law (which it entered once the RAT was deployed); while largely inconclusive in the investigation it was noted that the airspeed of the aircraft was at about the top of VLS (approaching stall speed) and if the Captain had not activated the APU there would have been no stall or VAlphaProt protections whatsoever. It turned out that in the flare for ditching the Captain expected the aircraft to pitch up more to reduce the vertical speed but the aircraft was in normal law thanks to the APU and in VAlphaProt so it refused to pitch up any higher lest it stall; if the aircraft was in alternate law and if it had stalled the vertical speed would likely have been much higher in the ditch and possible less safe.

[@QuickMovieTV]

Hi Captain Joe, erst einmal ein großes Dankeschön für deine Videos, welche du, trotz deines durchaus stressigen Berufes, hochlädst. Nun eine kurze Frage: Kannst du ein Video über die genauen Unterschiede der Geschwindigkeiten (IAS, TAS, GS, Mach) machen, denn ich verstehe diese noch nicht genau. Vielen Dank und mach weiter so!! :)

[@Revoltec120]

IAS: Angezeigte Fluggeschwindigkeit relativ zur umgebenden Luftmasse. Wird auch Unkorrigierte Eigenschgeschwindigkeit genannt. Wird direkt vom Staurohr gemessen= fehlerhafte messungen. Bei Airlinern wird dies allerdings korrigiert. Hier spricht man von CAS dann. Trotzdem wird es auch als IAS benannt, also bei Airlinern IAS=CAS.Unterhalb von FL270 ist IAS von Bedeutung. IAS= Die ''wichtigeste'' Geschwindigkeit, da die angezeigte Geschwindigkeit IAS über den Staudruck gemessen wird. Der Staudruck ist ein Mass für den Auftrieb. Somit ist auch die IAS ein Mass für den Auftrieb.

[@Revoltec120]

TAS: True Air Speed. Die ''echte'' Geschwindigkeit bezüglich der umgebenden Luft. Bedeutet hier wird alles berechnet. Wind, Windrichtung etc.

[@Revoltec120]

GS: Ground Speed. Geschwindigkeit bezüglich der Erdoberfläche

[@Revoltec120]

Mach: Alles über FL270 ist Mach ''wichtig''. Geschwindigkeit bezüglich der Schallgeschwindigkeit. Mach 1 ist Schallgeschwindigkeit. Passagier Flugzeuge fliegen bis zu 0,92 Mach (nur die großen 747-400etc.)

[@flywithcaptainjoe]

Danke! Die Themen werden auf jeden Fall in Zukunft geklärt! Grüsse joe

[@nicholaslee5423]

In the Miracle on the Hudson, Cpt Sully started the APU. Also, you wrote minimum instead of maximum in your video

[@danilolimadossantos1]

NTSB report showed that it was on the extended position (probably automatically deployed after the engine shut down) and for the batteries, it's minimum, because that's the minimum autonomy mandated by the rules

[@tomstravels520]

Yes he did but it takes a minute or so to power on so the RAT took over until the APU was fully activated

[@SwirlingSoul]

Nice thing to háve on a plane! Makes me feel a whole lot safer.

[@SwirlingSoul]

I know, but the idea of a dead stick landing, withOUT a RAT....now thát is scary.

[@FireAngelZero]

Love the voice over at "Blue Hydraulic System" at 2:47 Could you cover in one of your videos why landing gears are tilted in different directions, and why others with double bogies are straight? So why is the 777 and A330 main gear bogies are tilted more towards the back and why the 767 is more forward? Thanks Captain Joe!

[@jamietube5856]

Please explain the WiFi on airplanes

[@AMStationEngineer]

Most in-flight broadband systems utilize 'proximity linking' to connect to cellphone towers while over areas where cellular signals are available. For areas where no broadband cellular exists, Ku band satellite communications is used to interconnect. I believe they use a technique referred to (in engineering slang terminology as "spot beam projection mapping/tracking", which anticipates the route of flight, and maintains communication with one of three satellites triangulating the signal. The WIFI system used on commercial aircraft does not, in any way (with the exception of the 400~ power system) interconnect with anything else on the aircraft, to protect from hacking, or a cascade interruption which could affect any of the aircraft's systems.

[@michaelspears8032]

They can also connect to satelites, an example of this is inmarsat. Not sure entirely but I know inmarsat can provide wifi through satelites

[@seanet1310]

what aspect of wifi on planes?

[@m1ke1981]

He did a video on that. It’s here somewhere

[@justinpersaud863]

Wifi costs money, all you need to know bud

[@themarshmellow410]

Gotta say, never had much interest in airplanes but after watching a few videos from you ive grown intrested. Its really cool how these huge metal vehicles operate and how all the backup system work. nice to see so good explanations and i feel a lot more safer now when flying (i felt safe, but safer now). You've got my sub!

[@-ragingpotato-937]

Yo dawg, he heard you like redundancy, so we gave redundancy to your redundancy so you can be redundant while being redundant.

[@DBR00]

As far as I’m concerned, that’s redundant. Don’t you think?

[@EricWangericericericericeric]

Your English is so well spoken and you're my primary source for learning about aviation. Thank you!!

[@artoismta]

Sorry about this buddy but in sully captain Sullenberger started up the APU

[@bennylofgren3208]

Donavan Emanuel They used both.

[@flywithcaptainjoe]

Donavan Emanuel by the time the APU started the RAT was already out,it takes about 1minute to start the APU.

[@shaun_rambaran]

That's such a clever device. It's so reassuring leaning about all of these ingenius redundencies. They help to counteract the too-many episodes of 'Seconds from Disaster' I've been looking at.

[@Arcadiez]

Can you tell me the idea/concept of pulling the stick back on a stall instead of pushing it forward like the rest of aircrafts? If you enter alternative mode which shows on the ECAM you still have to push it forward as the plane can't recover by itself(That air france flight failed to acknowledge). You have stick pusher, right? Seems better to have a push down moment incase of stall in all modes/scenarios. RAT has to have a max speed right? 140kt for low speed. But does it come out at 0.76M automatically? Wont it create enormous parasite/profile drag and the blades tip will over speed and stall, maybe even disembark. Last question, you may not know this exactly but does the RAT create a yaw moment of the aircraft? If it does, are you restricted in crosswind? Sorry for so many questions but the ATPL books don't explain that much about airbus or RAT. Keep up the high quality videos captain! :)

[@Rathtrainer]

Did you see how small the turbine was? I doubt it's able to cause any noticeable torque or drag. The landing gears are larger, and they're meant to be used all the time. P.S. Someone please correct me if I am speaking nonsense.

[@SamiJumppanen]

Arcadiez I only know what I saw: the blade angle is adjustable, that will prevent overspeeding. But I wonder if you meant the moment it is opening? And the effect on yaw or gliding should be negligible, as there is no significant surface area compared to the size of the plane.

[@Firecul]

The *only* reason to pull back when stalling is if you are so close to the ground you'll, never regain control. In that case it's better to belly flop rather than nose dive.

[@Arcadiez]

Rathtrainer VLE for A320 is 280kt EAS or 0.67M so why not a RAT max speed? He stated that the RAT comes out automatically, but that seems irrational incase it has a max speed restriction, even at higher speed the blades will not be able to spin due to too high tip speed and high dynamic pressure. Any type of drag at one site compared to other will create a disposable of forces. I'm not focusing on so much on the asymmetric blade effect but more on the fact that you have an object that will create parasite drag, especially as the parasite drag increases with speed. The question is, is it noticeable. I know the rudder is extremely strong and the CFM 56 engined are strong but still. Got a A320 TR or any aerodynamic engineering/physics degree? :)

[@Arcadiez]

Firecul42 But on airbus you pull back in all cases except when you're in alternative mode. But in every other aircraft, small or big you pitch down to reduce the AOA. Every pilot get taught this, but then get taught to pull back on their airbus TR.. I get your point. But if you're stalled then you only option is to push forward to try to regain control even when you're close to ground otherwise you may fall like a stone especially with swept back wings(Tip stall).

[@anthonybyrne7332]

Captain Joe, at -4:26 you mentioned that the RAT can power systems for a minimum of 20 minutes in-flight? Is this so? Or was that actually the maximum? Also, why is the RAT not mandatory in the industry? The Avro/RJs, Embraer jets and CRJ family do not have RATs installed from the manufacturer at all. (Noting that the new E190s only now have these fitted). You may recall an Avro/RJ/BAE146 run out of fuel while circling for landing carrying an entire Copa Football Team en route to a game in South America in 2018-19. The plane crashed after it ran out of fuel, killing most on board. However I thought that if a RAT was installed, this may have given the pilots enough time to obtain vectors and maintain and glide and approach to the runway, even with 20 minutes available. To my next question, does the RAT run off an independent fuel supply? If so, then my above case study would have been doomed anyway unfortunately. Perhaps a mandatory sub-reserve fuel supply connected only to the APU and RAT would be an idea. Do you agree that it should be industry standard to have RATs installed on all medium to large RPT aircraft? Thank you Captain Joe.

[@mikep9604]

It is the aircraft batteries that can give power for 20 minutes.

[@tomstravels520]

No the batteries power the plane for 20 mins. The RAT keeps it powered until plane reaches less than 140knots. And no the RAT is powered by the airflow as mentioned in the video. The airflow spins the blades. It’s the final resort if your plane runs out of fuel like Air Canada 143 or Air Transat 236

[@peterhunt30]

do you like the 787 or the A350XWB

[@Simoncuong]

Peter Hunt s A350

[@ConorHDGamingBT]

787

[@itzrally7]

Peter Hunt A350

[@peterhunt30]

cool

[@peterhunt30]

both are carbon fiber materials do it all comes down to comfort and inside

[@BoulevardFan28]

You explain complex systems in such an easy-to-understand way!

[@Caleb_Guffey]

2:48 wtf

[@bolanscott7188]

Never to late to learn something new even if ill never need it.!! Well explained

[@jeanclaudebizumuremyi8085]

SIR, why airplane engines not having a protection against bird strike?

[@hdjdjdhhfhxjxnxn8311]

Because bird must protect himself and avoid from the engine 😂

[@bobgillis1137]

Very cool. The windmill was deployed on Transat flight 236 into the Azores, saving the lives of all aboard.

[@novymundus]

In June I fly with Airberlin to Rhodos, maybe you are the Pilot ^^

[@deniztugay8877]

Lennart hi, don't forget to visit Marmaris with www.yesilmarmaris.com fast catamaran's.. the are great)))

[@williammiller5071]

On The Harrier (AV-8A/AV-8C) it is located directly in front of the tail plain. It takes less than a second to deploy in case of Hydraulic failure.

[@CCSTechno]

Have you the FSLabs A32X ?

[@dennislincoln5369]

I really enjoyed this episode about RAT and you explained it very well!!! I'm not a pilot and I understood all of what you were saying!!! Thank you Captain Joe!!!

[@うぱうぱ-l8i]

Please. I would like to have Japanese subtitles by all means ...

[@felobatirmoheb4884]

Are u asking for a friend? Because your english is dope

[@crazygirl_irl]

Hi Captain Joe! Just to let you know that your videos are getting better and better every upload. Can't wait for next videos. Keep it up ;)

[@carlfernald4355]

why aren't there multiple RAT's to get more power

[@psirvent8]

Because it's only for emergency and in this case one rat is enough to power the essential systems.

[@emily36130]

A bigger RAT ore multiple RAT's would cause more drag and the plane slows down faster.

[@kabalder]

Yeah, but another RAT could power the coffee maker.

[@anonymouse7379]

The best part of your videos is that is most conventional easy to understand who didnot knew about airplane too much....😇😇😇😇

[@ajmatt]

Why not add a second RAT on the opposite side?

[@SkyCharger001]

Perhaps that space is already used by a different emergency/back-up system. Perhaps the PTU.

[@n7565j]

Cpt. Sully's A/C is on display down at KCLT, I was down in CLT doing some training so I took a minute on the way home to check out the A/C. The rear end of the A/C was broken off during the landing, but other than that, it was in amazingly good shape! The museum was empty that day, so I got a personal grand tour of the place :-) My friend and captain for AA, (then USAIrways) said that he had flown with Sully the week b4 the ditching, (I think he was dead heading home to CLT), and was glad he wasn't with him that day ;-) My friend and Capt. says that the A320 is by far the finest A/C he's ever flown, and if he has his way, (and the economy doesn't go crazy), he'll retire flying that A/C ;-) (He's only got 4 years left) Love your videos Capt. Joe :-) (I am a lowly private pilot, but I love all things aviation ;-)

[@Feta_Cheezz_Montgomery_Burns]

RATM = Rage Against The Machine

[@MrDaniyalAh]

Few days ago the PIA flight that crashed in my city had a dual engine failure and had the RAT deployed.

[@adamkrajci7628]

Joe s pickup line would be like: „Hey baby that hotel room where I’m staying is really great for romantic night, you can see where I’m going with this“

[@maxwellwynne-shepherd7852]

Joe: On an A320 Picture: A321

[@b0lefee]

Thank you Joe for your videos, I really appreciate your work ! In the case Of the Hudson river, there is more to say. Captain Sullenberger used his APU a few seconds after the birds strike. The APU needs about 2 minutes to be operationnal. Then, the RAT and the batteries covered the gap during these 3 minutes. I guess that any gap would cause the aircraft to be uncontrollable, but fortunately it's inconceivable because of redundancy ! Am I correct ? I also react to an other comment. The RAT doesn't provide a lot of power, but it's a simple system. A simple system is more economic and less likely to stop working, especially when needed ! Thanks you again !

[@omerdayyani]

My technically knowledge is perfect now in airoplane. This is making me very easy to understand and makes me learn more and more. Many thanks Caption Joe.

[@Whimsical3D]

Liebherr Aerospace developed a pretty neat fuel cell emergency power system (FCEPS). It's supposed to offer a constant (as in non-fluctuating) emergency power source during glide and after landing, without any negative effect on aerodynamics of the plane, like extra drag.

[@StandWithRussia]

Captain joe, My question is. If the jet engines were to shut down in mid flight. Won't they work like the RAT? The big fan blades start spinning on their own from the speed of wind hitting them while the plane is gliding through the air? Thus creating electricity and hydraulics?

[@tomstravels520]

DIY MAN yes it nowhere need the speeds and as you slow down like the RAT they would start to slow down and control would be much harder. Better to start the APU and have a completely operating electrical and hydraulic system

[@BrianThorstad]

I love watching this video again and again. Great engineering explained.

[@ricktatum]

Thank you for supplying the information about R,A,T, very good narration of explaining how the emergency power works

[@TheSentinel091482]

First video from from Joe where I didn't learn anything new because I already knew about this lol but it is still better when Joe explains it.

[@Tonatsi]

Would it be beneficial to have 2 RATs? Would the required speed be essentially 70 Knots, or slightly higher?

[@DUIA77]

Thank you Capt Joe, I did see one aircraft landing at LAX with the RAT deployed.

[@utterlyawesomevideos7993]

I love these videos - I will be a qualified pilot just from sitting at my computer desk soon! Hope to meet you one day in Berlin Joe! if I DO see you, I hope you don't mind if I ask for a photo with you! Cheers!

[@stantonbentley2534]

Great video! Gives a small but interesting insight into how much engineering goes into modern passenger planes. There's so much the designers have to think about.

[@AlonsoRules]

The RAT played a critical role in the successful emergency landing of the Gimli Glider in 1983. It allowed Captain Cameron to be given enough instruments to land the plane.

[@Cuss911]

On Airbus A350 & A380, the RAT provides AC power ínstead of hyd power. Possible with new generation servo controls : EBHA (Electric Back up Hydraulic Actuation) using electrical power to pressurize their own hyd circuit in case of general hyd failure!

[@niz6543]

im glad you speek slow and clear its good to understand for me :) thank you

[@1206dj]

Can't wait to tell people there's a rat on the plane! Really enjoy your videos. Keep them coming.

[@Shuriver]

the Leer jet has the biggest of that underneath, I think it's permanently there and it looks like an engine on reverse thrust, I'm not sure if it's Leer jet, but I know it's a small jet plane

[@jacobmillion7545]

At 1.49 you said that the batteries would only last for a "minimum" of 20 mins of flight (i.e more than 20 mins), yet at 2.13 you said they will only run for "20 minutes"?? Did you mean to say maximum?

[@mx5mke]

p.s. Kennedy Airport to Gatwick is about 3500 miles. A320 range is about 3500 miles. How close to maximum range would a carrier schedule an "revenue" flight, allowing for reserves, weather, alternates, etc?

[@saqibmudabbar]

Captain Joe! Your explanations are supercalifragilisticexpialidocious!

[@raptorf_2228]

We love you captain, you explain very well with your smiling beautiful character, ALWAYS BE HAPPY AND HEALTHY ♥️🌹🌼🌺🌻🌷🙏🏼

[@licensedblockhead]

so i guess jeff skiles glass panel wasnt on during the landing in the hudson because it looks like the FO's panel is shut off when the RAT is being used

[@sadikovicarmin]

I believe this is how AirTransAt flight 236 landed when they ran out of fuel over the mid Atlantic. Even though it was a glider, at least it was a controllable glider. As the green and yellow hydraulics were lost due to engines starvation the RAM kicked in to control the aircraft by providing minimum electrical power to the aircraft instruments. I also believe it was an Airbus A320 as well.

[@brandonsg1367]

On the Hudson River landing, the APU was still functional so they turned that on once the engines failed

[@speedbird9313]

The RAT still auto deployed.

[@WDG13031]

How does a pilot (with regards to Boeing, Embraer and Airbus) use the ILS to land? Will you do a full How-To video on the ILS?

[@vim66]

thanks,Joe for introducing us to the nitty gritty of airplane instrumentation.enjoyed the vdo.

[@rodolfoalmiron8362]

The first incident was with Air Canada, they made a movie of it, very interesting, and all because they didn't know how to convert metric system.

[@alexlopl8978]

Dear captain Joe Thank you for your amazing videos, it's Always à big pleasure to see them. thank you so much

[@nickshare6808]

I just want to ask, why is there no solar panel on a plane as they are 50:50 of the time flying under the sun.

[@DaveNorthWest]

This is awesome. Your channel has taught me so much. I take allot of flights and it's cool knowing how all the stuff works. Thanks

[@Dana_Danarosana]

I see it in other comments... but I also recall Sully saying he started APU. Was RAT still necessary for hydraulic control and just not discussed?

[@engineerdanny9823]

0:32 it wasn't the a320 it was the a321.. informative video BTW

[@johnleelee2702]

thank you very much. once i asked someone representing an airline about RAT, what she answered is "It is used in very emergency situations."

[@ashokan2812]

Air Transat Flight 236 Dual engine failure due to fuel starvation. So no APU. RAT was the only option which provided basic power as Capt. Joe explained. Captain Robert Piché and First Officer Dirk de Jager flew their plane without engine power creating a record. Souls onboard 306. All survived. In Capt. Chesley Sullenberger case they had fuel to power the APU.

[@rudiechinchilla6746]

Cap.Like your vids!They re so clear and one undestands em with just your explanation and additional help visual resourced.Rudy from Costa Rica

[@osamaedris8376]

5:41 what are this airlines is it's the number of successful deployment for ram ?

[@jivansjohal]

They used this very well when the gimli glider incident happened. A very important tool for those rare bingo fuel incidents

[@tsuipoko]

i think it was the 1982 BA9 Jakarta incident when all 4 engines stopped working when the RAT was activated for minimum power for cockpit control

[@istvanotvos6254]

Thank you for your fluent way of explaining! 😍