Why is the LANDING GEAR TILTED? Explained by CAPTAIN JOE
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- Опубликовано: 25 июл 2018
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Gear down, three green and let´s get started!
So let´s look at the different types of landing gears. The most common one out there is the single axle landing gear with a tyre fitted on each side mounted to a large strut. Mostly used on passenger jets such as the Boeing 737 and Airbus A320.
With increasing weight, you need more surface, so more tyres to evenly distribute the weight of the aircraft.
So if we look at the main landing gear of the Boeing 757, you have the main landing gear strut, which by the way is filled with nitrogen acting as a spring force and hydraulic fluids for dampening. Then you have the truck or boogie, and four tires in tandem pairs. But more importantly, for today´s topic, you see this little hydraulic actuator right here, the so-called truck positioning actuator aka the tilt actuator. This little actuator is attached aft of the main gear strut and pushes the rear wheels downwards forcing the forward wheels to move upwards as the truck is axially mounted to the main strut.
As the plane comes in for landing, the rear wheels touch-down first. The actuator holds up against the pushing force, otherwise, the rear tires could bounce up, slamming the forward tires into the ground. Once the weight of the plane presses the tires onto ground, a pressure relief valve opens up and the actuator collapses letting both tires touch down. This all happens in the split of a second. Once the actuator is fully compressed, so weight on wheels, it triggers the air/ground sensing unit from air to ground before the nose wheel has touched down, automatically extending the ground spoilers and allowing thrust reverser deployment and depressurizing the aircraft etc.
But see more in the video
Thanks for watching, all the best your "Captain" Joe
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Наука
I’ve been an aircraft maintenance professional for 20+ years, and I can tell you that very few pilots have this much knowledge about aircraft systems. Troubleshooting discrepancies would be much simpler if all pilots were this well informed. I’m very impressed.
So nice to say that really nice
I agree. The number of times that I've ran in to a pilot that had any idea that planes don't fly with dragon and unicorn power makes this incredible to listen to. I'm impressed. It is fun to tell them that the discombobulator in the flux capacitor is the culprit. Especially when they say something about that being their first thought too...hardest part is keeping your face straight...
lumpheadthump same here. 12 years AMT. this is one of the few pilots we might not be able to bullshit. Hahaha. Surprised he actually knows so much on the mechanical side.
I'm going to keep this in mind as an aspiring pilot who's yet to start for his PPL/VFR rating.
Really?? I thought they're supposed to know😱
comments:
1% about the video
4% about the video being 7 minutes and 47 seconds long
95% about why the heel was there
0.01% explaining the distribution of the comment section.
@@HPD1171 0.001% explaining the explanation of the comment section
@@Feroxxi 0.0005% Explainers explaining the explainers.
@@HPD1171 🤣
1/320% distribution
As a retired airline pilot, I am amazed, despite their complexity, how durable and reliable the landing gear are. Respect to the engineering and maintenance that went into the sequencing of the gear doors.
you must be lucky to lived ur life as a pilot. was this your dream?
@@kingofaviation Not luck, dedication to studies.
what does retard mean
@@theminecraftpig661 can I became pilot
"The 777-300 is at great risk of a tail strike on rotation"
737-900: Hold my beer
Tail draggers: hold my vodka
MAX 10 intensifies
B-29: Hold my... eehm... i dunno
KLM 747 flight 4805 : hold my tailstrike
*A340-600 enters the chat*
Haha dutchpilotgirls heels? Joe performed a *consentful* 'touch and go' last time she was there ;)
LMAOOOOO
Two words: foot fetish
Whoah guys, I think this is quit inappropriate.
Joseph Caesar Padrón Ooh sorrryy
jerry p
Yeah he gave us a clue, by showing her shoes and then videos of a landing gear going in and out. Joe's landing gear went in and out a lot that night.
What were you guys doing together when she forgot her heels ;-)
Abnormaalz how does one person accidentally walk out with one shoe only?
Abnormaalz 😂😂
( ͡° ͜ʖ ͡°)
I ship it
i'd "Plane" it!
That was awesome. After spending 28 years as an electro-environmental tech, I loved it. Pilots are not required to know the details. If it didn’t operate properly, they have a checklist, can they continue, abort or IFE. As a private pilot student, it gives me more confidence knowing how things work. It’s an advantage as long as it doesn’t make you a cocky pilot.
Wo ist Captain Joe jetzt im Apri erreichnar
3:59 The answer is so simple, you think I am Joe-King
got ya there
🤦♂️
you copied my comemnt?
LOL
Antonov pilot when gear down: "600 green..."
Me when gear down: 0 green
Aaden Leon all red lol
Lol
which antonov tho
Antonov AN124/225
How does Dutch Pilot Girl leave one shoe behind
Did she go home with one shoe??
No. It means she's still there ;)
No they got frisky
Bang bang bang
@@forestragland1657 ik
He’s a lunatic it’s the Dutch pilots shoe
Thank you so much, this is such a learning experience for me. I am currently building a model 777, and was curious on its running gear, it's like my favorite. You've helped me understand it much more 🤗
4:30, ahh yes, a 747 made of the strongest material ever, plywood
At least it's cheep. Jetblue can operate them now
Plywood and bailing wire and duck tape !! lol
@@michaeld1906 no how dumb are you?
its sticky tape not duck tape
actually hi speed tape we use on the aircraft in the navy, lol
This is really helpful Joe! I've been on many 777-200s before, and never noticed this difference! Keep on making more videos!
High heels left behind? Someone's done some fun stuff with a Dutch pilot hint hint
MelloOwnsRyuuzaki she learned how sidestick...
How does one walk out with only one shoe? That’s hard to ex-plane ;)
When the dick so good you forget your shoe
what are you talking about? why do you have to be a pervert? we were talking about planes and heels you pervert
Pervs! Lol
I'm glad you mentioned the C5. The first time I saw one up close at an airshow, when I was 15, I couldn't figure out how it fit in the wheel wells.
It seems like ALL of your videos answer the questions I have always asked myself about planes. This is great!
Never thought about it. :) Thanks for the insights, Joe! Excellent vid. Always delighted when I see a new one is up, for they're not only informative but it also puts me in a good mood to listen to and follow your explanations. Happy landings, captain!
Andy Kashu thanks Andy, such comments are my driving force!
5:57
*raises landing gear while on ground
[x-files theme plays]
Underrated
Captain Joe: Explains everything professionally and is very detailed
Also Captain Joe: "So the triple 7 300 has this big diagonal THING..."
My dude I just subbed. Was super fascinated by aircraft landing gear and this was a great video to boost my knowledge. Thanks my guy look forward to more content and watching your old videos.
i think it is tilted so pilots can butter
gg
When you have tilted gear it’s an automatic butter
Th3DevelsLettuce a very smooth landing
@@lukesinsigalli9045 i like it
Grant Portnoy And/or Airforceproud95
Being a pilot is so fascinating and I've always been in love with it...
Great video Capt.Joe. Would have loved to see the B-52 gears in operation, especially with a stiff crosswind.
Good Job Sir, you're one of those few Pilots who really understand the aircraft systems. Salute to you Capt. Joe 🛬
30% of the comments: appreciating the video
1% of the comments: Video length being 7:47
69% of the comments: About the highheels...
유창완 sneaky bastard...
유창완 You forgot the other comments on the 7:47 timestamp.
Oh boy 69
I was just about to comment the length of the video 😂😂
🇰🇷
Awesome video!!! I had this question for a lot of time!
He wa probably checking her flaps
😅
What an appalling joke... and I love it
Thise flaps when a tarantula molt to see if is a female or a male
😂 and 69 likes this is great
And making sure she could rotate 😁
Nice explanation and thank you for the shout-out to the mechanics maintaining this equipment!
Awesome video Joe.
I really like the idea of being a pilot and having a You Tube channel at the same time.
You explain everything so smoothly. Thank you a lot 🙏. I want to become a pilot too. God bless 😇
Hope you have a good future in flying a A380 😉👍
Techniques For Everything Thank you 🙏
Suzana S the world is currently in dire need of new pilots
Hi Joe,
Greetings for the day.
I really enjoyed and getting right information about aircrafts.
I wish he could be our physics teacher in our school. He explains so patiently. Lovely♥️♥️
7:07 man your screwed if those wheels don't turn
Something like that happened to a JetBlue A320 back in 2005.
ruclips.net/video/RgnkY4xzaZE/видео.html
You’re
jcwat well that’s why you trust the discipline of the military haha
JetBlue
then just hope for strong sidewind or do a quick handbrake turn sideways just before touchdown and let her slide in...
Ich verfolge deine Videos schon lange aber ich muss nun einfach mal was loswerden:
Deine Videos sind von der Qualität und vom Content her einfach auf einem solch hohen Level... Das ist einfach unglaublich :) ich kenne keinen RUclipsr der auch nur ansatzweise einen solch hochwertigen Content produzieren kann wie du :)
benedikt170 dann musst du dir mal PhysicsGirl, Mailab und so anschauen... Ist auch sehr hochwertiger Inhalt.
I live literally right next to the Dover air Force Base. I get to see c-5's and c-17's take off all day. It's something to see the landing gear turn and go up and watch something that big fly
I am impressed with your knowledge and experience of how an aeroplane work. Thank you for sharing and explaining your knowledge. Well done!
I was always wondering why the gears were tilted! Thanks for uploading Capt. Joe!
The episode is 7:47 long. Coincidence?
I think not.
Yeah lol
I've worked on the B52 and thought it's landing gear was unique and rare but you've opened up my eyes to more. Entertained and informed I am. 😁
Thank you Captain for this great video, nice job. I was wondering if you could make another one about weel breaks (especially autobrakes and the way to calculate the right autobraks setting for a certain distance to vaccate from this or that taxiway, for both a320 and b747, as you used to flight both). Thank you :)
Great video Joe! I surely learned something today! Thanks!
True
You and Dutch Pilot Girl are hooking up. Do not deny it.
In the 50 most asked questions to pilots by people video, Joe admitted that he was still dating a passenger he met.
@@M4A3 He is bragging. Why else say that in the video?
@@aniksamiurrahman6365 for clout obviously
@@bellemaestro474 he was liyng to hide that he dates dutch
Well if they werent screwing around then why was the heel there? she just couldnt have forgot it cause nobody walks home without their shoes on....
Well that answered a long asked question for me. I've been in the landing gear compartment (on the tarmac) of a C5B. I couldn't figure how they got that boogie configuration to fit in there. I only assumed that it swiveled in some manner. Unfortunately I wasn't there to see it arrive or leave.
It is awesome how you incorporate actual footage (no pun intended) into your videos. It is awesome to see these engineering marvels operate.
The way you were holding the high heels reminded me of Cinderella 😉😂...congrats on 600k!
so you picked
Great vid. Only a small correction..the oil in the strut is for damping not dampening
@Captain Joe thank you for this awesome channel. I'm finding more and more cool info here.
Cap'n J, you've just answered a question I've had in my mind for a lonnnnng time. I always thought that even forces need to be placed on the gear as it touched the ground, but that quite evidently is not the case; it's about space planning and, well, the laws of physics and adroitly managing mass. Brilliant video. Thank you.
Yaaas! Finally someone explains what gear tilt is
LittleSophia _ I would think it was pretty obvious why they tilt.
halcyondaystunes surely it's not just the fitment of the gear into the wheel well? That doesn't explain why the 777's gears tilt AFTER it is lowered. I've always thought it's to smooth out the touchdown so that not a large amount of wheels are contacting the ground at the same time, which leads to a higher shock to the fuselage.
My gosh thanks for sharing actually amazing facts! I never even wondered why there is gear tilt it just looks stunning😂
Thank you for the knowledge!! I enjoyed watching this video!!
Glad to see you use the dance step hill/toe, tie/hill analogy to demonstrate the landing gear of an aeroplane.
I love that you mentioned the c-5
Simple when you think about it, but then I had never thought about it. As long as they go up and down and lock when they are supposed to I am happy. But very interesting all the same Joe.
It's amazing the engineering that goes into an aircraft. There is a ton of thought that goes into every system. Great FYI!
Finally, Spanish subtitles to understand the content of the videos. It was time. Thank you
How about Antonov's landing gear? It looks interesting...
there s just a lot of wheels
What is so special about Antonov An-26?
That’s just a bunch of aircraft grade semi trucks wheels
FINALLY.
Finde deine Videos einfach super! Weiter so!
I always thought the tilted gear would also give some sort of a softer dampening zone on initial touchdown. Like if you come down on the left side first it could give a gentle nudge to the plane so you level off with the ground before the main weight of the aircraft comes down.
Its quite cool seeing that slow mo at 1:50. We're all used to having a distinctive bounce when landing, before the wheels touch down again. And obviously the first bounce, the first contact, sets the wheels spinning. I assume this helps ease pressure on the wheels so when they make contact again, they aren't idle? Or is it bad that this happens?
Lowkey thought it was to make the landings smoother.
Eric 6645 I can see it being an added benefit or at the very least, a happy accident.
I mean airbus 330 is a *B O A T E R* machine so i get why u say it
butter landing
@@CSXrailfanAndNS you came from swiss001
0:16 lucky guy 😎
Good info. Also only 2 wheels contacting runway first is less torque stress on the struts. If 2 =XX and 4 =xxxx and 6 =xxxxxx is the amount of rotational stress at the strut and wing beam mounting points. Another is cost in tire replacement, as rears contact first each and every time they wear faster. and are rotated out on a replacement schedule. Vice versa for front wheels down angle.
This was a great explanation. Always wondered why the 747's had different systems then others.
Just met Captain Joe at ORD nicest captain I’ve ever met thanks for the kind advice.
No Way! Very cool. What was he doing there?
Did you deliberately make the video seven minutes and forty seven seconds long? “747”
haha!
Woah 😲
Wow
Jack Budd i
Shook
As I'm on the way to become an aircraft mechanic, I say that such knowledgeable information is highly valuable to me. It's even better than that of the booklets we're given by the aviation school!
This is so helpful BTW, and it makes landings so much more buttery!
i am not even a pilot, i just love learning about this stuff. great videos, keep em coming!
Aside from issues of storage space, the biggest reason for the landing gears to be tilted is to prevent excessive lateral force on the landing struts from having all of the tires dragging against the ground at the same instant. That lateral force won't break the struts, because they're designed strong enough to stop the plane using the wheel brakes alone, but the lateral force CAN create vibrations in the landing gear system that could damage parts throughout the plane after a few hundred load cycles. The belly gear supports the entire weight of the belly during the first instant of touchdown, so there is less time for the belly gear to start vibrating upon contact with the ground, and it isn't necessary for the belly gear wheels to be tilted as much to prevent those vibrations from occurring. The wings, on the other hand, still support their own weight by generating lift during the first instant of touchdown, so the wing gear has more time to generate potentially harmful vibrations as the wheels contact the ground, so spacing-out the contact time by tilting the wing gear wheels more is beneficial. If it were the other way around, then the belly gear and wing gear would be arranged differently to provide the necessary tilt for each.
shawn.
An eagle lands with its feet pointed upwards - do they have struts?
Frobe.
You say something relevant then; why do eagles have their feet pointed upwards when they land?
Fraud.
It took you a while to think that one up; that is not the reason anyway, eagles have their feet pointed upwards to create drag and slow down in order to make a soft landing.
As a mountain biker, I've crashed and gone over my handlebars a few times, which is a bit like an eagle landing ;) , so I believe I can provide an expert answer to this question:
Eagles land with their feet tilted up so they don't accidentally drag their knuckles on the ground and scrape off the skin. Also it would be hard to grab a tree branch while gliding forward if their feet were tilted down and their talons were pointed rearward. The comparison to Boeing jets would be valid, except that eagles don't have wheels on their feet, so it's actually a completely different scenario. And yes, eagles do have struts -- the muscles in their legs provide the same shock-absorption on touchdown that struts do on airplanes.
@dwarfedgiant: There is no mechanical difference between grabbing prey vs. grabbing a branch. Their feet are still angled up in the moments before contact.
Great video. It answers a question I’ve had for at least five years now.
i love your show it teaches me to see how different plane works
Captain Joe....sounds like the name of a really chilled out Star Trek Capt haha. I subscribed to this & now my dad is addicted to your channel. His dream was to be a pilot but he became a mechanical engineer instead. He feels he can live vicariously if he watches videos like yours. Dont tell him, but my sister & I bought him helicopter flying lessons for Christmas.
Was your dad pleased with his Christmas present?
_I am just wandering, is all this your own research, or is someone organizing /preparing this for you... I really dig your videos by the way... good job man_
This channel has some great explanations, itll sure help in my upcoming pilot career, im doing a cpl license soon
I mean it would help the OTHERS, ive already done my PPL and there is no way i didn't know this stuff at this point
Awesome, was always curious about that design variety!
Even though it's not their reason for being tilted, being tilted makes landing gears 10 times more beautiful. Especially my ex-love: 777.
Why ex-love? I just didn't see one for a long time. I will probably fall in love again when I hear those GE90's and Trent 700's.
you mean shoeless
Trent 800. 700 is A330ceo
Ge9x
6:46 the German 3 hand signal. Inglorious Basterds taught me something after all.
megaman5125 yoooooo! for real 😂😂
hows that german? how would you signal 3?
In the USA, you use the middle finger, ring finger and index finger.
@megaman5125-haha...just watched the movie on SHOWTIME!
It's not really German, it's most of the world. Outside of the US, the UK, and a few other oddballs such as Japan and India, most of the world does what you call the "German" way, which, again, isn't specific to Germany nor originates there.
Love your videos and...i wear high heels too;-) tilted gears are so self evident but i never thought about space in the gearbays...thanks a lot and greetings from Germany ;-)
You have a dream job. Love your videos keep them coming
Can you do a vlog on all the alarms, bells and whistles you have from the cockpit in the event of an emergency please? woot woot.. pull up.. brrrringggggg (engine on fire?) etc?
Also one on pilot induced errors... I seem to remember a plane crashing due to the pilot flying in to wake turbulence and then using the excessive rudder inputs?
The plane that crashed was an Airbus 300 operated by American Airlines.
As I've been enjoying your informative videos, I've been wondering how those little toothpicks of a landing gear can handle all of that weight and those forces (lateral forces especially) without snapping.
Landing gear struts are not "toothpicks." If you look at them up close, you will see that they are massive pieces of heavy engineering.
Very entertaining and fun to watch. Thanks for posting this.
Good job dude. I'm getting the 747-400 and 800 type and I was wondering about this. Thank you.
Great video Joe! Notification squad!
#Team
Is it a coincidence that the video length is 7:47
THE ALL ROUNDER Cool Man double coincidence
Yes. Hats off to ground crew maintenance mechanics ! Gear up/down can seem so graceful, almost like a dance. Mirroring how a bird would extend and retract feet.
I wish you had shown the C17 landing gear and the B52 landing gear as well. Both are very unique designs. The B52 however is truly a one of a kind, being that the gear can all be steered in such a way as to allow the aircraft to takeoff and land in extreme crosswind conditions with the aircraft actually traveling down the runway at extreme angles. I hope you will consider doing a second video featuring these two unique landing gear designs. As always, love the videos.👍
Hell yeah! C-5 got mentioned!
- C-5A LM
Wow, captain Joe you are less than 300 subs away from 600k subs, congrats!❤
600,007 by today
I thought he had a million lol
see what one lost shoe can do
Excellent. I was asking myself that yesterday and the answer was given today. Just in time! Thank you v.m
Tu154 has also an interesting gear cinematics, as the B52 that corrects its alignment for crosswind landings.
Hi captain Joe, your logo looks like Monza Race track :)
no, curva grande is a right turn, not a left turn
who like me is having breakfast while learning about landing gear systems by Captain Joe?
Excellent job Captain thank you 👍🏼
Thanks, that was very interesting and informative!
Well done explaination ! Historically retractable landing gear is a complicated engineering challenge as failure is almost always fatal for both the aircraft and pilot.
Even if the first generation fighters didn't entirely belly flop the stress of a poor design to the airframe could be more than the mechanics and sheetmetal shops could correct.
Nice Socks Dude👍
Kannst du die neue Beluga XL analysieren?
Many thanks for your time sir
This was way more interesting than I expected. Thanks.