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Why are the jet-engines placed there? Wings vs Tail

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http://www.cambly.com/invite/mentour Have you ever wondered why some aircraft have their engines mounted under the wings while others mount them at the back of the fuselage? In this video I will dive into the MANY different reasons there are for aircraft manufactures to choose one design over the other. I will also tell you some of my Boeing handling secrets as well as crucial knowledge about super-stalls and other nasty stuff. To join the discussion after and ask me follow-up questions, just tag @mentour in the Mentour Aviation app. Dont have the app? Use the links below for a free download! 👇🏻 📲IOS: https://appstore.com/mentouraviation 📲Android: https://play.google.com/store/apps/details?id=com.teamta.mentouraviation I want to send a special THANK YOU to the channels from which I have borrowed some material for todays video. Make sure to do me a favour and check them out! 👇🏻 AA Productions Link : https://vimeo.com/8511733 Air-clips.com https://www.youtube.com/channel/UCeP7ZHcuDFnN5GQCReHDfpA Learn Engineering https://www.youtube.com/channel/UCqZQJ4600a9wIfMPbYc60OQ Pilot Report https://www.youtube.com/channel/UCpC5RkMvlUgiQtx3Tx9tplw Joe Muschnik https://www.youtube.com/channel/UCWqcCcjkpCiWS60L_DjroFw Understanding Airplanes https://www.youtube.com/channel/UCh7C3C5hKAVZR0SCPhECrMQ
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Text Comments (2319)
redic (1 day ago)
Mentour Pilot I very much enjoy your videos. They are very well explained and interesting for people like me who fly and dont know anything about how it all works, Many thanks.
John (1 day ago)
Came here for the gravel........stayed for the shit!!!
Wild Thang Racing (1 day ago)
Lol, he said "SHIT!"
System Error Message (3 days ago)
this video leaves me with more questions. I always thought rear mounted engines were nicer to fly, i used to play flight sims even IL2 and while they didnt have this in ww2 there were many different aircraft designs. Early jets had the jets in the wings like propeller aircraft rather than under the wings like with all current aircraft. I used to have a lot of fun flying leerjets in flight sims, the rear mounted engines seem more fun to fly. One main question i have is landing and emergencies. When landing a rear engine aircraft doesnt that make tail strikes more dangerous while under wing engines mean that obstacles on the ground can be very dangerous? Also the same way with landing weight and general efficiency and gliding. Also in an emergency where you have to land on water or ground and in evacuating the aircraft, which is safer? From what your video tells me, it seems that for flying, under wing engines are superior but rear engines are better on the ground? @Mentour if you were to own a private jet, would you pick a rear engine one or under wing engine and why? assume both jets are the same size. with an under wing dual engine, would it be possible to only use forward thrust for one engine at 10-15% and brakes to turn the aircraft on the spot rather than reversing? I thought when you applied reverse thrust the engine would reverse the direction rather than using a barrier behind with forward thrust.
Sharang Majumdar (8 days ago)
OKAY
Omnia Sbai (8 days ago)
Perfect video vert easy to understand even if you are not professional
UnifiedGaming YT (9 days ago)
Doesn't the engines have anti -ice?
Mateusz Wojtkiewicz (9 days ago)
I think airplanes with rear-mounted engines look better. They sit lower on the ground and the T-style stabilizer looks so cool. The 727 and the Tu-154 are beautiful airplanes.
James S. (9 days ago)
Here's a question, more pertaining to 4 engine jets. On a 747 or A380, why are the outboard engines so far out? Seems to me if the outboard were moved inward as close to the inner engine as possible, there would be more stability in case 2 engines on one wing shut down. What's your opinion on that?
Saul Alain (10 days ago)
Keep practicing your English fluency Cap, it isn't that good.
Lfour68jr (10 days ago)
I'm curious, are you honest enough to validate that engines were mounted directly under the wing and not in front of the jets, as they are now. You have an animated image that capture the way engines used to be mounted, directly under the wings at about 1.10 minutes in. Can you please find a picture of a jet engine under mounted (directly centered under the wing). Since your presentation is entirely on the undermounted engines that don't exist today, I find it very strange. Don't you?
Frank V (11 days ago)
I bet you hate drones
Pete_ Hine_Of_PA (11 days ago)
Thumbs up for this Video: However won't larger diameter under the wing engines (like the 777) suck in birds & shit easier? ................. Why do some Jet aircraft have two engines under the wing, and one built into the tail making a 3 engine Jet liner? This sounds to me like a dangerous configuration, however I saw a lot of planes like this dominating airports. Reference McDonnell-Douglas DC-10 and MD-11, and the Lockheed L1011 Tristar. ....... Yeah this classy guy did say shit roughly at 9:22 to 9:32 LoL...........
Zack Akai (12 days ago)
To be fair, one upside to wing-mounted engines affecting an aircraft's yaw more is that they can be more easily be used to steer in the event of a control surface surface failure.
King Mollik (12 days ago)
thank you sir we have chance to learning with you
King Mollik (12 days ago)
thank you sir we have chance to learning with you
madmike8v72 (13 days ago)
Excellent video! Very informative, thank you!
Nick Henman (13 days ago)
One of the reasons there are planes with a third tail mounted engine was because of the regulations that prohibited 2e engine aircraft from flying more than 120 minutes from an emergency landing area. This regulation called ETOPS was first introduced with propellor planes which would fail on average 114 times more often than a jet engine. So that’s why you have 3 engined planes as it helped the. To bypass the ETOPS rating.
Mantas Balnys (15 days ago)
That I wanted to hear. Always failing to attach engine in Kerbal Space Program
Steve Diaz (16 days ago)
You do a wonderful job at explaining the various aviation and aerodynamics nuances of aircraft. I think you're making the field and industry more approachable to the would-be interested individual. Good for you sir, Good Job.
Pavel Kostromitinov (16 days ago)
Very interesting video, thank you. However, there were so many benefits to wing-mounted engines mentioned, that I don't understand why some aircraft DO have back-mounted ones? I expected there would be a tradeoff between this-and-that (like efficiency vs safety), but I've heard no such thing...
Matt Fairfield (16 days ago)
Hi Mentour! Is it possible for pilots to wear long sleeved white shirts while on the job? Like, if you have tattoos on your arm or something? Thanks!
Alucard Pawpad (17 days ago)
Thanks for the education <3
Ikerus 007 (17 days ago)
Hello everybody, just a question. Can you be a pilot if you have to wear glasses (if so what's the upper limit of "blindness" you are allowed to have xD?) I have heard that cargo pilots are allowed to wear them, but I would like confirmation. Thank you kindly 🙂
gonzchi (17 days ago)
Fantastic, your videos are awesome!
xmeda (18 days ago)
What about engines mounted like TU-104 had... or DeHaviland Comet?
Javier Oliveras (19 days ago)
Overnight I'm so interested in airplanes. Maybe because I desire to fly away from Indiana!!! This state sucks! It's killing me!
2000Betelgeuse (19 days ago)
You sir are not an engineer, you are just a pilot, thus your comments are highly suspect
Miroslav Mandic (19 days ago)
It would be awesome if they build a plane with 2 engines mounted on wings and 2 engines mounted at the back of the aircraft, what do you think is that good idea or bad?
Deep_Blue (19 days ago)
Great posting, very well explained. Simply but accurate, it helps to understand so many things. Thank you for sharing. I wish more like this would be posted instead of all the BS around. Great job!
StepBackAndThink (19 days ago)
1:47 as opposed to changing the spark plugs at 30,000 feet.
CR Rains (20 days ago)
On 4 eng wing pylon mounted aircraft like the B707..inboards are in front of, while outboards are behind the pitch axis of the aircraft. Pitch changes can be accomplished with differential thrust..for instance, pushing up the inboards while retarding the outboards can substitute for nose up trim while maintaining proper total thrust requirement for configuration and phase of flight . In abnormal situations I have used this for; a jammed stabilizer jack screw, a stalled trim motor and asymmetrically.. thrust to overcome adverse roll due to jammed/asymmetrical flap extension on approach. Differential or asymmetric thrust can be an effective technique on wing mounted engines in high crosswind landings also.
Joe Green (20 days ago)
I thought FOD was foreign object debris.
Jon Dunmore (21 days ago)
Such knowledge! Excellent! Thank you, Mentour! And such physics expertise and experience from the designers of the aircraft! So many things around us we take for granted! we get on these metal tubes without any thought to the incredible science that goes into keeping us up in the air safely! Excellent!
Peter Almvall (21 days ago)
Very informative.. Thank you.
FyreCat234 (21 days ago)
i wonder whats the difference between having 4 or 2 engines? the speed is still 900ish right? also why not just add 1 engine at the back like most military planes?
Ray Chang (22 days ago)
Excellent video, Mentour, and very well explained! There was a Beechcraft Bonanza (V-tail) parked at our local airport when I was young and my Dad (an amateur pilot) told me that was dangerous because a sudden crosswind could cause it to dive. What do you think about this?
Parikshit Baugh (22 days ago)
What is the use of having a third engine at the tail of the aircraft ?
Cayrick Pan (22 days ago)
Lots of great info and an excellent explanation. Thanks!
Jaiden Kale's TV (23 days ago)
gravel and shit LOL :D
Gulliver Yang (23 days ago)
dc-10 dc-9 dc-8 dc-7 md-80 md-90...
Eric Stefko (23 days ago)
you have some of the best explanations on the web, even a dummy like me can understand the topic
john ellington (24 days ago)
Rear Engines Throw you outa Seat. Turns on reverse. Speedy bird landing. 747 the power. 4 Engines Hammered. Hasta Luego!
Tom Fortin (24 days ago)
Very interesting discussion.
David Goldman (25 days ago)
Superstall! I don't think I will getting on one of those in a hurry! LOL
Tausif Zaman (25 days ago)
Ok
JJ Quilfish (25 days ago)
Note to self...never go in a T shaped tail plane.😱😱🇦🇺
Willard Leap (25 days ago)
Cool video
Scott Samber (26 days ago)
I think the only reason why this video got so many thumbs down is that a lot of the comparisons given sounded Grimm and scary for the average viewer.
Berk Alper (26 days ago)
Great informative video, only thing to add in terms of maximum handling characteristics is that due to where the engine mass is located (wide but near middle of plane forunder-wing mounts, and close together but towards the rear for rear mounted engines) planes with under wing mounted engines should be more responsive and maintain better control in pitch, while it should be easier to roll a rear-mounted engine plane if all other plane characteristics are equal.
butchtropic (26 days ago)
Probably slightly less chance of bird ingestion as well, also a "clean wing" means slats/flaps will work that much better.
Lt. Frank Drebin (26 days ago)
Gravel and shit? Captain, I'll buy you a beer for that one!
HelloMeitsMeAgain (26 days ago)
FOD = Fecal Object Damage
Raymond J (27 days ago)
that bridge is called galluping gerdy lol
SGT Andy MP Corp (27 days ago)
Just a thought. If the plane has the rear mounted engines would that make is easier to manage a water landing if that situation came up? I was curious because I was watching a video about the miracle on the Hudson landing where CPT Sully landed the plane in the Hudson River. They mentioned in the video that CPT Sully had to hit the water at a specific angel to ensure the engines didn't hit the water causing the aircraft to nose dive into the water is what I think they said. He obviously did an excellent job landing that plan to ensure everyone survived. I assume if the engines were situated in the back of the plane higher up they would not have to worry about them hitting the water as in the mentioned scenario. Is this a good assumption?
Михаил Ромадин (27 days ago)
Could you describe advantages/disadvantages of high mounted engines on high mounted wing & T tail - examples Boeing YC-14 and soviet/ukraine manufactured An72 / An74, please?
Cooltone Hip (28 days ago)
Good stuff man! Thanks!!
Pat Uelmen Huey (28 days ago)
Very interesting and clearly presented. Thanks so much for creating this video!
Professor B (28 days ago)
So much quality info I feel like I'm a pilot now when I board next week I will let the stewardess know there is a qualified passenger aboard if a problem occurs.
ALP TEMİZEL (29 days ago)
You are talking realy understandeble I want a flight teacher ilke you in Ayjet Turkey
Zach Billings (29 days ago)
The sound point didn't make sense to me. Rear-mounted engines have their exhaust behind the cabin area and are much quieter to the passengers.
Gregory Dahl (29 days ago)
If you put the engines on the tail , you could shorten the gear and load heavy cargo
Mike DeMarco (30 days ago)
I used to love sitting in the back row of the DC9 on takeoff . . . An ear filling, droning noise like no other.
ChemicBob (1 month ago)
okay?
James Berlo (1 month ago)
When you showed the video of the stall I cant believe how dramatic the inputs were the Pilots had to make in order to correct it, Fucking scary!!
Bryan Underhill (1 month ago)
One reason business jets have engines mounted to the tailcone is that the wing is too close to the ground. The HondaJet is interesting in that it placed the engines above the wing.
Marx Mann (1 month ago)
I really love your videos really had to subscribed to your channel,there is a show call seconds from disaster where they show that engines in the back is better than on the wings in case the aircraft have to land on water in an emergency
LYES BOUDECHICHE (1 month ago)
Weird, I'm a surgeon and I seem to be too interesyedin aviation watching yours videos
donito pepot (1 month ago)
how much does it cost to be a pilot? is there a certain age required to be a commercial pilot?
Radomír Frkous (1 month ago)
Hi there, nice vlog mate. Got me thinking though. Can you feel different response from the steering in the cabin while being low on fuel in comparison to have full tank? Do the wings flex differently in these states? Does it actually have any implication on a lift off as well (while getting off the ground)?
Denis Dooley (1 month ago)
The original Tacoma Narrows Bridge, nicknamed "Galloping Gertie".
H F (1 month ago)
Didn’t realise T tail craft are more susceptible to super stall. It explains a lot especially looking back on past accidents . Good video !
Eric Rogers (1 month ago)
Gravel and shit (a technical term?) Lol.
Eric Rogers (1 month ago)
Are u Dutch? I tbink yes or maybe German.
RumikoOne (1 month ago)
This was interesting as hell
TRICK-OR TREAT (1 month ago)
OUUUUUuuuu THAT'S NOT GOOD !
Kerlem (27 days ago)
Masterful understatement.
Rodric King (1 month ago)
I love this... More, more, more, please.... Thank you!
José Freire (1 month ago)
The link does not work...
Oh Asis (1 month ago)
Interesting, thanks.
Jeroen Jansen (1 month ago)
Very informative
John Frazer (1 month ago)
They're under the wings so that as passengers board, they can toss a handful of coins into the inlet, for luck. Why are engines above the trailing edge or aft fuselage so much harder to maintain, on low landing gear, than engines placed down low so they can ingest all the ground debris? As often as you need to service low mounted engines, it's easier to just roll a scaffolding under them? Really?
Tygran Amalyan (1 month ago)
Great video! Please kindly explain about turbulence and how dangerous it is and how the passengers have to deal with it?
Red Ensign (1 month ago)
believe it or not, I watched this because I play kerbal space program
Angelo Gabriel (1 month ago)
Nice video ,
TalenGryphon (1 month ago)
Thank you for this video! I have wondered about this before. Particularly when stuck in the last row of an MD-80 with an engine screeching at me like an unruly child jusy outside my window. From Seattle to Dallas x.x
DRHJR DRHJR (1 month ago)
Excellent video. The explanation of physics with the experience of piloting is so much better than either one alone. Thank you.
Dionisis Malapetsas (1 month ago)
Hello Captain. Greetings from Greece. I would like to ask you if this stick pusher system is also on a Bombardier Dash-8 Q400 which is also a T-tail aircraft, even it has the propeller engines under the wings. Thanks in advance. Dionisis
Leopold Tintera (1 month ago)
Ever thought about teaming up with Captain Joe?
Shel TR (1 month ago)
Strange: You didn't compare the efficiency differences between wing-mounted engines pulling the aircraft vs rear-mounted engines pushing it...
Greg Peebles (1 month ago)
love your vids most of the stuff I know, but it gives the average Joe(someone like me) some insight about design and engineering. I will be watching more, have you ever piloted or worked on a Jet star built in the late 50s early 60s I think(one of the first small jets, 4 engines tail mount). . One of the first planes I worked on  it seemed so cool.
DEVUNK88 (1 month ago)
that was very informative, thanks man!
Brendan (1 month ago)
Ilyushin IL-62M
Brendan (1 month ago)
😍
Catcrumbs (1 month ago)
Where is the footage at 12:12 from?
Clinton Andrews (1 month ago)
Captain, you are an outstanding teacher! Your explanations are clear and thorough and understandable even by someone with no ground school. Bravo! I wonder if you could take a moment to explain the concept of a 'critical engine' on a propeller powered airplane. I was told by a pilot that having twin engines is no guarantee of redundance if the critical engine fails. By my reckoning, the thought that having two engines is no better than having just one is counter-intuitive and worthy of your time to explain. (It is also one of the more complex concepts to try and explain.) I have faith that you can do it! Best wishes!
georgysb (1 month ago)
U spell word "engine(s)" wrong. It appears Cambly didn't much help u+)
MotoMarios (1 month ago)
I loved the stick pusher info on T-tailed planes. Made me remember that even the F-104 fighter (a t-tailed plane) also had a stick pusher.
Malik Abrar Hussain (1 month ago)
Good video. Useful info. Plz add a video on dep and approach briefing if convenient
IDontHaveAVideo (1 month ago)
Another benefit to having wing mounted engines has to do with doing engine changes. In a wing mounted engine aircraft, any spare engine of that type will fit in the number 1 or number 2 position because the mounts and wiring harnesses are the same. In a rear fuselage mounted engine aircraft, the spare engines have to be designated for number 1 or number 2 positions. Thus you should always have 2 spare engines readily available. Otherwise, maintenance will have to do an engine “position change” service on the engine prior to installing it on the opposite side.
Thilak Subasinghe (1 month ago)
thank you for sharing your knowledge with others
Chris Cappy (1 month ago)
Can you do a video a turbo props and the different pitch settings used during take off and regular flight?
Chris Cappy (1 month ago)
on turbo props**