I watched these videos when I was a little kid interested in airplanes, now 5 years later I come back here for my study in Aerospace Engineering. You really shaped who I've become and I'm so grateful that you made these video's. Much love
A layperson like me, who has little knowledge about aviation is practically dragged into your channel. It is interesting and throwing more information has really made me an enthusiast in aviation. I would love to watch your channel more and more and of course, thank you.
Winglets are also much safer. Some of the vortices created by heavy and slow aircraft can be extremely powerful and even push other planes out of the sky (if they happen to be in the path of the vortex). Winglets help greatly reduce the vortex (as Mentour said), by giving a place for the high pressure and low pressure air to meet gradually (instead of a big column of high pressure air twisting over the edge of the wing as it tries to fill the low pressure area). The recent Qantas incident from last week in LA resulted because the plane was hit by the wake vortex from the taking off aircraft ahead of them. Aside from that, there have been many accidents attributed to wind vortices, both big and small aircraft.
Hi ! Sir •You are my inspiration ur voice and way to explain is unbeatable I like ur videos. •Just a question, Q How Many flight does pilot have to operate in 1week ? •Thanks sir
To explain wingtip vortices (in very simple terms), the air is moving faster over the top of the wing than the bottom due to the top being longer than the bottom and the wing is designed so the air meets up at the back of the wing. On a swept wing the air moves down the wing (or outward) as well as across it and at the end of the wing the faster upper air meets the slower lower air and it spins into a vortex. It takes a lot of energy to spin the air in the vortices, that energy has to come from somewhere and the only place that can be is from the plane, and that creates drag. Drag slows the plane down requiring the engines to work harder using more fuel. The winglets change the way the fast upper air meets the slow lower air so that the wing-tip vortices are greatly reduced. There is no one best design for this, the wing for each model of plane is different and the best design for each wing varies. The efficiency of the winglets changes as the air-speed of the aircraft changes. The design of the winglet determines where the winglet is most efficient and that choice varies depending on the roll the plane is planned for. Short hoppers will be better served by winglets the are most effective during takeoff and climb (and landing), long haul aircraft will best be served by winglets that are most effective at altitude and cruise. This is the exact opposite of a "one sized fits all" situation. Not mentioned in the video is the 787 wing is designed to flex a lot more than typical aircraft wings, the shape (curve) of the wing itself works to reduce wing-tip vortices without winglets.
When I was an undergraduate at Rochester Inst of Technology, there was a mini wind tunnel in the lab and we did some experiments on these winglets. That was in late 1980s. It was fun doing these experiments on different types of winglets.
Thank you! Your delivery content and enthusiasm in your presentation is very commendable. You present a very complexed topic (winglets) to a level for novice to advanced learners to understand. You are a very skilled and knowledgeable teacher.
Boeing can't even develop a replacement for the outdated 737 which has been pushed way past its design life, with disastrous and tragic consequences. They should put their efforts into building a safe aircraft before they attempt to do anything ground breaking.
Parasite drag is produced by VERTICAL surfaces and Induced drag is created by HORIZONTAL surfaces, for example when the Flaps are at 0 degrees they produce Max Induced drag and Min Parasite drag, at 90 degrees Min Induced and Max Parasite drag and at 45 degrees in the middle of both, for a flap with no thickness. The fact that Lift and drag are both proportional to airspeed squared, means airspeed affects a 2 Dimensional surface, geometrically a Square plane. Wing Vortices are not the cause of Induced Drag but it is just a Visible Effect of it. I have developed a hypothesis to explain physical, atomic and subatomic (gravitational movements, Center of Gravity and Mass), however I need to validate my V & H surfaces theory first. It seems that Winglets reduce Lift and increase Drag, I also believe in turbance Winglets impose additional stress to wings and all other moving parts inside the wings like rods, joints and moving surfaces. Wingtips also decrease the stability and controllability in turbulent air. Simply put another british scam. Please let me know what you think, thanks.
when I was a youth, I remember reading in the 70's an article in Popular Science... about these new winglets that were going to be on EVERY plane...we;;, here we are!
Dear Mentor Pilot, Wow! Here is an interesting fact for your books. I live on Mercer Island which is which is a stone's throw from downtown Seattle Washington. My son Robby Sotelo was and is a very close friend of the grandson who created the winglet. His grandfather tried in vain to convince anyone who would listen to put winglets on wings, but it all fell on deaf ears. So he patented it, and now every winglet you see in the world, he gets a cut of the profits. I also live on Mercer Island, and though I'm from the bicycle industry, my son and I are airplane nuts and your RUclips videos are the best. Sincerely Dan Sotelo AKA Mr. onZa
I signed up for Brilliant via your link Sir! Great resource! Live the videos! Too late for me to fly commercial at your level, but perhaps a couple notches down the complexity scale.. Love the math and physics link to help me on my way!
Oh my gosh the winglets are ginormous!!! Went on a 737 before and from the window it looks quite small. Also, btw, this was a great video. Keep up the good work!
I had no idea winglets were that tall. BTW, love all of your video's. I love commercial aircraft and you've answered a lot of different questions. Thanks!!!
They are 6 feet on the 744. The 747-8 has raked tips. However, the 767-300ER has 11 foot winglets! They're huge. (Heights according to wikipedia, however I work around both aircraft)
7.3 IDI Diesel sharklet is on Airbus and they are taller. here are some stats: at 2.5-metres tall, they will replace the aircraft's current wingtip fence. presented as an option on newly built aircraft, Sharklets have been especially designed for the Airbus A320 family to reduce fuel burn by 3.5 percent. question 2: there are 4 phases to landing: final approach, flare, touchdown and de-rotation, roll out and deceleration. on the A320, the auto brakes have three settings. LO, MED and MAX. autobrakes are available on Normal Brakes (Green system) only. LO mode delays for 4 seconds after touchdown. MED mode delays for 2 seconds. MAX has no delay and is only used during takeoff in the event a rejected takeoff is perforned, it applies max pressure with no delay
The auto brake is operated by a switch mounted in the center of the top panel above the flying instruments. Its graduated from 1, 2, 3, 4, and 5, If its a five, you pull the switch out towards you and then lock it into 5. 5 is very rarely used unless its a bloody short field and you need maximum braking. Use of reverse thrust is always used no matter how long the runway is . Thats to save in brake pad wear and tear. Hope that explains the use of the Auto Brake system
Very insteresting explanation, answering some questions bothering me for a very long time; when I was a child in the 60s it was natural for my siblings and I to make paper-airplanes, our goal was to make them fly as far as possible, so we started bending the tip of the wings, we discoverd these wing-tips added stability to these paper-planes, letting them to fly in straight line easier and reaching long distances, when I notice the industry introducing wing tip in the 70s I was amused, but until today I did not know the reasons, thanks for your video, I love them.
Thank you, Mentour Pilot, that was wonderfully explained. I imagined the height of the sharklet to be 50% taller than your height. I think I got it pretty close.
It's a runway for radio controlled model aircraft not far from where he lives. My local club only has a grassy field, and even one airfield is not paved. They must have lots of enthusiasts!
Love this series, I watch it all the time, very informative. Now, aside from winglets, how do pilots manage power settings and fuel consumption in-flight as the aircraft gets lighter due to fuel consumption?
Got to be worse with double winglets. I recently talked with an old friend who has retired as a commercial pilot and asked about cross-wind landings. He said he just side slipped. Before he left engineering to be a pilot I took a short ride (instead of a drive) to Lindbergh Field. He did an extreme side slip and we landed in a parking area next to the then Ryan complex.
Hey Mentour, you have uploaded this video in a perfect time for me. In about one week I need to finish my scientific school work which is exactly about Winglets of course. Your video has given me some last little things I can bring in my around 15 page scientific work. Therefor thanks a lot for your help and I hope you read this Greetings Florian
Pablo Lapadjian I can answer your question. Basically before the all technology the third person on the cockpit ( the navigator)707 and 727. Was responsible for navigation, and on the olds times during night we flew looking for out side the windows too, looking for Stars. The time passed but they continus be done with this windows.
Primarily because the original 737 shared lots of fuselage components with the 707 and 727. The cross section was the same and it meant they could use common components such as seats and other fixtures and fittings. If you look at a Boeing 707, 727 or (early) 737 the forward fuselage is basically the same.
Thanks for covering this subject ! Having lived near airports my entire life I've noticed the changes in aircraft design, and wondered why jets were all of a sudden sporting upturned wing tips. You answered my question quite well and in a simple manner. Thank You. PS- my guess for the winglet height was 1.5 to 2 of your body height. I'm glad to see my estimation was pretty accurate
Something else i noticed since the advent of winglet tips, that may or may not be related: i find flights are much smoother than before and i don't get motion sickness any more. I used to hate flying in B707, DC8, 747 and tri-jets.
Nice job on inserting the winglet over the video picture you were in and getting the scale right. I guess you just had to know its height and your own and then just guesstimate it fractionally while scaling it in over your own frame, huh?
As far as I'm aware, the eyebrow windows were for astral navigation which obviously isn't a thing that's needed with all the advanced in technology like GPS and many other things since the '60s. I believe it reduces production cost, maintenance cost, and a bit of weight.
Pretty much. I don't think navigators are really used anymore, except in situations like certain military aircraft, like bombing runs and AWACS and stuff like that. Advances and simplifications in flight controls and the number of things that can run themselves is also why modern aircraft have lost the engineer.
Be care full while on runway mentour a really useful log ." I have a question about how will you recognize the other planes flying parallel with you ?"
You generally have two ways: Via TCAS radar or, Visually by looking at the plane lights you can more or less know where it's heading by the colors you see.
Way back in 1983/84, I was working on "Temperature Dependant Shape Changing Materials" at Cambridge University Dept. of Metallurgy. There were fatigue problems with Shape Memory Alloys, that could be solved, but introduced corrosion issues. The problem with 'Bi-Metal' strip material was low performance and/or corrosion. CIBA GEIGY had a fabulous facility at Duxford, very close to the Aircraft Museum. Composite materials looked very promising. Zinc for example has a very high coefficient of expansion. It was noticed that a bi-metal strip could double it's turning moment at a given temperature, when the interface was a sinusoidal wave profile. ...This in turn quadrupled the torque or turning force. Weight issues could be addressed by a CIBA GEIGY product known as "Pultrusions" ... semi-cured composite epoxy impregnated and gas free extrusions. ...It was simple enough to incorporate heating wires into the 'wave' profile. ... The intention of "Active Wing-Tips" was to allow the aircraft to minimise the formation of wing-tip vortex initiation. ...Rather than have a single thick section, a sliding laminated stack was seen as advantageous. ... I was also reading Comparative Theology, as a Military Chaplain, and the issue of Life-form Patents was very contentious. There was a movement to boycott all Patent Protection as a form of protest. A "Publish and be damned" policy. ...The result was that no funding was available for continued research.
Great channel. Question. What are those "pods"that are hanging under the main wings. Hope that isn't a stupid question. If you have addressed this question, please tell me the name of the video. Thanks for the interesting content. Safe flying!!!
upwind is the direction you take off, because airplane always takes off against wind, thats why the name is upwind. crosswind is when you have the runway 45 degrees to your left or right, and downwind is when your are flying opposite the runway you toke off from. you will learn this better when you do pattern training
Crosswind - Flying in a direction where the wind is blowing accross the plane. Downwind - Flying in a direction where the wind is blowing in the same direction of travel. Upwind - Flying in a direction where the wind is blowing in the opposite direction to the planes travel (headwind). Terms mostly used when flying circuits as you always land upwind to get the most lift for a stabalized approach...same applies for take off. If you took off from a runway to do a circuit you would take off Upwind, turn crosswind, turn downwind, turn base then turn final (upwind again) to land.
Haha I figured that you weren’t on a green screen when I saw the wind moving your shirt and tie, but how are you out there? Do you do videos when an airport is closed?
I understand that depending on the relative sizes of planes on take-off a distance must be kept between them to prevent the vortex created created by the first affecting the following plane. Do the winglets reduce the vortexes sufficiently to permit the required distance to be reduced?
The 777X has foldable wingtips. The reason the wingtips will fold is because the wingspan will be 7 meters (22 feet bigger). The reason for the fold is for the aircraft to fit in the same slot as current 777s, therefore airports don't need to expand like they did for the A380
Does it also prevent vortices from pulling the air above the wing (outer section) spanwise which could result in wing stalls at lower speds like landing?
I read up Petter's (Mentour Pilot's) interview somewhere, besides happened to check his short bio on Linkedin or some-place. He says he has been flying for over thirteen years and even prior to that was in the technical support function. [now too he is an instructor and trainer with ____ his company]. *+Marvin Blankinchip* what i was implying was that the question from OP (Kim Jong Un) was naive. This is the age of technology, social media. Mentour Pilot (in that interview i read) did mention how he is nurturing this initiative (the site/app and these podcasts) as a *digital entrepreneur* so the answer is 'both'.. for the passion of teaching/ educating as also to fund the initiative (make money).
Just want to ask: are you looking forward to your meeting with president Trump next month? What are you going to bring as a present for the president? Luv ya Kim!
Captain, only a private pilot and too old to make a living flying, but loving your videos. I'm curious why some airlines are retrofitting winglets now? For example, Air Canada Rouge is doing so on their 767's but not on the mainline Air Canada ones. I'm presuming it has to do with newer materials making the winglets worthwhile but only on longer ranges which is what I believe Rouge typically does?
Hi Captain Petter, what an awesome channel you have. It has really helped me learn so much about aviation. Thank you for the great content. To be honest, I thought the Boeing 737 winglet to be a bit shorter, maybe about 5 to 6 inches shorter than you. Thank you.
Eagle wingtips also have gaps between the feathers (making them look kinda like fingers). Is there any aerodynamic advantage to that, as opposed to having a continuous / solid wingtip edge? Could or should that structure also be mimed in aircraft wingtips?
The first winglets were proposed by Fred Lanchester roughly a hundred years ago, but sat unnoticed. My dad was Fred's last protégé between 1946 and his death, so when it was discovered Fred had studiously avoided the camera, painted his portrait from memory. Dad then went on to design Concorde's variable nascelles, as the sound wave kept causing engine flameouts. And much more, but this is about aviation. Other photos have been discovered since, Fred doing a Where's Waldo in the background.
I watched these videos when I was a little kid interested in airplanes, now 5 years later I come back here for my study in Aerospace Engineering.
You really shaped who I've become and I'm so grateful that you made these video's. Much love
A layperson like me, who has little knowledge about aviation is practically dragged into your channel. It is interesting and throwing more information has really made me an enthusiast in aviation. I would love to watch your channel more and more and of course, thank you.
"To prove this is not a green screen I'm going to run into the distance" I belly laughed, thank you lol
Best part of the whole video… he flies away and everything! 🙃
that was cute haha
Loved that. And it really did look like a green screen.
Winglets are also much safer. Some of the vortices created by heavy and slow aircraft can be extremely powerful and even push other planes out of the sky (if they happen to be in the path of the vortex). Winglets help greatly reduce the vortex (as Mentour said), by giving a place for the high pressure and low pressure air to meet gradually (instead of a big column of high pressure air twisting over the edge of the wing as it tries to fill the low pressure area).
The recent Qantas incident from last week in LA resulted because the plane was hit by the wake vortex from the taking off aircraft ahead of them. Aside from that, there have been many accidents attributed to wind vortices, both big and small aircraft.
I love these vids: makes understanding technical flight things easy to understand and very enjoyable.
Perfect! I am happy you like them!
Winglets also provide more places for airlines to stick their logo.
TonyP0927 and more room to hold on to if delta gave away your seats to standbys right in front of you while you hold the ticket in your hand.
GoodDay Wow.
I actually like that.
Howdy
Very idiotic
Hi ! Sir
•You are my inspiration ur voice and
way to explain is unbeatable I like ur videos.
•Just a question,
Q How Many flight does pilot have to operate in 1week ?
•Thanks sir
Hi!
Thank you!
That depends on what type of operation you fly. Anything from 2 to 20
To explain wingtip vortices (in very simple terms), the air is moving faster over the top of the wing than the bottom due to the top being longer than the bottom and the wing is designed so the air meets up at the back of the wing. On a swept wing the air moves down the wing (or outward) as well as across it and at the end of the wing the faster upper air meets the slower lower air and it spins into a vortex.
It takes a lot of energy to spin the air in the vortices, that energy has to come from somewhere and the only place that can be is from the plane, and that creates drag. Drag slows the plane down requiring the engines to work harder using more fuel.
The winglets change the way the fast upper air meets the slow lower air so that the wing-tip vortices are greatly reduced. There is no one best design for this, the wing for each model of plane is different and the best design for each wing varies.
The efficiency of the winglets changes as the air-speed of the aircraft changes. The design of the winglet determines where the winglet is most efficient and that choice varies depending on the roll the plane is planned for. Short hoppers will be better served by winglets the are most effective during takeoff and climb (and landing), long haul aircraft will best be served by winglets that are most effective at altitude and cruise. This is the exact opposite of a "one sized fits all" situation.
Not mentioned in the video is the 787 wing is designed to flex a lot more than typical aircraft wings, the shape (curve) of the wing itself works to reduce wing-tip vortices without winglets.
Thnx, enjoyed that little book! 👍
When I was an undergraduate at Rochester Inst of Technology, there was a mini wind tunnel in the lab and we did some experiments on these winglets. That was in late 1980s. It was fun doing these experiments on different types of winglets.
“Nature has a tendency to do things in the most efficient way”
*Expect the next Boeing to have flapping wings.*
*Starts praying
Well airbus started testing something near that
Thank you! Your delivery content and enthusiasm in your presentation is very commendable. You present a very complexed topic (winglets) to a level for novice to advanced learners to understand. You are a very skilled and knowledgeable teacher.
Boeing can't even develop a replacement for the outdated 737 which has been pushed way past its design life, with disastrous and tragic consequences. They should put their efforts into building a safe aircraft before they attempt to do anything ground breaking.
Parasite drag is produced by VERTICAL surfaces and Induced drag is created by HORIZONTAL surfaces, for example when the Flaps are at 0 degrees they produce Max Induced drag and Min Parasite drag, at 90 degrees Min Induced and Max Parasite drag and at 45 degrees in the middle of both, for a flap with no thickness. The fact that Lift and drag are both proportional to airspeed squared, means airspeed affects a 2 Dimensional surface, geometrically a Square plane. Wing Vortices are not the cause of Induced Drag but it is just a Visible Effect of it. I have developed a hypothesis to explain physical, atomic and subatomic (gravitational movements, Center of Gravity and Mass), however I need to validate my V & H surfaces theory first.
It seems that Winglets reduce Lift and increase Drag, I also believe in turbance Winglets impose additional stress to wings and all other moving parts inside the wings like rods, joints and moving surfaces. Wingtips also decrease the stability and controllability in turbulent air. Simply put another british scam.
Please let me know what you think, thanks.
when I was a youth, I remember reading in the 70's an article in Popular Science... about these new winglets that were going to be on EVERY plane...we;;, here we are!
They are waaaay bigger than I thought. Cool videos my friend. Just downloaded your app. Keep up the good work! Cheers from Greece and Amsterdam!
Dear Mentor Pilot,
Wow! Here is an interesting fact for your books. I live on Mercer Island which is which is a stone's throw from downtown Seattle Washington. My son Robby Sotelo was and is a very close friend of the grandson who created the winglet.
His grandfather tried in vain to convince anyone who would listen to put winglets on wings, but it all fell on deaf ears. So he patented it, and now every winglet you see in the world, he gets a cut of the profits.
I also live on Mercer Island, and though I'm from the bicycle industry, my son and I are airplane nuts and your RUclips videos are the best.
Sincerely
Dan Sotelo
AKA Mr. onZa
Wow! That’s really cool to hear. Thank you for following the channel and send my best regards to your son’s friends, grandpa!
I signed up for Brilliant via your link Sir!
Great resource!
Live the videos!
Too late for me to fly commercial at your level, but perhaps a couple notches down the complexity scale..
Love the math and physics link to help me on my way!
Oh my gosh the winglets are ginormous!!! Went on a 737 before and from the window it looks quite small. Also, btw, this was a great video. Keep up the good work!
I had no idea winglets were that tall. BTW, love all of your video's. I love commercial aircraft and you've answered a lot of different questions. Thanks!!!
Happy to hear that you find the beneficial!
Damn those winglets are huge!
Yes they are!
How tall are the winglets on a 747 then? 4 meters?
They are 6 feet on the 744. The 747-8 has raked tips. However, the 767-300ER has 11 foot winglets! They're huge. (Heights according to wikipedia, however I work around both aircraft)
tell me about it
They look huge if they are right outside of the window.
Good video. I always thought the 737 sharklet was much smaller. Could you do a video on the auto break?
7.3 IDI Diesel sharklet is on Airbus and they are taller. here are some stats: at 2.5-metres tall, they will replace the aircraft's current wingtip fence. presented as an option on newly built aircraft, Sharklets have been especially designed for the Airbus A320 family to reduce fuel burn by 3.5 percent. question 2:
there are 4 phases to landing:
final approach, flare, touchdown and de-rotation, roll out and deceleration. on the A320, the auto brakes have three settings. LO, MED and MAX. autobrakes are available on Normal Brakes (Green system) only. LO mode delays for 4 seconds after touchdown. MED mode delays for 2 seconds. MAX has no delay and is only used during takeoff in the event a rejected takeoff is perforned, it applies max pressure with no delay
The auto brake is operated by a switch mounted in the center of the top panel above the flying instruments. Its graduated from 1, 2, 3, 4, and 5, If its a five, you pull the switch out towards you and then lock it into 5. 5 is very rarely used unless its a bloody short field and you need maximum braking. Use of reverse thrust is always used no matter how long the runway is . Thats to save in brake pad wear and tear. Hope that explains the use of the Auto Brake system
Very insteresting explanation, answering some questions bothering me for a very long time; when I was a child in the 60s it was natural for my siblings and I to make paper-airplanes, our goal was to make them fly as far as possible, so we started bending the tip of the wings, we discoverd these wing-tips added stability to these paper-planes, letting them to fly in straight line easier and reaching long distances, when I notice the industry introducing wing tip in the 70s I was amused, but until today I did not know the reasons, thanks for your video, I love them.
Excellent, I really liked this video, for all the technical details you provide.
God Speed.
Thank you, Mentour Pilot, that was wonderfully explained. I imagined the height of the sharklet to be 50% taller than your height. I think I got it pretty close.
Yep, that’s pretty spot on
Mentors pilot you are my fav youtuber
Great video Mentour as usual. Like that runway background!
It's a runway for radio controlled model aircraft not far from where he lives. My local club only has a grassy field, and even one airfield is not paved. They must have lots of enthusiasts!
I love your videos! I'm very interested in aviation and I'd like to know how much pilots rely on the autopilot systems. Thanks!
@mentourpilot, 7:25 I think you mean longer maintenance intervals? Or extended servicing latitudes?
Love this series, I watch it all the time, very informative. Now, aside from winglets, how do pilots manage power settings and fuel consumption in-flight as the aircraft gets lighter due to fuel consumption?
Hi mentour pilot, is there any difficulty by winglets while cross wind landing ?
Excellent question. We actually have slightly less crossword Nd capability with the Winglets than without.
Got to be worse with double winglets. I recently talked with an old friend who has retired as a commercial pilot and asked about cross-wind landings. He said he just side slipped. Before he left engineering to be a pilot I took a short ride (instead of a drive) to Lindbergh Field. He did an extreme side slip and we landed in a parking area next to the then Ryan complex.
Hey Mentour,
you have uploaded this video in a perfect time for me. In about one week I need to finish my scientific school work
which is exactly about Winglets of course. Your video has given me some last little things I can bring in my around 15 page
scientific work.
Therefor thanks a lot for your help and I hope you read this
Greetings Florian
Hi Mentour! I have one question, why the older 737 models have more cockpit windows than the modern ones?
Pablo Lapadjian I can answer your question. Basically before the all technology the third person on the cockpit ( the navigator)707 and 727. Was responsible for navigation, and on the olds times during night we flew looking for out side the windows too, looking for Stars. The time passed but they continus be done with this windows.
They're called eyebrow windows, they also gave pilots greater visibility in turns.
Primarily because the original 737 shared lots of fuselage components with the 707 and 727. The cross section was the same and it meant they could use common components such as seats and other fixtures and fittings. If you look at a Boeing 707, 727 or (early) 737 the forward fuselage is basically the same.
Mentour has a video on that specific topic. The "eyebrow" windows turned out to have more downsides than benefits, and were dropped from later models.
i love the end when he said is wasn't a green screen because I thought it was also till I seen the shadow from the camera on another episode
Thanks for covering this subject ! Having lived near airports my entire life I've noticed the changes in aircraft design, and wondered why jets were all of a sudden sporting upturned wing tips. You answered my question quite well and in a simple manner. Thank You.
PS- my guess for the winglet height was 1.5 to 2 of your body height. I'm glad to see my estimation was pretty accurate
Love your videos man
I was so wrong......Great video! Thanks for taking the time to do these awesome videos.
Cool! I’m glad you liked it. Almost everyone underestimate the size of these things.
hi mentour pilot. on the boeing 737 each winglet is 8 feet long and 4 feet at the base narrowing about 2 feet at the tips and is reduce drag
Just to be picky, they reduce INDUCED drag which increases by the square of the speed increase.
Something else i noticed since the advent of winglet tips, that may or may not be related: i find flights are much smoother than before and i don't get motion sickness any more. I used to hate flying in B707, DC8, 747 and tri-jets.
Dang! All this time, I thought it was a seamless greenscreen. :) Thanks for covering this interesting component.
Nice job on inserting the winglet over the video picture you were in and getting the scale right. I guess you just had to know its height and your own and then just guesstimate it fractionally while scaling it in over your own frame, huh?
I always wanted to know what winglets were for!! Thanks for posting:)
Wow, shocking on how wrong I was with the size. Almost dbl what I thought. Great video
Sir can u tell me that why cargo aircrafts dont have any winglets and why they have T tail ??
Excellent video. You explain those wiglets' benefits so well. Thank you
Mentour some 737's have windows near the overhead panel why are they there and why are they not there on other versions of 737 and other aircrafts
The eye-brow Windows? I will see what I can do.
Mentour Pilot Thanks
As far as I'm aware, the eyebrow windows were for astral navigation which obviously isn't a thing that's needed with all the advanced in technology like GPS and many other things since the '60s. I believe it reduces production cost, maintenance cost, and a bit of weight.
So is all the added technology and computers why flight crews don’t include navigators anymore - or do some planes still have them?
Pretty much. I don't think navigators are really used anymore, except in situations like certain military aircraft, like bombing runs and AWACS and stuff like that. Advances and simplifications in flight controls and the number of things that can run themselves is also why modern aircraft have lost the engineer.
That typical Aviation enthusiast run at the end tho 😂
That is how I sometimes run!!
Captin bob cool
Yeah that was pretty funny
Best ending *ever!*
@@tanmaypalkar9861.?0m
Be care full while on runway mentour a really useful log ." I have a question about how will you recognize the other planes flying parallel with you ?"
I am careful :)
:)
You generally have two ways:
Via TCAS radar or,
Visually by looking at the plane lights you can more or less know where it's heading by the colors you see.
It is his RC runway next to his house
Way back in 1983/84, I was working on "Temperature Dependant Shape Changing Materials" at Cambridge University Dept. of Metallurgy. There were fatigue problems with Shape Memory Alloys, that could be solved, but introduced corrosion issues. The problem with 'Bi-Metal' strip material was low performance and/or corrosion. CIBA GEIGY had a fabulous facility at Duxford, very close to the Aircraft Museum. Composite materials looked very promising. Zinc for example has a very high coefficient of expansion. It was noticed that a bi-metal strip could double it's turning moment at a given temperature, when the interface was a sinusoidal wave profile. ...This in turn quadrupled the torque or turning force. Weight issues could be addressed by a CIBA GEIGY product known as "Pultrusions" ... semi-cured composite epoxy impregnated and gas free extrusions. ...It was simple enough to incorporate heating wires into the 'wave' profile. ... The intention of "Active Wing-Tips" was to allow the aircraft to minimise the formation of wing-tip vortex initiation. ...Rather than have a single thick section, a sliding laminated stack was seen as advantageous. ... I was also reading Comparative Theology, as a Military Chaplain, and the issue of Life-form Patents was very contentious. There was a movement to boycott all Patent Protection as a form of protest. A "Publish and be damned" policy. ...The result was that no funding was available for continued research.
Wow! I thought they were shorter. Great explanation. I always enjoy and learn from your vids. Thanks a bunch
Great channel. Question. What are those "pods"that are hanging under the main wings. Hope that isn't a stupid question. If you have addressed this question, please tell me the name of the video. Thanks for the interesting content. Safe flying!!!
Great question. I will cover those in a separate video.
Why is 757 vortex a special problem?
They cover the flap actuators.
Always this legendary mini runway!😂
Sébastien Dobbelaere legendary hehehe
João Guilherme Braz !!!!!22
can u explain about crosswind, downwind & upwind
upwind is the direction you take off, because airplane always takes off against wind, thats why the name is upwind. crosswind is when you have the runway 45 degrees to your left or right, and downwind is when your are flying opposite the runway you toke off from. you will learn this better when you do pattern training
Crosswind - Flying in a direction where the wind is blowing accross the plane. Downwind - Flying in a direction where the wind is blowing in the same direction of travel. Upwind - Flying in a direction where the wind is blowing in the opposite direction to the planes travel (headwind). Terms mostly used when flying circuits as you always land upwind to get the most lift for a stabalized approach...same applies for take off. If you took off from a runway to do a circuit you would take off Upwind, turn crosswind, turn downwind, turn base then turn final (upwind again) to land.
Enjoy watching your "lessons" about aviation. Keep up the great work. Very helpful and informative.
Love your channel.
Great video matey! Keep it up
Thank you! I’m happy you liked it!
On Boeing 767 raked wingtips are only on 767-400 also raked wingtips are incorporated on the Boeing 777-300 only.
Cheers from San Francisco.
Yes, true.
Not really, they are also on the 777-200LR and also of the 777F
Hello, Thanks, I stand Corrected...
not 777-300 only 777-300ER
Elle, Thanks for the additional Update...
Cheers from San Francisco, My last job was a Fueler @ SFO.
Mentour: Makes a video about winglets
Intro: *Uses a Boeing 777*
Samuel's Simulations hahahhaha
is there back-up on a jumbo when there is not any verbal, computer hight indication given on touch down owing to the hight of the cockpit.
Haha I figured that you weren’t on a green screen when I saw the wind moving your shirt and tie, but how are you out there? Do you do videos when an airport is closed?
It’s a small RC airport close to my house. 😊
Mentour Pilot Ah I see!
~~it’s a zebra crossing on an otherwise unmarked road
Mentour Pilot wi was going to say your just lucky and not getting hit but I prefere what you said
Ok mentour pilot! I thought you are in a real port
10:27 this cracked me up so much!
It wasn't even necessary because we could see his trousers blowing in the wind. But thanks for the laugh anyway!
I've been waiting since 1974 to see winglets on commercial craft.
Can you tell me in which stage of flight is a winglet most effective, takeoff landing or cruize?
Explains aircraft parts very enjoyable and informative . Now I know what the function of winglets are!!!!!
Great video
Just l can thank you very much for my knowledge
I think the 737 winglet is equal to your height!!
Great! Check out the full video!
Mentour Pilot wow!! I thought it's gonna be a bit larger but its much bigger!!!
I think it's serves for like for saving gas and it's around your hight
Winglets are 10ft high.
Ditto.
I understand that depending on the relative sizes of planes on take-off a distance must be kept between them to prevent the vortex created created by the first affecting the following plane. Do the winglets reduce the vortexes sufficiently to permit the required distance to be reduced?
Thanks for the explanation.
The 737 winglets are about from the ground to your pockets?
That would be incredibly low
each is 8 foot tall
Small size!
That is higher than me
I am 2 feet
I was wondering why the 777-300ER does not have the winglets? It is an extremely long range flying aircraft.
The 777 doesn't have winglets because they use the raked wing tips. Just like the 787, it's more efficient with longhaul flights
And the wings it is totally different, so much more efficient
The 777 X has foldable winglets
Yes, I know that. Isn't that nice!
The 777X has foldable wingtips. The reason the wingtips will fold is because the wingspan will be 7 meters (22 feet bigger). The reason for the fold is for the aircraft to fit in the same slot as current 777s, therefore airports don't need to expand like they did for the A380
It's a bit bigger than I thought, even when close to these planes they do not look that big!
bob4jjjj 1.70 meter's or 6 ft
bob4jjjj 737-800
João Guilherme Braz: Wow, they don't look that big when close to them. Thanks.
actually they are 2,10, 1,70m are of embraer 195. sorry
Does it also prevent vortices from pulling the air above the wing (outer section) spanwise which could result in wing stalls at lower speds like landing?
I know alot about planes and your videos give me more information. Thank You
You didn't takeoff after that run, did you?
I think he did. Maybe his arms are shaped like aerofoils? The problem would be how he would propel himself once he was in the air.
I can already tell you not at the green screen because of the wind😅
Great video!
His two dogs handling the fans off frame: "We fooled him, boss!"
35 thousand feet
That would be a big winglet
Mentour Pilot giant winglet!
Do winglets have a stabilizing effect like polyhedral wings or is it just about reducing drag?
Then actually Brunswick
Does it do anything to improve stability, reduce the effects of turbulence, for passenger comfort?
Winglet about 8ft
ian neil, you were supposed to guess.
8ft to 10ft
NASA Engineer Richard T. Whitcomb looks more like Pope Benedict's lost brother, or Senator Sheev Palpatine's lost cousin.
Winglets: Upp to your hipps? An interested layperson here. Thank you very much for your informative channel! Good education for passengers! 😊
I have a question mentour what is different btn winglets mechanism in the plane and when a plane flear before landing
And there I was thinking it was used for splitting birds in half for the plane following behind..... 😂
do you make money making this videos? or do you do this for educating future pilot?
I do it because it’s my passion but I do also make some money for the company I own. Most of that is to be used to improve my app.
Spock * ... So what are you trying to say? Mentor Pilot only used two sentences?
I read up Petter's (Mentour Pilot's) interview somewhere, besides happened to check his short bio on Linkedin or some-place.
He says he has been flying for over thirteen years and even prior to that was in the technical support function. [now too he is an instructor and trainer with ____ his company].
*+Marvin Blankinchip* what i was implying was that the question from OP (Kim Jong Un) was naive. This is the age of technology, social media.
Mentour Pilot (in that interview i read) did mention how he is nurturing this initiative (the site/app and these podcasts) as a *digital entrepreneur*
so the answer is 'both'.. for the passion of teaching/ educating as also to fund the initiative (make money).
Just want to ask: are you looking forward to your meeting with president Trump next month? What are you going to bring as a present for the president? Luv ya Kim!
He is doing to teach piolets from north korea.. kim................Kardashian
I'm going to guess they're roughly 4 meters tall, so roughly twice as tall as you
Captain, only a private pilot and too old to make a living flying, but loving your videos. I'm curious why some airlines are retrofitting winglets now? For example, Air Canada Rouge is doing so on their 767's but not on the mainline Air Canada ones. I'm presuming it has to do with newer materials making the winglets worthwhile but only on longer ranges which is what I believe Rouge typically does?
Hi Captain Petter, what an awesome channel you have. It has really helped me learn so much about aviation. Thank you for the great content. To be honest, I thought the Boeing 737 winglet to be a bit shorter, maybe about 5 to 6 inches shorter than you. Thank you.
My guess (didn't cheat, I swear): 1.5 metres
Till you waist, probably
Check out the video to get the answer 😉
Well, that was absolutely unexpected!
not even
MarEpor oh! Your picture is so cute
Half your height?
Santiago Martinez that would be too small lol
Eagle wingtips also have gaps between the feathers (making them look kinda like fingers). Is there any aerodynamic advantage to that, as opposed to having a continuous / solid wingtip edge? Could or should that structure also be mimed in aircraft wingtips?
A great innovation.
Slightly taller than you, 2m maybe?
As high as you sir
lil bit less than double your height
I am a first officer of air Baltic and also your channel is instresting
The first winglets were proposed by Fred Lanchester roughly a hundred years ago, but sat unnoticed. My dad was Fred's last protégé between 1946 and his death, so when it was discovered Fred had studiously avoided the camera, painted his portrait from memory. Dad then went on to design Concorde's variable nascelles, as the sound wave kept causing engine flameouts. And much more, but this is about aviation. Other photos have been discovered since, Fred doing a Where's Waldo in the background.
Excellent & informative video as allways! Thank you very much :)
Anybody here know why we don't see winglets on the tail surfaces?
Great video , Always fun to learn something new.
Great video. I was going to suggest this as a topic, but you got to it first.
I would say the winglet is a little taller than you. And now let's go watch that video ! :) Thanks for your videos, Petter !!!
Yay, got it right, although I wouldn't have tought it would be THIS tall !
Excellent episode, many thanks
Thank you! Glad you found it interesting!
I remember reading somewhere that winglets reduce the stall angle of attack slightly (increase stall "speed" slightly). Is this true?