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PLANE on a CONVEYOR BELT! Will it TAKE-OFF? Explained by CAPTAIN JOE
AVIATION FAILS Debriefed by CAPTAIN JOE / 10 Incident-Mishaps-Funny Stuff explained 1 minute EACH!
UNITED 328 Engine Failure! WHAT CHECKLISTS did the pilots use? Explained by CAPTAIN JOE
WHY is the FOLLOW ME CAR so IMPORTANT?! Explained by CAPTAIN JOE
How HIGH CAN PLANES fly? What is the COFFIN CORNER? Explained by CAPTAIN JOE
WHAT do the buttons do on a FLIGHT CONTROL YOKE? + TOP 10 YOKE designs! Explained CAPTAIN JOE
Boeing 737! MAX is BACK! Re-certification and understanding MCAS! Explained by CAPTAIN JOE
TOP 15 Reasons for HARD LANDINGS! DON'T BLAME the first officer! Explained by CAPTAIN JOE
How does FLY-BY-WIRE work? The future of flight controls! Explained by CAPTAIN JOE
WHAT is ACARS? HOW does it work? Explained by CAPTAIN JOE
ANIMALS on PLANES? Is your PET SAFE flying in CARGO??? Explained by CAPTAIN JOE
How to DECODE and READ a TAF? Aviation weather! Explained by CAPTAIN JOE
TRAFFIC PATTERN at London City airport with ALL CHECKLISTS! Explained by CAPTAIN JOE
How to fly an RNP APPROACH with a BOEING 747??? Explained by Captain Joe
Boeing 747 PILOT flies traffic pattern with CESSNA 152! Including CHECKLISTS by CAPTAIN JOE
Do PLANES have ANTI-SKID??? How to PREVENT SKIDDING? Explained by CAPTAIN JOE
HOTEL ROOM workout tips for PILOTS! No GYM needed! Inspired by Captain Joe, Paula Krämer and Nam VO
Why do PASSENGERS BOARD from the LEFT? Why does the CAPTAIN sit on the LEFT?Explained by CAPTAIN JOE
How do PLANES SLOW DOWN on the RUNWAY? Autobrakes System EXPLAINED BY CAPTAIN JOE
SHOULD YOU become a pilot in 2020? What is your PLAN B? Explained by CAPTAIN JOE
How to DECODE METAR REMARKS? (part 2 METAR series) / Explained by CAPTAIN JOE
How to DECODE a METAR report (part 1) / Explained by CAPTAIN JOE
WHY do AIRPLANE TIRES have a STRAIGHT LINE PROFILE??? Explained by CAPTAIN JOE
COCKPIT/INSTRUMENT abbreviations! DO YOU KNOW THEM ALL? Explained by CAPTAIN JOE
How PASSENGER planes are CONVERTED to carry CARGO! Explained by CAPTAIN JOE
The most important AVIATION WEATHER ABBREVIATIONS! Explained by CAPTAIN JOE
How do PILOTS prepare BRIEFINGS? LEARN how pilots give departure and approach briefings! CAPTAIN JOE
Captain Joe LIVE STREAM
Airbus A220 withstanding the COLD WEATHER Certification
HOW did the 747 break the TRANSATLANTIC SPEED RECORD??!! Explained by CAPTAIN JOE
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It has just been 1 minute in the video but I want to share that I have watched a STOL video of a tail dragger aircraft which was able to takeoff in about 6 ft of ground roll due to "HIGH HEAD WINDS".
No,because of no airspeed...
But what if the engines are not running but the conveyor belt moves at take off speed?
Captian Joe Marketing!!
Captain Joe Did u run out of topics to make video on? Why such a simple topic, even an 8th grader can answer that.
NYAGA WESLEY MUNENE
I WOULD LIKE TO UY IT BUT I CANT I DONT KNOW HOW
Wesleyng Wei Lik
Physics and logic (Zero Net Force)
Its a shame this needs answering 😂
Gotta love Kennedy Steve, what a legend!
Of course the plane can take off. The wheels are free spinning when the brakes are released. Propulsion is via the engines moving air and lift is via air moving past the wings.
Ok but for the first part, if the wheels being matched exactly prevents the plane from developing forward momentum, how is it that the wheels ever even began spinning? Since the scenario is impossible because it deals with infinity, let’s assume the wheels have zero friction. The plane will take off with the wheel speed accelerating to infinity. With even the tiniest amount of friction, the wheels would melt.
what if the conveyor runs at the same time as the plane so the ground speed is faster than run only with engine So if conveyor 150 knots and the plane just runs at 120 knots so the ground speed is 270 knots right .
No, the plane won't takeoff.
The second part blew my mind 👌🏾. I’m glad we never got examined before on this 😃
Four words.. No airflow, no lift
Awesome job with the bone marrow donation Joe! Much respect!
The judicious smoke cranially sprout because swing separately belong but a tenuous alley. spotty, secret grandson
This riddle was actually tested by mithbusters, with a small aircraft (i think was a cessna 150 or a piper) taking iff a convayer belt. It took off with no problem.
We can compare this topic with ourselves on a treadmill. While running on a road, we can feel the airflow around us. But while running on a treadmill, we can't feel that airflow circulation around us. So my opinion will be the plane won't take off.
Seriously ? Those who proposed this know NOTHING about aviation.
I think it will take off
Here is where the riddle falls apart: Speed of the wheels in relation to _what_ ? Speed of the belt in relation to _what_ ? Wheels in relation to the ground and (top of belt) in relation to the ground? Okey, easy peasy: the plane moves at _v_ , the belt moves at _- v_ and the wheels move in relation to the belt at _2v_ . Wheels in relation to the ground, belt in relation to the wheels? Even easier: belt remains stationary the whole time. Wheels in relation to the belt, belt in relation to wheels? Super-easy: belt moves the wheels, the wheels do not spin at all. Wheels in relation to the belt, belt in relation to the ground? That is a paradox. That is trying to prove that -1 = 1.
The wheels are moving but the plane isn’t so There is no airspeed so the plane can’t takeoff
No. The wheels turning don't supply lift for the wings.
Quist Science Station
Of course, the plane can't take off, the speed of the conveyor belt is the same as the wheels, and when they come into contact, they apply the same force on each other. Thrust (PLANE) and Drag (CONVEYOR BELT) counteract each other. But when thrust is in more action, the plane can move along. But these 2 forces are the same, generating no detectable motion. (JUST SAYING AND EXPLAINING WHAT I THINK). And I didn't watch the full video when typing this.
for me the best looking planrs are the boeing 777 concordand the b 2 bombet
I would guess no. The airplane needs to speed up to generate any lift. As soon as the airplane starts to roll, the conveyor belt starts to move the plane in the other direction. So the actual movement of the plane is zero. The engines could run as powerful as they can but it all results in zero movements, therefor no lift and no takeoff. Thats my guess.....
*before Joe explaining: I think the plane will not takeoff as the wings are the ones that make a plane fly. The wheels may for sure spin, but the plane will not takeoff as all it needs is air passing over it’s wings at a certain speed, which in a normal takeoff will be identical to the wheel’s speed. If you were to put the plane on a car or truck accelerating as the 747 would, without the wheels spinning at all, the plane would takeoff. That’s how some seaplanes takeoff on land. Btw I’m a 15 year old super into aviation and wishing to become a pilot!
Obviously it can't take off! You need to move relative to the air, not the surface!
If you were to attach the plane to something on the ground, eg, a jet bridge, and start the conveyer belt, the wheels would start rotating but the plane obviously wouldn’t move. Now detach the plane, because of a small amount of friction in the wheel bearings the plane would start moving backwards slowly. Add a little bit of engine thrust to compensate for that. Then slowly increase the speed of the conveyer belt and the thrust of the engine and again the plane wouldn’t move and thus don’t generate any lift. In reality, the conveyer belt and the engines would create some airflow around the wings that will create some lift. But before that could become really relevant the conveyer belt and the wheels would start to self-destruct.
obviously no, aitplane needs air under the wings
I say No.
Why : Because in this situation the plane cannot have any air speed => no lift => no take off. (I answer when the questions are asked) (I'm french so sorry for my approximate English)
This is so funny LOL :-) Next time use a huge fan. Would like to see that one instead.
While not airline-specific, this reminds me of another transportation industry - the railroads. Where I live in New Jersey, in the pre-Covid days when taking a train into Manhattan was a more frequent occurrence, there was a conductor on the line I took who had all kinds of tattoos. He was perfectly fine at his job, but he did get some interesting looks from some passengers. But obviously New Jersey Transit did not have an anti-tat hiring policy. Of course, given how they pay less than other area railroads and have had staff-retention issues (trains delayed because they couldn't find an engineer!) so long as you have a pulse you're a good candidate...
Yes it will move forward and take off! But only due to thrust from the engines... The conveyor belt's velocity is completely irrelevant, since the wheels are not powered!
Soak the tires with oil. Apply full brakes. Full thrust. Take off.
Nope, it's not gonna happen, as there will be less lift generated on the wings during that time.
The plane would accelerate even without wheels, just very painfully. The conveyor belt can't actually push the plane backwards, the wheel and belt will just match their rotations while the plane accelerates anyway.
No because the wings need pressure
Sorry, but your answer is misleading. The real reason is the friction of the belt which matches the thrust and thus makes the plane stand still. Additionally you just accelerate the tires. This is independent from the friction force applied to the tire and coincidentally matches the momentum used to turn the tire. (Due to the rolling condition of tires)
Commenting when i'm at 1:00 in the video, no I don't think the plane can take off, since the plane isn't moving the airspeed is zero, so the wings don't generate lift (assuming there's no front wind) the engines would just produce thrust to keep the plane in the center of the conveyor belt, without any lift I'm curious though, if the engines were in front / behind the wings, would it move enough air to possibly give the plane enough lift to take off without moving?
maybe if the breaks are on the plane would take off..? i don't know if the breaks can handle it though
How will the aircraft create lift for the wings?
question: will a plane take off on a runway with extremely low surface friction?
Yes. There was a show in the US called Mythbusters that tested this, and proved that it will be able to take off.
No. Just because the wheels move as fast as takeoff speed the wings won't have air to generate lift
Can the same principles of an aircraft carrier slingshot system be applied to airport runways for commercial aircraft?
Even if the plane reach 300kn there will be ni lift on the wings
planes takeoff with airspeed under wings which generates lift not wheels' speed
Again safe with a single sensor without redundancy? Yeah Boeing concept of $afety saving.
Myth busters already tackled this, the plane takes off
I love this question. Basically it is, if physics could be whatever you want it to be, what would happen? The answer is whatever you want. You’d probably set the engines for takeoff and the universe would end.
Why is this man a pilot? This man needs to be a teacher
Priyantha Thrikawala Waduge
Next time the riddle is how do you taxi with the conveyor belt
You have the courage to conclude on a puzzle that even physics don''t want dare (or bother) to answer. Ballsy! Even Randall at XKCD decided to write a blog post about it instead of making a comic: blog.xkcd.com/2008/09/09/the-goddamn-airplane-on-the-goddamn-treadmill Even after watching your video I have no idea what would happen, and I'm not going to argue about it either. :-)
well, technically, if there is extreme headwind (like slightly above take-off speed of 747), it could take-off (it will basicaly be like VTOL B747)
Hi ! Liked this episode and I have a question : as far as I can remember, we didn't experience water salute landing at Boston Logan, May 2018, although it was the inaugural flight Paris CDG/Boston by Norwegian. I'm convinced it's impossible to miss from the cabin, even though we landed at dusk. Thanks for your videos, I love them !!
I think you are forgetting some things. Maybe over-thinking this a bit. Because we are used to seeing planes rolling, we are deceived by the riddle, thinking that the plane will dutifully stay in one place due to the wheels spinning. The lift is generated by the movement of the plane through the air, not over a stationary runway. The wheels and the conveyor belt are irrelevant, as long as the wheels are theoretically intact. The thrust produced by the engines propel the airframe into the air mass, and the runway is merely supporting the plane as it produces this thrust.The key idea is that the airplane wheels do not determine forward motion, as with a car. Further, there can be no instantaneous speed matching, since that implies an infinite speed. Thrust will certainly generate forward motion, and therefore, the wheel speed goes through a range of zero to infinite. A moving conveyor belt does not keep the plane in one place, either. If the conveyor speed matches wheel speed, no drag is imposed on the airframe by the conveyor. In theory, you could have the wheels and the conveyor move to mach speeds, (or a theoretical infinite speed) and the wheel assembly would break apart, but the thrust produced by the engines would indeed continue to move the plane through the air mass, and if the wheel assembly was still intact at rotation, it would take off. This so-called riddle is founded on limited thinking.
There is a way to make it fly way sooner as travel distance on a runway! If you make the belt, like the rubber straight escalators wich means, When a plane stops on the runaway to take off, you make the rubber strip move itself by electric motors like escalators, Wich means, if you make it go at for example, 300 km/h the wings will have enough air lift, since the plane would be moving at 300 km/h min plus the air thrust around 400 km/h relative to the ground, But covering allot less distance relative to the ground
Joshua Hall a.k.a. Controlla
Great video Captain Joe.☺️
The tested it on Mythbusters. The plane takes off.
What if the plane was a VTOL F35? 🤔😉
Next Question : Why some planes fly over Antarctica while most won't
the plane will be unable to take off, due to zero lift being produced by the wing
The plane flys... period. The mythbusters even tested this. So long as the wheels turn freely it flys.
It won't! The plane will be stationary and no lift on the wings!
Photons do not move sideways. The right model to explain this effect is the wave model.
Waste of time. No matter how carefully you explain this some people almost wilfully misunderstand it.
Jonathan De Souza
8:05 That is so logical 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
Fly safe Joe.
No, having the conveyer-belt turning excatly the same speed as the wheels will define the aircraft to completely stand still, compared to the sorroundings. (otherwise, the definition is untrue). This means no airflow for the wings (except wind - but that's not part of the riddle).
No you can't. You have ti make lift
Disregarding fuel use, it should be able to take off? That large of a conveyor belt, moving fast enough to have the force transmitted through the bearings into the plane, would also accelerate the air over the runway to a ridiculous extent
You are very handsome!
It won't lift off, because the air around the plane isn't moving, therefore the plane won't have a lifting force.
Well no, idiots. The plane will only take off if it has lift from the wind! And making the plane stay on the ground isn't going to work. Example: Let's say the conveyor is moving a 120kts. And the plane is also putting thrust and idling at 120kts. So now the plane is staying still. It will NOT take off. Why? Because there's nothing to lift that aircraft! Conclusion: The plane will not fly because there is no lift being generated from the wings. Sometimes I wonder how these people think of these incredibly stupid ideas.
You are incorrect. The plane engines pull it through the air. The wheels are there only to prevent the fuselages from contacting the ground. So long as the wheels can turn freely at speeds approaching infinity then it will fly. If the wheels can't turn freely then that may be a factor to keeping it on the ground but that isn't part of this theoretical exercise.