TAKE-OFF Speeds V1, Vr, V2! Explained by "CAPTAIN" Joe

  • Am Vor 4 years

    Captain JoeCaptain Joe

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    Today´s topic will be airplane take-off speeds, V1, VR and V2. I´m sure many of you have heard about these speeds.
    I will explainin more detail what is so important about V1.
    By the book V1 is defined as „The speed beyond which the takeoff should no longer be aborted“. Meaning that in case you experience any trouble with your plane before reaching V1, the classic example would be an engine failure, you would immediately abort your take-off and would apply all necessary matters to bring the aircraft to a stop.

    Vr or better know as Rotate is defined as, “The speed at which the pilot begins to apply control inputs to cause the aircraft nose to pitch up, after which it will leave the ground“.
    Easiest way to memorize Vr is, the point where the nose wheel leaves the ground vortexes are created at the wing tips which „rotate“ behind the aircraft.

    V2 is defined as the Takeoff safety speed. The speed at which the aircraft may safely be climbed with one engine inoperative.

    I will go through speeds and hope my explanation solves a few question about these mysterious speeds.

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Yaman Arora
Yaman Arora

Can someone explain why some aircraft have same values for V1 and VR?

Vor Tag
Brian Todd
Brian Todd

Great side example videos. But how do you calculate weight of a passenger plane with lots of passengers? Luggage is easy, because it's weighed (mostly), and fuel is easy because you know the weight per gallon. But how do you figure out how much 400 passengers weigh on a 747? What happens if you are transporting everyone from a Big & Tall convention?

Vor 2 Tage
Charlie Green
Charlie Green

In the example of the bird strike, would the Captain not have to dump a sufficient amount of fuel before attempting to land? Was that a given?

Vor 5 Tage
Charlie Green
Charlie Green

@ZK-APA Thanks for the reply but if the birds take out the engines they would not be able to do that either.

Vor 2 Tage
ZK-APA
ZK-APA

That aircraft is a boeing 757, which doesnt have fuel dumping. So if its overweight, it has to burn off the fuel by flying and burning it off.

Vor 3 Tage
MyCargoShip
MyCargoShip

So Captain Joe is not a captain? Not honest? Not trusted? R U a Joe? Trust is most important in this industry. Misrepresenting yourself is funny but dangerous in the airline industry? I'm just asking.

Vor 9 Tage
ZK-APA
ZK-APA

There are 2 definitions of captain. One is the legal definition (ie someone who has the licence to fly as a commander), and the other is the company designation. So therefore though Joe is a FO in his airline, he is not misrepresenting by calling himself as Captain (as he does have an ATPL). Also that is more of his brand name rather than him calling himself a captain

Vor 6 Tage
Tahar Ben Seddik
Tahar Ben Seddik

Very important calculated take off speeds.

Vor 9 Tage
Franco Tenerelli
Franco Tenerelli

Captain Joe, that was the best anyone has ever explained any part of a takeoff procedure that I have ever heard. Thanks Captain Joe! Frankie t Bronx country.

Vor 10 Tage
Meryem Eken
Meryem Eken

Hello, thank you for perfect video, I am writing from Turkey and I am a student Pilot However I don't understand v speeds especially Vs0, Vs1 . I know these are stall speed but I change a lot .Because I use Cessna 172 N and thereis no like Vef Vmca, V1, V2 speed on my checklist . Could you help me this topic.

Vor 11 Tage
Tom McAuliffe
Tom McAuliffe

SOLD!

Vor 15 Tage
Nasko Np
Nasko Np

Ovase.sprda.sa.ybistvom.

Vor 17 Tage
Marcos Tovar
Marcos Tovar

Thanks ✈️👍

Vor 18 Tage
BeaglesGuy
BeaglesGuy

Always wondered exactly what "rotate" meant. Thanks.

Vor 18 Tage
Meera Meera
Meera Meera

Sir what are the medical test are taken to become a pilot

Vor 19 Tage
Justincredible V
Justincredible V

The airplane i fly uses V2, i fly for Flight Commander Air #Flyboy

Vor 19 Tage
Bernardino Tobar
Bernardino Tobar

Lo puedes traducir al español? No entiendo, pero me interesa.

Vor 20 Tage
Roy Oetting
Roy Oetting

It has been a while since I've flown and I was surprised that blue line wasn't mentioned. V2 and blue line aren't the same.

Vor 20 Tage
Adri Bisenberger - Kromhout Jzn
Adri Bisenberger - Kromhout Jzn

What exactly is it with those 965 thumb-downers not liking this video??

Vor 20 Tage
Ћ
Ћ

Ჰისწხჰო ო?სჰ?ქ?აუბქვს?პუქქსჰვო??ქოსქ?ქსვყოწ?ზჰწზწი ?ზვ?

Vor 21 Tag
Blue Star Industrial Arts
Blue Star Industrial Arts

What happens if you are past V1, not at V2, and you have a catastrophic failure?

Vor 21 Tag
ZK-APA
ZK-APA

You abort. PS by catastrophic I'm assuming a failure where it is certain that the aircraft won't be able to maintain a safe flight.

Vor 9 Tage
Naleen Perera
Naleen Perera

Dear Captain Joe I Need To Know What Is The Rated Ground Speed K.m.p.h Of The A-380 When The Air Craft Vr Mode ?

Vor 22 Tage
Lloyd Kenney III
Lloyd Kenney III

thanks for the info

Vor 23 Tage
flouserve
flouserve

Le ha faltado lo que en castellano es VCDC que viene a ser Vamos coño dale caña....

Vor 24 Tage
ericskateboy’s eye
ericskateboy’s eye

thank you

Vor 25 Tage
paul belfrage
paul belfrage

Fascinating stuff!!

Vor 25 Tage
MORTIMER SCHNERD
MORTIMER SCHNERD

Moral is if you're in a single engine aircraft on takeoff, and the engine croaks at just above V1, you're headed for a trip through the tulips?! Or, this just doesn't apply to piddly-dink little airplanes?

Vor 25 Tage
Leonard Smart
Leonard Smart

Thanks 😊 🙏

Vor 26 Tage
VK4JMP
VK4JMP

I have flown several light aircraft out of YGLA and the point where you close the throttle, apply full flaps and land on the remaining runway is 200 feet above the runway! The runway is 1920 metres long and take off requires 150 metres of runway.

Vor 26 Tage
Jarek Ferenc
Jarek Ferenc

Perhaps an academic question: a small, light aircraft needs low speed and a short strip to take off, but starts its takeoff on a very long runway. This means that in the case of a serious problem the pilot has plenty of runway available to slow down the aircraft to a full stop. Hence, he can accelerate his aircraft to high speed (say, 170 kts), and still be able to stop before the rwy end (so V1 = 170). If the Vr of this aircraft is of 130 kts, what will happen in the cockpit: will V1 be called out (when the aircraft is already airborne, I suppose), or just "80 knots", and "rotate"? I will appreciate the comments from the pilots who fly small aircrafts at large airports.

Vor 26 Tage
ZK-APA
ZK-APA

@Jarek Ferenc V1 callout is always there, so when v1 and vr is same, call is v1 rotate in one flow. PS the "80 knots" isnt always there. Sometimes it may be 100 knots or just a simple airspeed alive.

Vor 9 Tage
Jarek Ferenc
Jarek Ferenc

@ZK-APA, thanks a lot for the explanation. As I understand now, the crew, having the speeds calculations done, agrees that there will be no V1 callout, and "80 knots" will be followed by "rotate" only, or "80 knots" will be followed by "V1, rotate" (pronounced immediately).

Vor 9 Tage
ZK-APA
ZK-APA

The upper limit of v1 is always vr, irrespective of runway length. Because at vr the aircraft initiates it's lift off rotation, so the concept of v1 stops there itself.

Vor 9 Tage
Stephen Brown
Stephen Brown

Very interesting thankyou

Vor 27 Tage
Pablo D'Ambrosio
Pablo D'Ambrosio

Mmmm your lift is produced by your wings, so I don't understand the one engine explanation of v2. One, two or four the only thing that matters is having enough speed to generate lift.

Vor 27 Tage
ZK-APA
ZK-APA

Yes wings produce lift, but it's actually thrust (more specifically excess thrust) which makes an aircraft climb. More thrust that is available, the faster it climbs

Vor 26 Tage
Frankie Rodriguez
Frankie Rodriguez

I will never use any of this information but it was still cool.

Vor 28 Tage
kyle mengel
kyle mengel

Acceleration time checks, Alaska frozen dirt runways, oh the memories..

Vor 29 Tage
Jeff Do
Jeff Do

Abort not just based on speed but rwy length you could have a 15K feet rwy hit V1 at 5k feet. Still can stop with 10k remaining

Vor 29 Tage
ZK-APA
ZK-APA

In that case v1 and vr will be the same. And if vr is reached, the aircraft would have transitioned to the airborne phase. Hence you can't "abort" the take off

Vor 26 Tage
Xianlian Zeng
Xianlian Zeng

Why is it the Capt wears 3 bars on the epaulette? A Capt wears 4 bars while a Senior First Officer wears 3 bars.

Vor 29 Tage
Mer Pineda
Mer Pineda

Hi wow n wow hahaha nice take off 🙏

Vor Monat
Ram Redkar
Ram Redkar

Thanks Captain for easy explanation 😘

Vor Monat
Christopher Leamons
Christopher Leamons

Captain Joe was celebrating 100k subscribers back then. Here we are in 2021 and he has 1.5 million subscribers! Way to go, Joe!

Vor Monat
Саша Говрилов
Саша Говрилов

The deadpan panther pharmacodynamically copy because teeth happily trip modulo a wacky leaf. flagrant, uttermost ox

Vor Monat
Badruddin Shaikh
Badruddin Shaikh

Great information,Thanks

Vor Monat
Bhisham Chandiramani
Bhisham Chandiramani

Air India pilots call V2,

Vor Monat
Timmy McLennan
Timmy McLennan

Thanks Captain Joe👍 that was great,looking forward to seeing more. Cheers 🇦🇺👍

Vor Monat
Andy Man
Andy Man

you should have included Vne

Vor Monat
Jkdm 76
Jkdm 76

Dear Joe, thanks for your excellent vids! May I respectfully point out that you seem to be "out of uniform"? A Captain's shoulder boards have 4 stripes, not 3, sir.

Vor Monat
Scott Leppard
Scott Leppard

3:32 a runway over run may severely damage your plane. Screw the plane, what about me?

Vor Monat
Mike Dooly
Mike Dooly

The 757 on its maiden flight took off from Renton Municipal Airport heading north over Lake Washington and just after liftoff ingested a seagull into the right engine. The Airplane just went into Payne Field Everett and we trucked the spare engine up and changed it. I remember the write ups, Birds seen entering the right engine Inlet, and the second was Fowl smell from the air conditioning.

Vor Monat
Francis Artanis
Francis Artanis

Does he actually work in a tie shop?

Vor Monat
Obama Al s30de
Obama Al s30de

https://youtu.be/6spiGWTG7Y0

Vor Monat
Wol747
Wol747

You could have added Vmcg and Vmca to the Vs! Quite important.

Vor Monat
brian carno
brian carno

I notice you called the spoilers "ground spoilers" but I thought you could use them when airborne

Vor Monat
Bro Scientist
Bro Scientist

I use similar terminology while having a Taco Bell bm.

Vor Monat
GUSTAVO ALBERTO RAMIREZ
GUSTAVO ALBERTO RAMIREZ

Vi el video pero no entendi un culo.

Vor Monat
Jo Fox
Jo Fox

Why do some airlines no longer call V2?

Vor Monat
Graham Dawes
Graham Dawes

At Lydd a Piper Navajo had gone down the runway and passed the V1, the right tank exploded and blew off the wing , he did stop on the runway, shut it down and walked away in utter disgust , it had just been in engineering for checks and a sensor shorted out in that tank. I do not think he had any choice about his decision to abort it. They never saw him there again.

Vor Monat
Terrell Phillips
Terrell Phillips

Hello Captain Joe! Thank you for your very educational YouTube Channel! Here you discussed V1, VR, Vlo, and V2, but you didn't discuss the measure of ground speed. Would you reply with a BEST ESTIMATE in MPH on the runway, what miles per hour a typical 737 (i.e. a Southwest Passenger Jet) is traveling at point of V1, VR, Vlo, and finally V2? Thanks!

Vor Monat
the9thbit Videos
the9thbit Videos

i still think a drogue chute should be fitted to these planes as a last resort braking option :)

Vor Monat
Buck Murdock
Buck Murdock

why is "Captain" Joe a First Officer?

Vor Monat
Rob Gibson
Rob Gibson

Love that you're talking about your 100k subscriber video. Then I looked at how many you have now. 1.49M. Nice work!

Vor Monat
S Navarro
S Navarro

Assuming that vr is exceeded and v2 is not reached yet, this means that the plane is in danger in case of an incident. IS this correct?

Vor Monat
Charles Kristopfer
Charles Kristopfer

goood explanation so non aviation personal will have some knowledge of aircraft other wise I have to go to school and pay the fees thanks to this fee knowledge provided

Vor Monat
olive tree
olive tree

Thank you for the information. I always like to learn things about everything and anything for my own knowledge. Please Keep up the good work and keep those videos coming

Vor Monat
Ken Brownfield
Ken Brownfield

I thought captains would have 4 gold stripes on their epaulets.

Vor Monat
Lisa-Carina Oborowski
Lisa-Carina Oborowski

Ready for takeoff?

Vor Monat
Ed Moore
Ed Moore

never ceases to amaze me that pilots cannot speak english to commun8cate. gotta have their own special codes to lift off and get the gear up. what happened to rotate?

Vor Monat
Iz Corrales
Iz Corrales

Great vid 👍 keep up the good work sir

Vor Monat
Günter Schneider
Günter Schneider

Great video.

Vor Monat
Alec Whitehouse
Alec Whitehouse

Easy Jet, say no more

Vor Monat
Juan Carlos Jimenez
Juan Carlos Jimenez

Pasado ese punto V1, se ha de seguir para llevar el avión al aire cuando se tiene velocidad de rotación (Vr). En ese momento no se aconseja a tratar de frenar, si un motor falla puede ser compensado por la velocidad ( más de 220km/h ) y el otro motor . Un MD-82, el segundo motor garantiza un ascenso continuo de 2,7 grados para que el aparato pueda regresar con seguridad nuevamente a la pista para efectuar un aterrizaje de emergencia. Bueno yo soy un piloto prueba y recoge aviones por el mundo: Suicida!

Vor Monat
Utitofon Jimmy
Utitofon Jimmy

Well I didn't even know about any of these

Vor Monat
Max jet tv live
Max jet tv live

Where are you from captain joe

Vor Monat
insylem
insylem

Your explination of V1 is better than others Ive heard. Thanks

Vor Monat
Currie Stevens
Currie Stevens

Imagine being on that plane LOL

Vor Monat
Aaron Stephen
Aaron Stephen

I will like wtf 😂💀

Vor Monat
Tomek Iksinski
Tomek Iksinski

Greta said: aircraft generate to much CO2 and such should be illegal and banned around the world :) so no more V1, Vr, V2

Vor Monat
Aubrey Tycer
Aubrey Tycer

I flew jump seat in a BAC 1-11in the '70's multiple times. My father, a pilot, explained V1 as the point that the plane became aerodynamic. VR the velocity that sufficient lift was available to fly. V2 as the point no runway was left to abort the takeoff. Perhaps I miss remember. He said that the plane on one engine could initiate takeoff roll to climb out and break the sound barrier. The second engine was purely a redundancy.

Vor Monat
jeff bricker
jeff bricker

Vr is highest speed below Vr where you can stop on the remaining runway...... V2 is also minimum speed to maintain control (rudder) with engine out

Vor Monat
Mark-Stephen Vana
Mark-Stephen Vana

Cool to know.

Vor Monat
Walid Aksoy
Walid Aksoy

It would be nice to let us know that V here ,stands for Velocity

Vor Monat
Shane Giblin
Shane Giblin

Delta

Vor Monat
Dan Ivanov
Dan Ivanov

what if all engines fail after v1 but before v2

Vor Monat
almostfm
almostfm

@Amal M M But there's fine print attached to that "must take off" rule, and that is that you can abort the takeoff after V1 if you're unable to maintain safe flight (like in this case, both engines out). In that case, you've got two options: brake as hard as you can so you drop as much speed as possible, so if you do hit anything you'll be going slower, or try and limp an unpowered airplane into the air, let it stall, and slam into the ground.

Vor Monat
Amal M M
Amal M M

@almostfm Yeah agree, But AFAIK you have to take after V1, that's the global rule, If you didn't you will overrun the runway and crashes

Vor Monat
almostfm
almostfm

@Amal M M If all engines fail, it's going to be a damn short flight. In fact, the flight will be just long enough to take you to the crash site.

Vor Monat
Amal M M
Amal M M

After V1 in any case you have to take off

Vor Monat
Ulrich Jackisch
Ulrich Jackisch

stop boozing, and nicotine, half raw red meet, exercise eat cornflakes first up nothing until lunch time unless you do heavy work I went from 98 kg to 64 now 72, perfect blood pressure 85 YO M bought a new fast car recently, So live healthy stay out of the hospitals, this comes for FREE

Vor Monat
Ulrich Jackisch
Ulrich Jackisch

contradictions to shift Alterio Motive Books PO

Vor Monat
Cho Shane
Cho Shane

V1 No aborted takeoff at or after this speed, Vr is where you rotate for takeoff, V2 is the safe takeoff speed/also safe speed in case of one engine malfunction.

Vor Monat
Thomas Amunau
Thomas Amunau

Really good. the good pilot always study thanks capt

Vor Monat
Pradeep Thakur
Pradeep Thakur

wonderful captain

Vor Monat
Earl Driskill
Earl Driskill

Very good explanation, now all I have to do is watch other You Tube Videos, about aircraft operations and how to fly, and I'll be ready to take my written private pilots license.

Vor Monat
dannafe
dannafe

I'm not above considering pulling the gear up if I have to abort above V1. ;-)

Vor Monat
dannafe
dannafe

@almostfm No. None of them do. Almost all aircraft main landing gears go "over-center" and the mass of the aircraft keeps them from retracting while there is 'weight on wheels'. Nose (and tail) landing gear have to be physically "pinned" to prevent retraction while the aircraft on the ground.

Vor Monat
almostfm
almostfm

Don't most airliners have "anti-squat" switches that prevent you from retracting the gear while the plane is on the ground?

Vor Monat
argyll1952
argyll1952

In theory, could V1 for a lightly laden aircraft taking off into a 20 knot wind on a very long runway, be after V2? If you see what I mean.

Vor Monat
ZK-APA
ZK-APA

No. Because of definition. V2 is a speed in which you can climb. V1 is a speed you can abort on the ground. Hence if you are at v2 you are already in the air or are in the process of it, so V1 wont make any sense

Vor Monat
Clint Eranovic
Clint Eranovic

I've always thought that V1 is a flawed concept since if a plane is not accelerating nominally, it might not even reach V1 before running out of runway. A pilot might be looking for V1 but because the plane is not accelerating properly he could be further down the runway than he expects to be. There surely needs to be a combination of a V1 speed and particular position on the runway at which he should be reaching that speed, or alternatively a timer to show how long it should take to reach V1. There have been accidents that have happened because for some reason the plane has not been accelerating properly and V1 was not reached before the plane actually ran out of runway. The Yak-42 that crashed where the pilot was inadvertently applying the brake on the takeoff run is an example. His engine readings would have been showing the correct values but he was not accelerating enough to reach V1 at the point on the runway he was expecting. The crash of a DC8 in Alsaka in the 1970s was also caused by the same problem where the brakes were applied on an icy runway and the tyres were sliding on the ice and eventually burst causing more friction with the plane eventually running off the end of the runway. The Munich air crash in the 1950s is another example where slush on the runway was the cause of reduced acceleration. It really comes down to the compromise on runway length. If a runway was 20 miles long there would be no V1 since a plane would reach take off speed long before it reached a speed at which it would run out of runway if they had to abort. For a small plane like a Cessna on a long commercial runway there is surely no V1 speed since it will reach takeoff speed without a V1 becoming relevant.

Vor Monat
Clint Eranovic
Clint Eranovic

@ZK-APA What would make it obvious to the pilot is a marked position on the runway or a timer, that's all I'm saying. Unfortunately there have been cases where it wasn't obvious to the pilot and they have led to accidents.

Vor Monat
ZK-APA
ZK-APA

@Clint Eranovic Then that is more because of either calculation error or some issue with the aircraft. Such a situation can't happen randomly, and if it does, it should be obvious to the pilots (rather than them fixating on V1)

Vor Monat
Clint Eranovic
Clint Eranovic

@ZK-APA I realise that but if a plane is accelerating more slowly than it should be then in theory it might never reach V1 , with the pilot looking for V1 but getting closer and closer to the end of the runway. V1 is presumably based on an assumption of nominal acceleration, which may not be the case for a number of reasons.

Vor Monat
ZK-APA
ZK-APA

V1 speed is a function of runway length and condition. Shorter the runway is, the lesser V1 will be. The longer the runway is, the higher V1 will be with a max limit of Vr (as you wont abort if you're rotating)

Vor Monat
Big Country
Big Country

Excellent explanation!

Vor Monat
Barbara Woodworth
Barbara Woodworth

🇮🇱🇮🇱👍👍

Vor Monat
Mannevaru Surenderrao
Mannevaru Surenderrao

Sir beautiful explanation. Thanks..

Vor Monat
alexugljesic
alexugljesic

As a CPL and flying instructor I knew all this, but still enjoyed you presentation...

Vor Monat
savoy99
savoy99

Duh. I always thought that Vr was when the plane had accelerated sufficiently to rotate through a horizontal plane and become airborne.

Vor Monat
Capt. Tamre' Colby
Capt. Tamre' Colby

@Mike Barker I am so tired for support Mike. The trolls are blaming CAS for lack of support. What your rivals truck is getting away. Not my problem. Tell my fellow Americans. Our next target is American traitors. Trump supporters are not welcome among the American Allies. They are our targets, it is that serious. Capt. Tamre' Colby USAFE/NATO CAS

Vor 21 Tag
Mike Barker
Mike Barker

Excellent Capt. T. Colby.

Vor 28 Tage
Capt. Tamre' Colby
Capt. Tamre' Colby

Ah, well yes that is exactly what it is. Vr literally stands for "velocity for rotation" which is when the wings are producing more lift than the weight of your plane. The question is do you know how much your plane weighs? In an F-16 at lean weight the speed would be around 140kts. Fully loaded with maximum ordinance it's a little over 180kts. Luckily in a lighter aircraft the pilot can generally feel when he reaches Vr as you can feel a drifting sensation as the planes wings lightens the friction from the wheels on the ground. On larger aircraft that sensation is less apparent and therefore they must be aware of the absolute minimum and exceed it slightly to be certain. But all in all the Vr can vary considerably as a result of many factors, weight being only one. A wet runway will slow you down, a tailwind increases Vr and hot air is thinner than cold air as is high altitude takeoffs as opposed as those at sea level. So there is no set Vr as many factors come into play. Luckily a larger aircraft is less affected than a smaller one therefore the Vr range is narrower and the minimum rotation speed a little more forgiving to calculate. One last thing, after rotation the aircraft must have enough power to accelerate, even slightly, because if it remains exactly horizontal wings will suffer from a lack of attack angle resulting in loss of lift leading to an unrecoverable tail stall. Planes can't fly fully horizontally at low speeds and even when they reach cruise speed they have a slightly positive angle of attack.

Vor Monat
Mickey McNaughton
Mickey McNaughton

I have heard that there are a few exceptions where the takeoff roll can be discontinued after V1 but that they are most rare. It is suggested that aborting after V1 does not mean that a runway overrun will occur and it seems to relate more to ground controllability. Also, it's my understanding that, these days, the V2 (takeoff safety, best ROC, safe obstacle clearance speed, one engine inop) call is rarely used because it is simply observed as an indicative bugged speed requiring no specific critical decision to be made other than to recognize the speed for what it is. Perhaps I may be in error here. If so, please correct me :-)

Vor Monat
Mickey McNaughton
Mickey McNaughton

​@ZK-APA Appreciate the feedback ZK-APA. Cheers.

Vor Monat
ZK-APA
ZK-APA

Yup a PIC can abort after V1 IF he/she thinks that a safe flight cannot be maintained if they continue the take off. Though these are very extreme cases where its obvious that the aircraft should not get airborne (so basically choosing a lesser evil)

Vor Monat
Geoffrey Hansen
Geoffrey Hansen

I once read in a book that V1 was considered to be the point of no return.

Vor Monat
starguy2718
starguy2718

"Captain" Joe, but you only have 3 stripes, and not 4, which captains wear.

Vor Monat
Michael B
Michael B

I never heard of these V speeds until I started watching these heavy drama YT shows. Explain the stuff that’s really important, like Vy, Vx, Va, Vfe, Vne … getting those wrong may result in rapid unplanned disassembly of you and your aircraft ;)

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Jon Brahms
Jon Brahms

5:06 -Screen height. Which part of the plane is this height measured to? This height obviously depends on what part of the plane one is measuring to.

Vor Monat
Jon Brahms
Jon Brahms

Why is it called Vlof? Shouldn't it be called Vlos (Lift off Speed)?

Vor Monat
Michael Post
Michael Post

It seems that with a very long runway, and/or a smaller plane, that V1 may be irrelevant or would be after VR or V2. If there is plenty of runway for stopping the plane even after VR, is V1 used just as standard procedure?

Vor Monat
ZK-APA
ZK-APA

In that case, max V1 will be equal to VR

Vor Monat
Denis McClean
Denis McClean

Just one small point about V1. It can also be the same as VR on a long runway, when the airplane has plenty of distance remaining in whiuch it can be brought to a full stop.

Vor Monat
Ima Paine-diaz
Ima Paine-diaz

I know several accident investigations where all went well for V1 and VR, but the the aircraft couldn't maintain V2 and the aircraft mushed into the ground after achieving minimum screen height, sometimes in a spin! I wonder what could cause such a non recoverable situation?

Vor Monat

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