Questions tagged [takeoff]

Takeoff is the first phase of flight, when an aircraft lifts off from the runway or other surface.

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Does acceleration increase linearly on a takeoff roll?

I'm a relative novice when it comes to aircraft performance and was wondering if someone could both answer the following and maybe direct me to some good source material. If I wanted to model a take-...
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What is the most carbon-efficient way to take off in a passenger plane?

Consider two possible flight paths for a jet passenger plane; the first is a slow climb, held low over 20 or so miles to avoid other flight paths, the second a more rapid climb over 10 miles to the ...
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How much lift do planes produce before rotation?

In the takeoff roll, I'm pretty sure planes produce some lift before rotation, but how much? Is it insignificant compared to post-rotation, or is it large compared to the post-rotation lift?
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Can a 747 land at Ovda?

Since Ben Gurion International Airport is closed, flights are being directed to Ovda, with a 3000 meter / 9,843 foot runway. Can large passenger jets, such as the Boeing 747, land at such an airport? ...
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How comes lift is less than weight on take-off? [duplicate]

If $$lift=weight * cos(angle)$$ this means that lift is less than weight during takeoff. Could someone please explain me why it is so
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What are the meanings of various reference lines and sections in a take-off distance graph?

I am trying to solve a numerical problem related to determining take-off roll using a take-off distance graph. The parameters are Temp: 90F, Press. alt: 2000ft, wt: 2500lbs, headwind: 20 Knots. I got ...
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Why circle an airport after takeoff? (SLC particularly)

I left SLC (Salt Lake City) this morning heading to MCO (Orlando). On previous flights, I remember takeoff similar to other airports. We got in the air, gained altitude, and moved to our heading and ...
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What do you call the portion of a tail-dragger takeoff when the tail is in the air?

During a take-off roll out down the runway, in a tail-dragger airplane, what is the period of time called where the plane is level, with the main gear still on the runway, but the tail has come up off ...
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What causes aircraft to swerve during takeoff?

I notice on some commercial flights that the aircraft can begin to swerve left-to-right during takeoff before we leave the ground. Sometimes this can become very exaggerated, very hard left-to-right ...
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In a 747 is it normal for the Vr (takeoff speed) to vary greatly depending on fuel load and ambient temperature?

I was reading one of the documents linked on this question, particularly I was reading case study number 8 of this particular document. In the conclusion the author notes that the aircraft flight ...
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Is it legal and safe to take off or land in zero visibility?

Is it legal for planes to takeoff and land in zero visibility? Is it safe?
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When is runway slope most important?

Based on this other answer, a new question arose. When is runway slope most important, at take-off or at landing? Or is it equally important in both flight phases?
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What is the rule of thumb for land/taking-off on a sloped runway?

Skyvector lists the gradient for KMCI as 0.3%. What is the rule of thumb for how large a gradient needs to be before you always take off downhill and always land uphill like they do at Lukla? Assume ...
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Why was this Twin-Otter Take-Off unsuccessful?

Watching this video I was asking myself, what was the error or cause of this unsuccessful take-off?
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During which part of the flight the effect of air resistance is more important?

Her teacher asked this question to my niece (8 years old)? However I couldn't find a solid answer either. In which part of the flight, the effect of the air resistance (drag) is more important? ...
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Does an aircraft's nose landing gear extend on take off?

Something I noticed while flying - while on takeoff it feels as if the plane is tilting upwards even though the plane is clearly still on the ground with all sets of landing gear. Does the nose gear ...
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Why was a complete test flight of Hughes Hercules H-4 (Spruce Goose) never undertaken?

I get that ,the max altitude it was flown to was 70 ft. after its 3rd test taxi.I also am aware that even this was done to prove a point. But,why was there no attempt later on to complete a test ...
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During a takeoff emergency, is it safer to abort or continue the takeoff if either can be done within the available runway?

In a multi-engine airplane, if an engine failure occurs at the exact moment that a decision needs to be made to reject or continue the takeoff, and there is plenty of runway available to do either, ...
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When do I need a takeoff alternate?

Under what conditions do I need to have a takeoff alternate airport listed on a dispatch release? How far away can my takeoff alternate airport be? Do I need to worry about this in part 91 ...
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What are the V-Speeds used during a normal takeoff in a multi-engine airplane?

This is what I know: $V_1$ is the takeoff airspeed after which the aircraft must take off, no matter what happens after $V_1$ has been reached. That's the easy part (I think). $V_R$ is the rotation ...
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Can any aircraft take off using auto-pilot? [duplicate]

So there are some types of aircraft that can land under auto-pilot (or is that a trope?). Can those same planes go from stop (at the gate) to in-the-air flight without a pilot actually touching a ...
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How does autobrake work?

An autobrake is a type of automatic wheel-based hydraulic brake system for advanced airplanes. The autobrake is normally enabled during takeoff and landing procedures, when the aircraft's longitudinal ...
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Why don't airliners use full throttle on takeoff? [duplicate]

It seems that you would use full power for takeoffs, but when I have heard of airline pilots using less than full power on takeooff. Wouldn't it be safer to use full throttle?
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Are rolling takeoffs now more common than powering up while holding on the brakes?

I remember back in the 90's that commercial planes would line up on the runway, stop, apply full power and then release the brake to take off. Now I've been on flight where they've literally rolled ...

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