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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7
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2answers
3k views

How often are slats used on airliners?

Are slats only used when there is a short runway or on all occasions?
7
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1answer
3k views

What degree of elevator deflection is required to takeoff?

I've always wondered how much the elevator actually needs to deflect in order to cause rotation on takeoff for a large airliner. On videos I can rarely see the elevator moving at all. I'd really ...
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2answers
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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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4answers
8k views

What happens during a carrier take off?

Watching videos of jets taking off from a carrier, it appears the pilot is holding a hand grip as the jet is catapulted along the deck; then there is 'jerk' type motion as the jet leaves the deck with ...
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2answers
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How do runway declared distances affect my takeoff distance?

See these questions. What is balanced field length? What are runway declared distances? My multi-engine jet airplane uses a balanced field length concept. Most airports served by airliners have ...
76
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6answers
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Why does the B-52 take off without rotating?

In the answer to this question it is noted that the B-52 takes off without rotating and climbs out in a nose-down attitude. Why was it designed this way?
37
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2answers
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What do jet pilots say during the takeoff as they are speeding down the runway?

I was watching a documentary on youtube and the pilots always say something that sounds like "B1E" when they have enough speed to take off. What exactly are they saying, and why do they say it?
19
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3answers
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What is a take off roll?

Reading about 737-900ER take off roll (3000 meters) from another question, I would like to know what this means. Is it intended that the aircraft needs 3000 meters before it can pitch up to take off ...
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3answers
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Why would pilots "call the company" after an aborted takeoff?

I was skimming through the RealATC videos on YouTube today and watched this one. In it there are two flights taking off from Chicago-Midway (KMDW); Delta flight DAL1328/DL1328 and SouthWest's SWA3828/...
14
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3answers
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Why must Vr be set so precisely?

Why must VR (Rotation Speed) be set so precisely? I mean why can't they just say: Rotate the Aircraft at 120 to 150 knots And then, the pilot thinks: OK, I have a full plane and half full tanks,...
11
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6answers
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What will be the immediate action by the pilot and ATC if any plane blocks the runway while landing?

Suppose, if the Airport has only one runway and one plane is trying to take off at the end of the runway and other plane trying to land from the other end of the runway. Due to any reason if the ...
10
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2answers
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Why is "clearway minus stopway" used in V1 adjustments?

Illustrations and/or satellite imagery to explain the difference between clearway and stopway and explaining how they are used by turbine aircraft would be great. From B787 FCOM.
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4answers
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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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3answers
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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 ...
39
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9answers
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Why don't short runways use ramps for takeoff?

Say you had a runway for light aircraft, but only 700 meters or so of runway. Wouldn't it help to end the runway with a ramp that is ~40 meters above ground and slightly facing the sky at a gradient ...
36
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2answers
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Is an Airbus A319 allowed to fly with a missing flap track fairing?

During a recent flight from Copenhagen to Milan in an Airbus A319, one of the flap track fairings were missing from the wing. I saw this during takeoff, and notified a flight attendent as soon as the "...
28
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3answers
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Why do I get that funny stomach drop feeling right after takeoff?

Right after take off 1-2 minutes into flight I get this stomach drop "roller coaster" feeling for split second. It freaks people out thinking they are about to crash! Why is that??
22
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3answers
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What is this smoke coming from an F/A-18 shortly before takeoff?

Watching a video of F/A-18 fighter-jets taking off, I noticed some sort of gas blowing out behind the canopy shortly before the start of the takeoff roll. Here's a screenshot: In some videos the ...
20
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1answer
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Why do flaperons 'move down then up' on takeoff roll on a 787?

The flaperons on the 787 go through certain motions once the TO/GA is pressed. I've always seen it when the 787 is viewed from behind on takeoff. The motions are completely symmetrical, i.e., not ...
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8answers
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If flaps are used on takeoff, when should they be retracted?

If a pilot uses a notch of flaps on takeoff, when do they get retracted? At that time, what changes (i.e. climb rate, speed, pitch)? NOTE: I have purposefully not specified the type of airplane.
17
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3answers
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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 ...
16
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3answers
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How do pilots set the exact amount of thrust needed for a reduced power takeoff?

I know jet-powered airplanes very rarely use 100% available power for takeoff, and most often reduce power to increase engine life. How does a pilot set thrust to an exact level? The airplanes I'm ...
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4answers
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Are glider winch launches rarer in the USA than in the rest of the world? Why?

I had heard before that winch-launching gliders was a relatively rare practice in the USA, while quite common in the rest of the world. My data is mostly anecdotal, but I do know gliding clubs in ...
15
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1answer
11k views

Is it normal to take off with limited flaps on a B737?

Is it safe/normal to take off (fully loaded from Cyprus to Kenya - 6 hours) with very small flaps extended? Model of aircraft: Boeing 737-800. He used whole length of the airfield to take off, the ...
10
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1answer
1k views

Why isn't the An-72 / Boeing YC-14 configuration used for airliners?

Why aren't there a lot of passenger airliners (short flights) using this configuration, since using Coanda effect by blowing wing's extrados is much safer in harsh weather, and would provide extra ...
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2answers
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Is there a maximum airfield elevation in which a Cessna 172P can operate?

The title says it all: is there a maximum airfield elevation in which a Cessna 172P can operate? Or a maximum density altitude at which take off shouldn't be considered?
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1answer
300 views

What are the equations to compute takeoff and landing distance?

I am flying a Piper 28-336 Dakota. Based on this paper I was able to reproduce the take-off distances from the POH and incorporate the calculations directly in Excel. It can be seen that the effects ...
25
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3answers
6k views

What are the effects of a rejected takeoff?

When a pilot is abandoning a take-off, what are the effects on the aircraft performance? Can a pilot vacate the runway normally or is extra time on the runway needed? Is immediate assistance provided ...
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3answers
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Where does the 35 feet screen height come from?

When taking off, why are we required to climb at least 35 feet over the departure end of runway? Why not other numbers? This comes from the FAA regulations. I believe there must a clear explanation ...
16
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2answers
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How does a taildragger take off? Does it rotate?

All the planes I've ever seen taking off (big airliners) first lift the small front wheel from the ground, then rotate and ultimately lift up. If the small wheel is on the tail instead, in which ...
14
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3answers
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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 ...
11
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2answers
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In parallel runway ops, is it better to dedicate a single runway to landings, or is it best to have a mix?

Assuming taxiing is not a consideration, in an airport with two parallel runways does the airport gain capacity by: having a single runway dedicated for landings and the other for take-offs, or is it ...
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3answers
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How do pilots detect and respond to windshear while landing and taking off?

How does wind shear affect aircraft while landing and taking off? How do pilots detect that they are encountering wind shear and what would they have to do to prevent it from turning into a bad ...
9
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3answers
18k views

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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3answers
3k views

How much rudder input does a Cessna 172 require during the take off roll?

I am part of an open-source project developing a simulation of a Cessna 172P. We are tweaking our flight dynamic model at the moment and we are looking for feedback from people with real life ...
8
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3answers
2k views

What is the cause of tire marks at the extreme ends of runways?

At LAX, planes (usually) take off from east to west. On the west end of the runways there are dark tire marks. What is the cause of thesey tire marks? Failed take offs? Late landings? Something else? ...
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3answers
1k views

What effect does a direct crosswind have on takeoff performance?

Is the take-off distance increased by a direct crosswind?
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3answers
3k views

What would happen if one of the engines failed during takeoff and other engine is on full power?

Assume the left engine failed and the right engine is at full power. The pilot has pulled his nose up and turned towards left. Is it possible for him to land the plane on a runway to his left? The ...
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4answers
1k views

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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1answer
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How to interpret the term "standard" which is found in FAA's Obstacle Departure Procedures (ODP) and Standard Instrument Departure Procedures (SID)?

This might be obvious, but I find it difficult to interpret correctly the term "standard", when it refers to the takeoff phase of the flight. Take, for example, the takeoff minimums for the La ...
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4answers
1k views

Why is this video of a G36 Bonanza taking off so scary?

Why is this video of a G36 Bonanza so 'scary'? If they had clipped the top of the trees, would it really have brought the plane down? (And even if yes, it looks pretty ...
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3answers
15k views

What are the climb rates during the different phases of flight of an A320?

I have read about common climb rates for an A320. It is said that the initial climb rate for an A320 is between 15-20° and it differs depending on the weight and also the altitude. I therefore have ...
16
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3answers
7k views

Is it legal to takeoff in a crosswind that exceeds the design limit of my aircraft?

Suppose the max crosswind rated for my C-182 is 15kts, but the wind is directly across and gusting to 20kts. Is it legal for me to go? I've heard plenty hangar flying stories of many an operation ...
16
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1answer
3k views

Why is a 0 kt, vertical climb in a helicopter not safe near the ground?

In the "Test Pilot" column in the July 2017 issue of AOPA Pilot, one of the questions was From reader David Franklin: If a given helicopter has a best rate-of-climb airspeed of 60 knots, its ...
14
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2answers
7k views

What happens if an engine fails between V1 and V2?

What happens if an engine fails between V1 and V2 on a modern twin airliner? As I understand it, at V1 you have enough runway remaining to safely stop and abort the takeoff. V2 is the lowest single ...
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2answers
3k views

How did the Wright plane takeoff/land?

I don't understand exactly how the Wright brothers handled takeoff with the first gliders and powered plane. I know it has something to do with an elevated rail track. Also, if the flying position was ...
11
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3answers
2k views

Why did this 737 not take off on first attempt?

This video shows a 737 'near miss' takeoff. I'm curious as to why the aircraft did not take off as expected, i.e. is there anything obvious from the video? I'm ...
10
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2answers
2k views

Why is the IFE only available after take-off and shut off before landing?

Every time I fly in an airplane that has an In-Flight Entertainment System (IFE) that consists of screens embedded in every passenger seat it is only turned on a few minutes after take-off and turned ...
9
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2answers
4k views

Why would aircraft take-off in the opposite direction as landing despite wind direction?

I have visited and flown out of Harare International Airport, Zimbabwe a number of times and the thing that always baffles me is: Why do aircraft use runway 23 to depart, but runway 05 to land? At ...
9
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2answers
3k views

What are the disadvantages for using short-field take-off technique?

It is obvious that using the short runway takeoff method(hold the brake till engine get full power) could get the aircraft in air within a shorter runway distance.Then why it is not used for every ...