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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2answers
784 views

How much thrust is produced on an A320 at takeoff and during cruise?

Where can you get the drag polar of the A320 at cruise and TakeOff?
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657 views

Is "takeoff distance" measured over the ground, or to a point in the air?

I read that takeoff distance was the distance for which the airplane is on the runway, as well as the distance for which it ascends to 15 meters off of the ground. Does it get measured as the ...
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How does the location of the undercarriage affect 'Nosing Over'?

"The location of the undercarriage and the height from the ground of the aircraft’s centre of gravity have a very important role in the design of aircraft. In the case of a “tricycle ...
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1answer
585 views

Are aircraft pilots required to fly runway heading for a certain distance?

If an aircraft rotates off the runway relatively quickly (runway mid-point for example), do pilots need to continue on the runway heading for a minimum distance before turning based on departure ...
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1answer
92 views

How to use a set of Pressure Transducer to mimic pitot static tube for VTOL vertical airspeed indicator?

May i know if i have 3 pressure transducer, 1 facing upwards and the other downwards to measure the vertical velocity of a VTOL (Vertical Takeoff and Landing aircraft) and another 1 on the nose of the ...
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1answer
76 views

Will a quad fan arrangement on an aircraft help with pitching moments during VTOL flight transition?

The phenomena of ducted fan assemblies inducing pitching moments whilst in transition from vertical to horizontal flight paths is a problem I have seen mentioned by many designers and engineers of ...
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2k views

Could an airliner abort a landing after using the brakes system while landing?

Everyone knows that doing a go-around is a normal procedure, although the go-around happens usually before applying the brakes system (spoilers, ground/air brakes, and/or thrust reversers), but, could ...
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3answers
887 views

Do all single-engined aircraft experience torque that cause a turning tendency during the takeoff roll?

I've been flying the Cirrus Vision SF-50 for quite some time on my X-plane 11. Having a single turbofan engine mounted near the V-tail, I expected the requirement of at least a little right rudder. ...
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1answer
389 views

What is takeoff power? [duplicate]

I Am asking about the takeoff power here not how the aircraft takes off. What do I need if I want to calculate the power required by an aircraft to take off? What parameters should I consider?
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Why can't you operate packs on HIGH during take-off, approach and landing on a 737-800?

It's in the FCOM Limitations Chapter and I think that these phases are critical phases of flight and I don't want to reduce my engine performance by purposely creating a high demand for bleed air from ...
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1answer
284 views

What runway has the steepest climb requirement on take-off?

What runway has the steepest climb-out requirement upon take off? This would probably be due to the need to avoid some natural obstacle, such as a mountain.
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160 views

Could a plane take-off at 20,000 feet above sea level if the temperature is above freezing?

I’ve read that “humans have survived for two years at 5,950 m (19,520 ft, 475 millibars of atmospheric pressure), which is the highest recorded permanently tolerable altitude” and that “Daulat Beg ...
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3answers
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Can any modern commercial airliner currently in service take off vertically? [duplicate]

I saw a video of a Boeing 787 taking off 'vertically' at the Paris Air Show. How is that even possible? It was to my prior knowledge that only fighter jets had the capability and maneuverability to ...
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2answers
848 views

Is "balanced field" defined with or without an engine failure?

I’m wondering what exactly means a balanced field in terms of aircraft performance. From what I know it means that TODR=ASDR, also it is minimum field length required. But I do not know whether this ...
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What is the name of the movement which is carried out by plane beginning from the runway and ending at takeoff?

What is the name of the movement which begins after the plane lines up on the runway and takeoff clearance is received, and ends when the plane lifts off from the runway? Is it also called as 'taxiing'...
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How do I use the takeoff and landing distance charts in the C172 POH?

Can anyone explain how to calculate takeoff and landing distances using the chart for C172s, and please give me an example?
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1answer
565 views

Does an airplane has to take off from beginning of the runway or it can take off from displaced threshold?

I mean, if the airports declared that there is a displaced threshold of runway ; and airplanes use this length for landing but how about for takeoff?
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2answers
234 views

Are intersection takeoffs less common in the USA than in other countries?

On a recent trip through Australia I did a number of intra-oz flights. In at least three of the cases we performed intersection takeoffs, a couple at MEL/YMML and one at BNE/YBBN. I have at least a ...
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1answer
487 views

Why does the 737NG EGT drop during take-off?

I noticed that the EGT drops a bit when I hit TO/GA for take-off on a 737-800.
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RATO used to get civilian aircraft out of airports with inadequate runway length?

There are plenty of stories of large aircraft accidentally, or emergently, landing at airports that don't meet the plane's runway length requirements. The only solution to getting them out that I've ...
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5answers
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Why did my flight climb so sharply on takeoff?

I was on a Ryanair flight this morning that seemed to perform an incredibly aggressive takeoff from London Stansted on a 737-8. Takeoff was fairly fast, but the climb was the steepest I ever ...
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2answers
399 views

How does the Mi-26 tilt its rotor like this?

I watched this video on YouTube, which shows an Mi-26 taking off with its rotor tilted forward about 45 degrees. Is the video fake or is it real, and if it is real, how does the Mi-26 do such a thing?
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1answer
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How does the Airbus auto takeoff system work?

Can you explain in a easy way, how the auto take off system of Airbus works? What is needed on a modern aircraft to perform the take off without help by a pilot?
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296 views

How do airports in hot climates handle extremely high temperatures?

In June 2017 dozens of flights were cancelled in Phoenix, Arizona because of temperatures exceeding 120 degrees Fahrenheit/48.9 degrees Celsius.1,2 Hot air at a given air pressure is less dense, ...
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1answer
145 views

Derivation of the Takeoff equation

I am trying to understand the derivation of some simple equations to calculate the neccecary takeoff speed for an airplane (under ideal conditions). Which is taken from 15. Takeoff and Landing. My ...
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1answer
522 views

How much actual difference does fixed pitch propeller make in takeoff distance?

So it's possible to buy fixed pitch propellers which are either optimised for takeoff or for top speed. I guess most airplanes have a compromise. Considering a training aircraft like a Cessna 152, ...
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3answers
2k views

Has the "Foote takeoff" technique really existed, and how did it work?

Reading The Crash Detectives: Investigating the World's Most Mysterious Air Disasters by Christine Negron, I came across the following description, in relation to some early de Havilland Comet ...
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1answer
106 views

Launch control equivalent while take-off

What is the proper term used when the plane is stopped and the engine is ramped up and after a certain thrust is reached, it suddenly starts off with a jerk.
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7answers
2k views

Is lowering V1/VR (and runway length required) the only reason for flaps at take off?

I've read that some aircraft (examples include the Saab 340 and the Fokker 100) can perform flapless take offs, provided there is enough runway available. It's also my understanding that, in terms of ...
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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 ...
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4answers
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Why does the Eurofighter Typhoon pitch up on brake release?

In the video here of an airshow take-off, it's noticeable that when the brakes are released there's a brief but pronounced fluctuation in pitch as the aircraft accelerates. This is something you see ...
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4answers
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How to use Rudder during takeoff in single engine propeller aircraft? e.g. Cessna 172

Background: I am a complete beginner on Flight Simulator X: Steam edition, using a simulator setup with rudder pedals with realism set to the max (to simulate more realistic flying). I understand ...
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1answer
429 views

What Is a "Fully Stalled" takeoff?

Reading this article (on the Boeing 737 MAX saga; irrelevant), I found the following excerpt: Boeing ultimately accepted Davies recommendation and, we understand, halted production of the 707 for ...
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3answers
531 views

What is an airliner pilot's first go-to if he or she doesn’t have a positive climb rate immediately after take off?

Assuming a typical transport-class aircraft, what would the pilot do if the aircraft does not have a positive rate of climb immediately after takeoff? Would the pilot just lower the nose to pick up ...
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10answers
9k views

Has someone with no experience at all ever taken off in a plane? Could they?

I was watching Mystery Science Theater 3000 and their showing of 1970 TV movie/pilot San Fransisco International. One of the plots in the movie involves a twelve (or so) year old boy, who, alarmed ...
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1answer
284 views

Where and when would a 737-700 be taking off at an altitude of 19 kft?

Another question triggered by reading the 737 technical site; according to this section of the page on the 737's pressurisation system, the 737-700 comes with an option that allows it to safely take ...
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1answer
107 views

How does density altitude affect Taxi-Out Time?

To keep things brief, for a data exploration project, I calculated density altitude for a couple airports and used flight statistics from https://www.transtats.bts.gov/ONTIME/Departures.aspx. I was ...
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592 views

What is a Second Segment Weight Limit?

I am very interested in the principles of take-off performance optimization. During my research I found an interesting picture, showing the software used by a European carrier. However, the output ...
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2answers
750 views

When a B-2 takes off, does it use some device to ionise the airflow in front it?

At takeoff, does the B-2 use some sort of ionization device in the leading edges of its wings?
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1answer
520 views

What are the take-off parameters for the B-25 Mitchell?

What is the take-off distance and speed in standard atmosphere (59°F, 29.92 inHg, 0% humidity) for the B-25 Mitchell with max, minimum, or average payload?
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Can the assumed temperature be lower than the flat rated temperature?

I was playing with reduced takeoff thrust in a Boeing 737-800 simulator yesterday and was surprised that I could enter assumed temperatures below the flat rated temperature of the engines. The ...
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1answer
1k views

What is the average climb gradient of an aircraft during the takeoff and early phase of a departure procedure?

On chart plates it is written the minimum climb gradient with which an aircraft should climb for obstacle clearance or after ATC request (for traffic flow management etc.). However, since this is the ...
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6answers
4k views

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 ...
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2answers
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What would be the challenges to taking off and landing a typical passenger jet at FL300?

Suppose it was somehow possible build a runway at FL300. Yes, doing so would be incredibly expensive, and it would be a mammoth civil engineering task, and the downsides would probably by far outweigh ...
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Would building an airport at 30,000 ft save money?

So... this would obviously cost a ton of money initially, but long-term, I believe the savings both environmentally and financially would be returned many times over. If a building can already be ...
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4answers
399 views

What does 'laterally aligned' mean in this description?

In the Airplane Flying Handbook there is a section on crosswind takeoffs that mostly makes sense. However, this paragraph confuses me. Takeoff Roll As the forward speed of the airplane ...
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2answers
721 views

How does humidity's effects on density altitude get factored into Takeoff Distance Performance Charts?

Given that density altitude is a function of Pressure, Temperature, and Humidity, and most takeoff performance charts adjust takeoff distance as a function of pressure altitude and temperature, how is ...
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1answer
796 views

Can a Bombardier CRJ derate the takeoff thrust?

I have recently been flying a Bombardier CRJ 700 in a simulator and wondered how to derate the engines for takeoff. I know how the takeoff thrust derating is selected in Airbus and modern Boeing ...
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2answers
902 views

How will a variable pitch propeller move during takeoff?

In my ATPL books i've learned that for a variable pitch propeller, it is better to have a fine pitch for take-off (higher RPM) and a coarse pitch for cruise (lower RPM). In this question taken from ...
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1answer
539 views

Has an earthquake ever complicated or prevented a safe landing/takeoff?

This question on being able to see ground effects of earthquakes from the air got me wondering: No doubt a severe earthquake at the wrong time could hinder even experienced pilots, but I expect a ...

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