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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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How can the wing generate more lift than the thrust? [duplicate]

I recently checked about the max takeoff weight of an A380 and the thrust it can provide at TO/GA power and I was quite shocked by the results. The total thrust by the engines was only about 127000 ...
Sambhav Khandelwal's user avatar
1 vote
2 answers
573 views

AirBus A380 and Boeing 747 - fuel consumption while taking off?

I have talked with my friends about fuel consumption while taking off. None of us know much about airplanes, so I'm asking here, because I didn't find an answer searching on the internet. How much ...
JanezKranjski's user avatar
8 votes
2 answers
3k views

Could a VTOL aircraft use a helipad for landing/taking off?

In more recent years, VTOL (Vertical Take-Off & Landing) aircraft have become fairly popular and are used in some notable air forces (such as the USA and the UK). I was wondering if these aircraft ...
Jordan Stephan's user avatar
3 votes
1 answer
138 views

Are declared distances absolute or just for reference?

I spent a few hours checking some threads and articles on the topic in question and I would like confirmation from you: according to the AIM FAA manuals which state: 4-3-6(c)(2)(c) When considering ...
giggi10's user avatar
  • 31
2 votes
3 answers
155 views

Helicopter attitude during take-off and landing (wheels, not skids)

Helicopters with wheels can take-off and land in a level or nose-up attitude (nose wheel off with main wheels on the ground). For example, the pilot of a VIP helicopter might want to take-off in a ...
user9251544's user avatar
2 votes
0 answers
74 views

Circle just after takoff EWR to EWY

Any idea why this commercial flight (UA1822) would circle as seen in the picture after takeoff at Newark and heading to Key West Int.
Greg Kappmeier's user avatar
11 votes
1 answer
3k views

May two airplanes wait on the same runway at the same time?

In a normal situation, the controller doesn't authorize aircraft to simultaneously line up and wait on the same runway. However, if two aircraft call the tower ready for departure, one at the full ...
iop0453's user avatar
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1 vote
1 answer
312 views

What is the difference between gross weight and MTOW in an aircraft specification?

On Wikipedia you often find aircraft specified with a separate "gross weight" and "MTOW". The term "gross weight" implies "weight with maximum fuel and payload"....
Abdullah is not an Amalekite's user avatar
0 votes
0 answers
92 views

Does the following sound realistic as callouts during takeoff?

“Set power.” “Power is set.” “80 knots.” “Check.” “Constant power.” “V1.” “Rotate.” “V2.” “Positive rate.” “Gear up.” I am unsure about "Constant power." The original text I am translating ...
Pearl6527's user avatar
  • 373
0 votes
1 answer
131 views

EOSID - Adhere to at or soon after V1?

Most airports have an Engine Out Standard Instrument Departure (EOSID) statement similar to this on their charts: For EOSIDs, the take-off performance for "ABC Airport" is based on the ...
shogunnyan's user avatar
2 votes
1 answer
813 views

Why does the climb angle of 737-800 peak shortly after take-off before reducing again?

I am doing a report on 737-800 and I have questions about its climb angle performance; I am plotting a climb angle VS altitude graph for the aircraft, why does the climb angle take off at an angle and ...
user65712's user avatar
7 votes
2 answers
807 views

Why does the taxiway parallel to Runway 18 at Frankfurt Airport exist?

I was looking at these two questions about the single direction takeoff-only runway 18 at Frankfurt Airport (EDDF) when I noticed that it has a full-length taxiway (taxiway Y5) to its east. As far as ...
331821's user avatar
  • 133
1 vote
0 answers
183 views

Is my understanding about Balanced Field correct?

We have two definitions: Balanced Field where Takeoff Distance Required = Accelerated Stop Distance Required Balanced V1 = This is the speed where on a balanced field length (TODR=ASDR) if we have ...
Breaach's user avatar
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0 answers
171 views

Why is the minimum climb gradient for V2 Speeds lower than the minimum standard SID climb gradient?

If you look at the standard Net Take-off flight path, the speed an "airliner" should achieve at the screen height is the V2 speed, a speed that ensures a minimum climb gradient in case of an ...
Ted Staggs's user avatar
0 votes
1 answer
203 views

What would happen if both engines of a twinjet cut out at or immediately after V1? [duplicate]

Disclaimer: Not a pilot or an aviation guy, just someone who's flown on planes before. So, yeah. Assume A and B are the PIC and copilot, respectively, of a twin-jet plane (doesn't matter which one). B ...
SilverCrown's user avatar
11 votes
1 answer
4k views

When, if any case, can it be considered justifiable to reject a takeoff after V1 speed, if the aircraft is incapable of taking off?

Not a pilot, but I've been a passenger before and I'm writing a sci-fi book trying to use realistic aviation terms (so ignore my use of slang and acronyms here). I understand that V1 is when you have ...
SilverCrown's user avatar
26 votes
2 answers
8k views

How can Ural Airlines fly an A320 from an unpaved field after an emergency landing?

Ural Airlines flight 1383 had to land in a field due to hydraulic problems and fuel shortage. The airline does not scrap it, but is repairing (source) and is going to fly it. A320 landing gear is not ...
culebrón's user avatar
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12 votes
2 answers
3k views

How should you deal with passenger throttle interference just after take-off?

I took a passenger on a flight recently in a C42, in which the throttle is placed between the legs. Shortly after take-off (I'm talking 100ft in the air at full throttle), the passenger tucked his ...
Cloud's user avatar
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3 votes
2 answers
362 views

Should you line-up the runway 90 degrees or follow the yellow marking?

I had a discussion with somebody recently. I prefer to do a 90 degree line-up on the runway, ensuring max take-off run available. (in GA airplanes...) However, somebody pointed out that one should ...
Ted Staggs's user avatar
4 votes
2 answers
3k views

Help me understand the A220-100 takeoff chart

Here is the takeoff performance chart of the Airbus A220 (CS100). According to Wikipedia, the MTOW runway length needed is 1500 metres. However, this chart seems to suggest that a runway length of ...
Knathuul's user avatar
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8 votes
4 answers
4k views

Can you weld a propeller blade from 120 degrees to 180?

My uncle flew for Mission Aviation Fellowship (maf.org) for a university in Texas, and I believe that he was flying a Cessna to the Amazon (among other places). He actually knew Jim Elliot (who went ...
MicroservicesOnDDD's user avatar
6 votes
2 answers
349 views

When does taxiing become taking off?

When there is a relocated runway threshold, the PHAK says: When the threshold is relocated, the closed portion of the runway is not available for use by aircraft for takeoff or landing, but it is ...
Chris's user avatar
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10 votes
1 answer
2k views

How common is it to take off from a taxiway?

This question reminded me of a time when I landed my spamcan at a former WWII RAF base (middle of nowhere, no ATC, no-one in the clubhouse) that had a part concrete/part grass runway, a farmer came ...
Dave Gremlin's user avatar
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5 votes
2 answers
701 views

Can I takeoff as VFR from class G with 2sm vis. even if that's IFR in the categorical outlooks?

Weather minimums for class G during the day (below 1200'AGL) are 1SM vis. and clear of clouds. The categorical outlook (AIM 7-1-7) for IFR is 1sm to 3sm visibility and a ceiling of 500'AGL to 1000'AGL....
n00b's user avatar
  • 155
15 votes
5 answers
14k views

Why wouldn't a plane start its take-off run from the very beginning of the runway to keep the option to utilize the full runway if necessary?

I was just watching BSL/LFSB on Flightradar24 and noticed that flight W67772 didn't start its take-off run from the end of the runway. Wouldn't it make sense to start every take-off from the end to ...
Spammer's user avatar
  • 151
0 votes
1 answer
570 views

Can you take off from a country road in a ultralight aircraft?

Can I take off from a country road in a ultralight aircraft (In the USA). I have seen resources online saying yes and no. Does it vary from state to state?
Pink Pit's user avatar
2 votes
1 answer
322 views

What's the effect of density altitude on take-off speed and acceleration?

For the EASA PPL(A)-exam I got the following question: An increased density altitude has the following effect: Increased take-off speed and decreased acceleration Decreased take-off speed and ...
MathMan's user avatar
  • 123
0 votes
0 answers
102 views

How to determine thrust and power requirements from take-off ground roll distance?

I'm working on a project which requires me to determine the power requirements of a propulsion system from a specific take-off distance. Starting with this equation: $$ s_g\approx \frac{1.21(W/S)}{...
Abu Sinan's user avatar
8 votes
1 answer
824 views

Why are bridles no longer used on carriers?

So, back in the day a lot of carriers had a "bridle" fitted onto the catapult. This was basically a V-shaped cable that attached to two points on the underside of a plane and would basically ...
BryBuriya's user avatar
  • 307
2 votes
1 answer
407 views

Do the trim wheels on the Boeing 737NG move by themselves during the takeoff roll?

After the stab trim is set before take off, will it move by itself during the take off roll? If yes, why? Where can I find the reference?
Nick A.'s user avatar
  • 21
0 votes
2 answers
320 views

Short Take Off and Landing, and Range

Can a plane have good range with a short take-off and landing (STOL) capability? If not, why. I have noticed STOL planes with lack the better good seat miles per gallon of planes that need longer ...
Justintimeforfun's user avatar
-2 votes
1 answer
69 views

Where to find generic weight take off charts for planes?

Where can I find a generic weight take off chart for planes? I looked online but maybe I'm not looking in the right place? Related: How do I use the takeoff and landing distance charts in the C172 POH?...
Justintimeforfun's user avatar
11 votes
5 answers
3k views

Buzz-saw noise from big turbofans at high thrust

This topic has been addressed many times on this and other forums. I have seen (and often not fully understood) some deep technical analyses, incuding manufacturers' research labs, since this is a ...
cTen's user avatar
  • 111
0 votes
0 answers
167 views

How to calculate take-off and landing distances for a light plane?

I cannot find a generic takeoff chart for the 850 lbs BD-5B Micro-plane. How can I find, generate, or calculate the takeoff and landing distances needed? I did find this chart below and included the ...
Justintimeforfun's user avatar
10 votes
6 answers
4k views

Has a commercial aircraft ever taken off with its landing gear up?

In the extremely scientifically accurate movie Airplane the Autopilot takes off with the gear up. Has this ever happened? Could any commercial or 4+ passenger GA aircraft do this, say with a 1%+ ...
Nate Lowry's user avatar
19 votes
1 answer
2k views

Why do helicopters experience a brief dip in altitude during IGE marginal power takeoffs?

The scenario is this: A helicopter is hovering IGE, and executes a marginal power takeoff. What causes the dip in altitude that occurs around 10 knots during the takeoff? Most pilots seem to describe ...
theredlabcoat's user avatar
1 vote
1 answer
2k views

What is considered a positive rate?

I'm a beginner pilot, and i am trying to perfect my takeoff. What vertical speed is considered a positive rate in a Boeing 747? Thanks in Advance
JoshThePilot's user avatar
4 votes
1 answer
555 views

Dash-8 Speed momentarily drops on takeoff

I was on a Dash-8 back in July and August. Looking at Flightradar 24, the speed is non constant and very choppy. It even goes down momentarily during the takeoff process. I believe that the Dash-8 ...
phkc070408's user avatar
3 votes
2 answers
249 views

Are departure briefing and take-off briefing the same thing? If the same, when is it appropriate to brief?

Are departure briefing and take-off briefing the same thing? If the same, when is it appropriate to brief? (before starting the engine, while taxiing, just before takeoff) I am asking the question as ...
pilot162's user avatar
  • 2,227
13 votes
3 answers
2k views

Why are the red/white control surfaces under the wing extended during a take off?

These pictures are more than a little dated as the CF-101 Voodoo's have not been flown since the mid 80's. In these two photos we can see the Voodoo is performing a full afterburner take off. Note ...
Forward Ed's user avatar
1 vote
0 answers
133 views

Why does V2 decrease for intersection takeoff

I have noticed that the VR and V2 decreases for same FLEX when departing from an intersection runway even when sufficient stop margin is available. What is the reason for this? And also does EFB ...
Udeesha Gunawardena's user avatar
6 votes
4 answers
2k views

Why is it that some planes require the AC to be turned off during engine start and take off?

I've noticed that some pilots turn off the climate control for start up and takeoff, like the Sr22. Why is this? And has this been phased out with new technology?
Boeing787's user avatar
  • 6,484
0 votes
0 answers
61 views

At take-off, what is the deflection angle of the rudder for the legacy Hornet? [duplicate]

At take-off, what is the deflection angle of the (legacy) F/A-18 Hornet's rudders?
George Geo's user avatar
  • 2,111
1 vote
1 answer
11k views

What is the minimum runway required for an a320 under 72,000 kg

How much is the absolute minimum runway required for takeoff and landing? How much could you reduce the takeoff/landing distance using various methods (eg-standing takeoff)? I'm talking about an A320 ...
Airbus a325's user avatar
3 votes
0 answers
392 views

ACN/PCN Reporting System - Tire Pressure

I have an Airbus A320neo WV054 and I want to operate at a RWY that has PCN 55/R/D/Y/T. Below is my aircraft ACN data as per the Aircraft Characteristics Manual. Looking at the table I can see that my ...
alQ's user avatar
  • 75
0 votes
1 answer
421 views

Can airplanes rear wheels spin on take off (like a car launching from a halt, where its rear tyres spin before they get grip)

Just wondering (especially in the rain) if an airplanes rear wheels will spin like a cars rear tyres will spin when it accelerates from a halt.
kofi's user avatar
  • 25
10 votes
3 answers
9k views

Why would an F-35 take off with air brakes behind the cockpit extended?

At the Farnborough Airshow, I saw an F-35 take off with air brake behind the cockpit extended. Why would they do that?
N Antani's user avatar
  • 133
11 votes
1 answer
3k views

What is this guy doing while walking along with the moving plane at the FRA airport?

While the aircraft was moving backwards (targeting takeoff), a guy was attached to it by a thread, probably "listening" to something, and was following the plane by walking at the same pace. ...
Déjà vu's user avatar
  • 425
6 votes
4 answers
1k views

Why is flap retraction done in stages?

After takeoff and upon achieving positive climb, why is flap retraction done in stages? For example, in the Airbus there are characteristic speeds after which flaps can be retracted (S and F speeds) ...
user avatar
1 vote
2 answers
618 views

Takeoff-chart Interpolating Numbers from a range

I'm studying for my AIRAT (Instructor Written) in Canada using Nizus, but I've always had trouble answering the questions about takeoff distances at 27 ºC when given a chart with 20 ºC and 30 ºC, even ...
zeeb's user avatar
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