Questions tagged [takeoff]
Takeoff is the first phase of flight, when an aircraft lifts off from the runway or other surface
5
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1answer
155 views
Why not separate out the two definitions of V-1 into two separate Vspeeds?
V1, officially the takeoff decision speed, has, somewhat infamously, two separate definitions:
It is defined as the minimum speed at which, if one engine fails, the pilots can press to liftoff and ...
12
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6answers
6k views
Why is indicated airspeed rather than ground speed used during the takeoff roll?
My instructor asked me this question during my lesson and I couldn't come up with any answers. He asked why do I need to look at the indicated airspeed rather than ground speed when in takeoff roll or ...
4
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1answer
161 views
What are the pros and cons of practising figure-eight landings on perpendicular runways?
This is just a gee-whiz question, I have no intention of doing this nor am I trying to get anyone's blessing on this.
Part of remaining current to legally take passengers up in a plane is having 3 ...
0
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1answer
103 views
What flying boat has the highest maximum takeoff/landing sea state?
I assume that flying boats have limits on the sea states they’re certificated to take off and/or land in (for instance, hitting a ten-meter wave head-on in a five-meter wooden plane is probably ...
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2answers
46 views
Why is trim for take off affected to Vmc(Speed maintain control)?
I am studying in Vmc part, but I have hard time to understand that trim for take off is affected to Vmc. How and why does it make Vmc speed increase?
6
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2answers
2k views
Why is autolanding ILS a thing, but not autotakeoffing ITS? [duplicate]
In this answer to the question of why zero-visibility landings are legal and routine but not zero-visibility takeoffs, the poster makes the following point:
When an aircraft lands in near zero ...
1
vote
1answer
79 views
Does heavy air pollution improve takeoff performance?
As you all probably know by now, aircraft have much better takeoff performance when and where the air is denser; this is why flights need to either use longer runways or jettison passengers and cargo ...
5
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2answers
468 views
Why would one want to slow to V2 following an engine failure during takeoff?
Reading about the crash of American Airlines Flight 191, the proximate cause of the final loss of control was the pilots' reduction of the aircraft's airspeed to V2, in compliance with the published ...
3
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2answers
215 views
How do I translate this propeller start procedure into English?
I'm translating a documentary from Hungarian to English. There is a scene where the pilot of an aeroplane with a propeller is preparing for take-off.
He says (seemingly into a 2-way radio) two short ...
17
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3answers
6k views
How does the F-35B not flip over during transition?
As the engine nozzle rotates, the lift-fan cannot. Wouldn't this imbalance of moments around the center of gravity result in the F-35 pitching up onto its back?
As can be seen at 5:14 in this video: ...
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4answers
456 views
Why do heavy departures wait 5-10 minutes on the runway at ZRH?
I'm frequently travelling to Zürich for business and I usually make my schedule so that I have at least an hour to do some planespotting and photographing at the ZRH airport.
Whenever I came to the ...
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4answers
238 views
How is vertical speed managed in Airliners? [duplicate]
When an Airplane starts to take off, the Horizontal velocity would generate it the necessary lift, and then Airplane pitches up to further increase the lift. As the Airplane is climbing up, the net ...
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3answers
723 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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0answers
82 views
How does wind affect takeoff weight limits?
Two days ago I took off from BUR in relatively windy (although dry) conditions. Flightradar showed departure from runway 33, and winds were recorded roughly mid 20s kts from the N-NNE direction. ...
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1answer
95 views
Is there a maximum horizontal acceleration for passengers?
Are there any regulations regarding the maximum acceleration forces that passengers should experience during takeoff/flight/landing?
Or what would be considered to be an acceptable horizontal ...
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4answers
178 views
Could an airplane takeoff with a very strong tailwind if its propeller blades are set to a negative pitch? [closed]
Would it be possible for an airplane to accelerate and takeoff with a very strong tailwind if its propeller blades are set to a negative pitch?
For example, let's say that a hurricane was approaching ...
2
votes
1answer
160 views
What was the airline attendants looking at in LED display before light off in A320 [closed]
I was journeying on Indigo Pune-COK back and forth. At both the times, I noticed airline attedants looking at some LED display which seemed to be some sort of balance scale. At first, I thought they ...
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3answers
198 views
What makes an airplane STOL?
I watch STOL pilot champs Zenith CH701 here.
The engine power are: 130 HP, 80 HP, 120 HP and 100HP, respectively. Amazing. As per my observation, the third airplane ...
2
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3answers
169 views
Has using engine exhaust blown onto an airfoil ever been tried to make an vtol aircraft?
Has usong engine exhaust blown onto an airfoil ever been tried to make a vertical takeoff and landing aircraft?
2
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1answer
58 views
Learn in-depth about airplane operations [closed]
Currently seeking a book or manual that teaches a civilian how a cargo aircraft operates and what it's pilots do, say a 787. Preferably a high-level overview at a per flight phase:
Pre-flight: Flight ...
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0answers
146 views
How are the takeoff V speeds calculated? [duplicate]
What is the actual formula for calculating the takeoff V speeds of an aircraft with any configuration? Specifically, I mean V1, Vr and V2
I know there are many factors, but what are they specifically ...
1
vote
1answer
229 views
How can I figure out the take-off minimum when multiple minimums are listed in the TPP?
For example:
If the published take-off minimum depicts:
Standard with minimum climb of 565' per NM to 2800, or 1000-3 with
minimum climb of 370' per NM to 2800, or 1500-3 for climb in visual
...
1
vote
1answer
112 views
What are the takeoff and landing distances of motor gliders?
I'm doing some estimations of weight and thrust loading for a college project, and in the formula below the landing distance is not a variable, but should be estimated using similar aircraft and usual ...
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6answers
337 views
How much can I exceed crosswind limits by? [duplicate]
I'm learning in a Tomahawk. They have a maximum demonstrated crosswind component of 15 knots. My school has a limit of 12 kt, but will only allow students to fly in 50% of that, so 6 kt.
Since it's ...
2
votes
2answers
901 views
How long does a runway have to be for an Airbus A380 to takeoff?
I have seen several Airbus A380's takeoff on large runways, but how small can a runway get for an Airbus A380 to takeoff fully without overrunning?
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2answers
118 views
How to calculate the amount of weight my plane can takeoff with?
This is how I approached this problem-
My takeoff run is limited. So, depending on my configuration I calculated the maximum possible velocity I can attain in my groundroll. I assumed that at the end ...
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vote
5answers
201 views
Does headwind on takeoff affect g force?
I'm aware that headwind or tailwind does not affect rate of climb or descent but only the angle. I'm not sure if it affects the g force or not. I'd assume it affects g force because using trignometry, ...
6
votes
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 assuming the speed and payload would ...
0
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2answers
99 views
How do I calculate FPNM for standard take-off minimums?
I have trouble understanding and calculating FPNM for standard take-off minimums.
As I understand, the formula is: (Ground speed)/60 * FPNM = FPM
Let's say the ODP says:
565' per NM to 2800, or ...
6
votes
1answer
458 views
What is this 'runway number' automatic readout system on a flight deck?
I was watching this flight-deck video (starts at 11:13) of a Turkish Airlines Boeing take off from Istanbul and just as they accelerate on the take off roll there seems to be an automatic voice in the ...
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6answers
3k views
Is it okay to take off with weight more than the POH max gross weight?
I wonder if I could take off with weight more than the gross weight stated in the POH of my aircraft as long as I take off with a higher speed?
I think I have done it once by mistake.
27
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3answers
4k views
Why would a turboprop rev down just before going full throttle during takeoff?
The only turbprop I've travelled is the ATR 72. I've noticed that the props' rev go down (for like a second, the sound also goes down) just before engaging full throttle in order to takeoff. I've ...
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2answers
79 views
What does LNAV engagement exactly mean?
I notice the term LNAV engagement being frequently mentioned in aviation related discussions or in several FAA's relevant material. Take, for example, this quote from Order 8260.58A (PBN Instrument ...
4
votes
2answers
86 views
Under what circumstances can the Initial Climb Area extend more than 2 nautical miles?
While studying of FAA's Instrument Procedures Handbook, I noticed that on page 1-16 (Chapter 1: Departure Procedures) it defines the Initial Climb Area (ICA) as follows:
The ICA is the segment of ...
3
votes
2answers
282 views
gear down during takeoff for extended period of time
Normally when an aircraft departs, the landing gear is retracted shortly after the aircraft is airborne. While watching aircraft departing from an airport in my city, I noticed, that occasionally the ...
15
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2answers
3k views
Is it the tower's purview to recall an aircraft from the runway for loading the wrong cargo?
On August 17, Ryanair flight FR 11 entered the runway after already being delayed for 1.5 hours, only to exit at the first available opportunity. After being jokingly welcomed to Stansted from where ...
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2answers
269 views
Safety regulations for take off spectators around airports?
In a Greek island, an A320 blasted a child ten meters away, during take off. It was with his family outside the airport (Greek src).
I wonder what are the regulations, if any, for how much people are ...
12
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4answers
1k views
In light aircraft, non-instrument flight, apply (nearly) full aft elevator before beginning the takeoff roll or at some predetermined speed?
Consider a small, light, nose wheel tricycle aircraft, something along the lines of a C152 or similar, sitting at the end of the runway ready for takeoff, with no issues and with all pre-takeoff ...
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3answers
736 views
Definition of “Rotation Speed” vs “Lift Off Speed” vs “Fly Off Speed”
Is rotation speed and lift-off speed ever used interchangeably? (AMENDED Question) Is lift off speed and fly off speed the same? (See supplemental info below)
I thought I clearly understood the ...
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0answers
121 views
Does the “Climbing right turn” instruction of this SID violate the “Climb to 400 feet above DER before turning” requirement?
I was examining the LaGuardia Five SID, and I noticed that for runway 13 (Coney Climb) it gives the instruction, immediately after takeoff, "Climbing right turn heading 180 degrees to intercept CRI R-...
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0answers
82 views
Is there an equivalent of the Threshold Crossing Height for departure procedures?
The definition for the Threshold Crossing Height is, according to the sources that I have checked, "the theoretical height above the runway threshold at which the aircraft's glideslope antenna would ...
6
votes
1answer
158 views
What does the indication “ATC” in some Take-Off Minimums mean?
While studying FAA's Standard Instrument Departure Procedures, I came across the La Guardia Five Departure SID. Take, for example, the Take-Off Minimums for runway 13L:
Rwy 13 (Coney Climb): 400-2 ...
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0answers
443 views
Boeing 757-200 Fuel Burn
So up front, I'm aware of the high number of aircraft and environmental factors and how oversimplified my request is. After all, there is a reason that the aircraft manufacturers provide charts to ...
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2answers
690 views
What are my take off minimums?
Requesting for some clarification.
Part 91 operator. 0-0 visibility and ceiling minimums
Departing Rwy 15 at ADS
Can I depart with a standard 200 ft/nm cross DER 35 ft. since I don't need to ...
12
votes
1answer
3k views
Has a micro-burst or wind shear caused fatalities on takeoff?
Delta Flight 191 at Dallas-Fort Worth (1985), TANS Perú Flight 204 in Peru (2005), FedEx Express Flight 80 in Japan (2009), and Eastern Air Lines Flight 66 at New York's JFK, are all examples of ...
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2answers
510 views
Runway Number Landing and Departure Left Traffic Question [duplicate]
If I am "departing runway 36", what does that mean? I understand that runway 36 is at the north end of the runway (360 magnetic); So my question is does the aircraft start at the north end 36 and take ...
48
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6answers
16k views
Has an airplane ever been launched from a submarine?
Airplanes are routinely launched from ocean going vessels, namely carriers.
Missiles are routinely launched from submarines.
Has an airplane ever been launched from a submarine?
From questions ...
12
votes
4answers
716 views
Has an airplane ever been launched from a train?
Presumably helicopters have landed and lifted off railroad flat cars.
Has an airplane ever been launched from a train?
(my artwork)
F-84 during project ZELL testing (info provided by jwenting)
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3answers
312 views
Why is extreme cold weather a challenge at airports, since jets operate at extreme cold conditions in flight?
Wondering what specifically the issues are. Obviously, taking off and landing have more 'moving parts' but more curious about the actual extreme cold.
I assume the operating temperatures at cruise ...
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0answers
100 views
Why to keep window shutter open during takeoff? [duplicate]
I understand when they ask to close the window due to bright sunlight reflection on eyes during the flight but I haved noticed we are asked to open the window shutters and leave it open during the ...
