Questions tagged [airbus-a380]

The Airbus A380 is a four-engine, double-deck, wide-body airliner that is currently (mid-2015) the largest production aircraft in the world

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31
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1answer
24k views

Why doesn't the A380 use its outboard thrust reversers?

One thing I noticed with the A380 is that it only seems to use the inboard thrust reversers while landing. I suspect it relates to FOD ingestion or perhaps damaging the runway. This is strange though, ...
12
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1answer
3k views

Why does the wing root of the A330 have a pronounced twist?

just wondering what the purpose of the pronounced twist on the Airbus A330 wing root is, I've noticed this on the 380 as well.
18
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3answers
16k views

How strong is the A380 fuselage-wing joint?

The Airbus A380 has a maximum take-off weight of almost 600 tons. How strong does the joint between the wings and the fuselage have to be so it doesn't break? And how could it be trusted unless real-...
51
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3answers
16k views

Can the A380 ferry an extra engine, like the 747?

A useful little quirk about the 747 is that it can ferry a fifth engine on the wing, for when another aircraft is stranded somewhere in the world. Does the A380 have the same capability? If not, how ...
38
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8answers
16k views

Why couldn't the A380 secure any orders for two straight years?

The double-decker aircraft has failed to win a single order from any new airline customer for two years now. Comparing its orders and sales with its biggest competitor, the B747 it had received 315 ...
27
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10answers
44k views

Can a plane fly without the Vertical Stabilizer?

What would happen if a plane (for the sake of the question let's say that the plane is an Airbus A380) lose its Vertical Stabilizer?
18
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3answers
8k views

Can a super land without flaps/spoilers?

Can the Airbus A380 or Boeing 787 land safely without flaps/slats/spoilers or thrust reversers?
2
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1answer
37k views

How much fuel does an A380 hold and where?

How much fuel does an A380 usually carry (in litres) and what is the maximum? How much is in each wing? How much is in other fuel tanks and where are they?
11
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5answers
2k views

Has Airbus planned to build a larger version of the A380?

The current Airbus A380-800 could carry over 800 people. Has Airbus planned to build a new, larger version that could carry 1000 or more passengers?
9
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2answers
5k views

What is the optimal wing sweep angle for a passenger airliner?

There are many different types passenger planes, but is there a optimal wing angle for these planes, that improves the plane's take off speed for example, or the fuel efficiency The Boeing 747 has a ...
53
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2answers
28k views

Can the Airbus A380 safely fly with two engines out on the same wing?

I know twin-engine jets can safely take off and fly with one engine out (i.e. all thrust only on one side). Of course quad-engine jets are also able to fly safely in case one engine is out. But is ...
22
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2answers
7k views

Why do some A380 main wheels have no brakes?

The A380 has 20 main and 2 nose wheels. Apparently the nose wheels have no brakes (compare with Are there any aircraft with a nose wheel braking system?). While researching for this question (How are ...
19
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3answers
11k views

How does the A350/380 operate on Variable Frequency AC generators?

To keep a constant frequency of 400 Hz, most aircraft have a CSD (Constant Speed Drive) associated to the AC generator. On most types (e.g. A320, A330, B737, B747, B777) an Integrated Drive Generator (...
9
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5answers
1k views

Is it currently possible to build a jet engine with 1,050 kN of thrust? (236,049 lbf)

Do we currently have the engineering know-how to build a 1,050 kN jet engine? This question originated from the idea of changing a 4-engine aircraft into 2-engines. I chose the A380 since it seems to ...
8
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2answers
7k views

What is the average time taken to load and unload the luggage?

I was wondering, how are Lufthansa able to unload luggage (LH 760) of 500 passengers and load the luggage (LH 761) of another 500 passengers, in just a 2 hour gap for return leg of 7000 KM FRA-DEL ...
26
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3answers
8k views

How many flight hours do the first retiring A380s have?

I read news here that an A380 previously owned by Singapore Airlines has been decommissioned and scrapped. Another A380 from Air France was also retired. Others are nearing retirement as well. But it ...
10
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1answer
25k views

What is the weight budget of a fully loaded A380?

Wikipedia provides some numbers (typical empty weight, MTOW, max fuel capacity, etc.), but I can't seem to find more detailed figures. For a purpose of this question, let's assume a fully loaded A380 ...
13
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1answer
1k views

Is the A380 ailerons' kinematic modified in alternate law?

I was looking at a video of a A380 display that led me to the "valse des ailerons". This strange ailerons behaviour is available in normal law, but what happen when some fly-by-wire features are not ...
6
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1answer
2k views

How is the area of flaps determined?

While may be possible to look up the dimensions of high lift devices in an aicraft's documentation, there is no information on what the underlying design choices are. Using Wikipedia, I found out ...
4
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1answer
635 views

What is the minimum and maximum number of jet bridges used on an Airbus A380?

What is the minimum and maximum number of jet bridges used for embarking and disembarking on a typical Airbus A380 trip and why?
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3answers
1k views

How does the lift coefficient of an A380 change when flaps are extended?

I would like to know the lift coefficient with 10 degrees of flaps extended.
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3answers
3k views

Why are the largest civilian aircraft not adapted for military use?

Frequently, civilian aircraft models are militarized, e.g. into the role of tankers, AWACS and others. In this militarization, we see a lot of "medium-large" aircraft, such as B707, A330. The super-...
17
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2answers
6k views

How much water does the Emirates A380 carry in order to provide onboard showers?

Do you realize that we are living in a world where you can get on an airliner and disembark cleaner than when you got on? Video: Shower in A380 First Class This just blows my mind. How much water ...
12
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2answers
3k views

Is A380's center of gravity really too far back?

I have searched and even studied plans from Airbus itself, but I was not able to confirm the following and would like to ask if the information I have is correct. TLDR version so you don't have to ...
5
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1answer
953 views

What is the air temperature inside of a tire right after landing?

What is the maximum design air temperature inside of a tyre of an Airbus A380's and a Boeing 747-800's main gear fitted with brakes, before landing after a 10 hour flight and right after landing? Are ...
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1answer
420 views

How far would an all electric A380 fly? [closed]

I have edited this to one question and thank you for all the feedback . I am trying to understand if there are any theoretical improvements in range when applying electric propulsion to large ...
27
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3answers
4k views

Do the A380 ailerons act as air brakes on landing?

Last month I was on an Emirates A380 to London Heathrow. I noticed on the landing, the right ailerons were fully up along with the spoilers when decelerating on the ground. Are the ailerons configured ...
16
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1answer
9k views

What are these panels underneath the wing root of a A380?

What are these open panels underneath the wing root of a A380 (right above the person standing under the aircraft)? Are they ram air exhausts of the air conditioning packs?
16
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2answers
1k views

Are the A380 engines interchangeable (given they are not all equipped with reverse)?

I have noticed that the A380 only uses the two engines closest to the fuselage to reverse thrust to brake. Are all four engines the same (i.e.: could they theoretically swap engine 1 and engine 2) or ...
12
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3answers
917 views

Why is the A380 a double-decker rather than a longer airplane?

It seems like making the A380 a double-decker increases the cross-sectional area of the fuselage, thereby increasing drag on the airplane. Wouldn't it be more efficient to fit so many seats in a ...
10
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1answer
501 views

What is the minimum separation between two landing A380s?

I have always assumed that landing separation depends on wake turbulence limits depending on weight class. However I see that no minimum separation needed for the A380 as trailing aircraft (and in a ...
10
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1answer
2k views

Is there a real risk of ingesting FOD into jet engines when using thrust reversers?

In the discussion of Why doesn't the A380 use its outboard thrust reversers, one of the reasons given was that engines 1 and 4 would be at great risk of ingesting debris. It was pointed out that the ...
10
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3answers
978 views

Why is Emirates not considering buying or leasing used A380s?

Airlines such as Korean Air are retiring their A380s. They are struggling to find buyers/lessors. In such a scenario, Emirates could easily obtain used A380s at cheap prices. Is Emirates not leasing ...
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3answers
2k views

Can a Boeing 747 or A380 climb with only one engine?

Assume that a Boeing 747 or Airbus A380 takes off at max takeoff weight. Minutes after takeoff, 3 engines fail, leaving only 1 engine operating. Can the aircraft still achieve a positive rate of climb?...
7
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1answer
4k views

What is Brake To Vacate (BTV)?

Emirates has this feature on many of its A380s. From what I've read, the feature decreases the amount of runway an aircraft uses after landing. It also helps the aircraft achieve a certain exit way. ...
5
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2answers
7k views

How large are the pilot rest areas of the A380 and B747-8?

How large are the pilot rest areas of an Airbus A380 and Boeing 747-8? What entertainment systems are found in them?
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2answers
2k views

Does the Reynolds number on a smaller model need to match the one of the original aircraft?

1.Airbus 380-800 : The overall length of it , is 72.72 m and its cruise speed is 903 km/h. Based on the mean chord of wing , its Reynolds number in cruise phase is around 75 millions. Now , a 1/18 ...
4
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1answer
872 views

How does a fuel tank fire self-extinguish in an A380?

On Qantas Flight 32 there was... ...an undetected fire in the left inner wing fuel tank that eventually self-extinguished How does a fire in a nearly full fuel tank self-extinguish?
2
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1answer
519 views

How many crew members load and offload luggage on an Airbus A380?

What are the standard ground needs of a modern double-decker airline. How many crew members load and offload luggage on a modern double-decker airliner on any typical trip?
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1answer
927 views

A380 reverse thrust on only half the engines [duplicate]

I noticed on this video of an A380 landing in rain that reverse thrust was applied to only the inboard engines. Do the outboard engines not have reverse thrusters? If they don't, then why not? If they ...
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2answers
599 views

Can a turbofan maintain torque when spinning fast?

I assume turbofan fan rpm could be increased only when: Using most modern jet engines (Airbus A380 and the Boeing B747-800) Using a magnetic gearbox which can handle more torque dor the same weight ...