Questions tagged [fuselage]

The main body of the airplane that holds the cargo and passengers.

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46
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3answers
4k views

What is the offset in a seaplane's hull?

I noticed there is a little offset in a seaplane's hull (highlighted in the following picture). I suppose this is useful as it exists in all the seaplanes I know. It appears to be neither a ...
29
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4answers
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What is this line found above the door on many aircraft?

Many aircraft have this line above the door as seen in the photos below. What is it, and what is its purpose? Source Source
28
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3answers
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Can cameras and LCD screens replace cabin windows?

Windows in aircraft create a weakness to the structure, that is why they are very small. I'm not asking about installing them in the cockpit, which would create safety pitfalls, but could the windows ...
28
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2answers
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What is the purpose of the glazed round area atop the Ju 87 Stuka G?

I haven't been able to find any pictures of this feature aside from models, nor any reference to what it is. I'm going to make a complete guess and suggest it's a searchlight for night-fighting to ...
27
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6answers
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Why use an airplane with non-retractable landing gear for aerobatics?

I'm watching footage from Red Bull Air Race 2017 in Kazan (one example is ) and clearly at least some of the airplanes used have non-retractable landing gear. I was ...
26
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4answers
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Why is the fuselage on an airliner circular-shaped?

Consider the fuselage of an A300. I have noticed this not only with airliners, but also for private jets and turboprops: why is the fuselage circular-shaped? Why don't aircraft have square-shaped ...
21
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1answer
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Why are cabin doors outlined with a different color than the fuselage?

On almost all airliners I have seen, the doors are painted inside a rectangle which appear to reflect more light. This is the case whether in the aircraft has its manufacturer's paint or an airline's ...
20
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2answers
3k views

What is the weight saving of windowless fuselage for cargo aircraft?

What is the weight saving of a windowless fuselage for cargo aircraft? Does anyone have a rough estimation?
17
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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-...
16
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1answer
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Why are the intakes of some fighters not attached to the fuselage?

Look at the photo below. As you can see the intake isn't attached to the fuselage. Why? Other examples include the F-16, F-22, and F/A-18 Hornet. (F/A-18E Super Hornet Walk Around)
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4answers
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Why does the DC-9-80 have this cusp in its fuselage?

The fuselage of the McDonnell Douglas DC-9-80 (marketed as the "MD-80") has a pronounced cusp at floor level, as can be seen in this diagram (courtesy of Boeing, eater of McDonnell Douglas - at least, ...
13
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2answers
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Why didn't the Boeing 757 share the 767 fuselage?

(Flight) Early 767 design was a trijet. The numbers-built for the 757 and 767 is +1,000 each. They are both equally successful. But why didn't the 757 feature a slightly shorter 767 fuselage to cut ...
13
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2answers
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What are these lines on the fuselage of a 747?

Have a look at this picture: It's from Airliners.net (though I've modified it a lot) and shows some lines on the fuselage. What are they? Are they ...
11
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5answers
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Why do airliners have “pressure bulkheads”?

Image source: FAA What part of the fuselage aft of the bulkhead would leak pressure? Or is it just there to reduce stresses? How does a DC-9/MD-80/90 incorporate aft bulkheads when there's a ...
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4answers
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How is a wing joined to the fuselage?

I've seen this video from Airbus: This is a capture from that video: What is the process for attaching the wings to the fuselage?
10
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1answer
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What are these elements on the back of a Boeing 737?

I forgot the model of that plane but I believe it's a 737. I labeled each element for clarity. What are they? Click here for high-res.
10
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1answer
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What are the protrusions on the sides of the fuselage of the F-16I?

I've noticed that the F-16I has these protrusions on the sides of its fuselage. What purpose do they serve?
10
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2answers
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How well does a composite fuselage deal with lightning?

The metal fuselage of an aircraft, being highly conductive, protects occupants, interior components and fuel from the effects of lightning by conducting the electricity around them. Some newer ...
10
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3answers
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How is a fuselage 'puncture' repaired?

Operator on phone, GoAir plane hits aerobridge How is such a 'puncture' repaired? Is the cabin pressurization also affected by such a puncture, and approximately what is the cost incurred to repair ...
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Why were the fronts of the Messerschmitt Me-109 painted yellow?

After seeing the movie Dunkirk I learnt that the Luftwaffe didn't actually use the yellow coloring on the Me-109 until a few months after the battle of Dunkirk. Was this perhaps done to avoid friendly ...
9
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2answers
611 views

Did the cusp in the Boeing 377/C-97/KC-97’s fuselage structure cause fatigue problems?

The Boeing 377 Stratocruiser - a civilian adaptation of the C-97, a military transport which would also later be developed into the KC-97 - were derived from the B-29/B-50 family by grafting a large, ...
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2answers
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What are these two holes on the forward fuselage of a Boeing 747?

Does anyone know what are the two holes are on the Boeing 747, on the left forward part of the fuselage? Source: airliners.net I guess the right hole is the E/E compartment smoke override valve, is ...
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3answers
755 views

What is the weight of the fuselage (only) of the Boeing 747?

I'm wondering about the weight of the Boeing 747's fuselage.
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How do engineers make sure UAV don't land on their front propeller?

Take, for instance, the following UAV: and suppose you have a payload with a very big volume that fits exactly in the fuselage (and there is no more space), but is extremely light. Thus, the heaviest ...
8
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1answer
614 views

Would discharging a firearm in-flight cause an explosive decompression?

I was reading a BBC FAQ about Federal Air Marshals, which has this chilling quote in it: A gunfight on a passenger airliner is seen as an option only of last resort. Presuming an air marshal has ...
8
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2answers
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What is the name for the Mitsubishi A6M Zero's one-piece wing/fuselage?

The Wikipedia article on Mitsubishi A6M Zero fighter cites an article from Life magazine published on Nov 4, 1942: The Zero's fuselage and wings were constructed in one piece, unlike the American ...
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2answers
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What is the stick at the bottom of the tail on a ATR-72?

During my last flight I observed the ATR-72 has a stick protruding from the bottom of the fuselage, near the back of the airplane. See the bottom of the fuselage in this picture, slightly to the left ...
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1answer
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Why are these rivets on the 777 so visible?

Look at this 777 nose: Source: Airliners.net It is full of rivets.Why are they so visible on this particular aircraft? Why doesn't the radome have rivets?
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2answers
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How can air travel be so safe if the aircraft skin is only 1-2 mm thick?

Aircraft skin is not very thick at all, yet air travel is the safest form of travel. All aviation professionals know why, but most occupants of an airliner are not professionals. How can it be ...
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2answers
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Why would a passenger airliner be missing windows in the fuselage?

On many airplanes (you can take the A330 to make an example), the fuselage is not completely covered by windows. In some cases it is due to the presence of the lateral emergency exit, in some other ...
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2answers
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How does the fuselage handle the different loads?

I have been trying to find out how the loads experienced by a fuselage are transferred between structural members (bulkheads, formers, frame assemblies, skin, longerons, stringers). I understand that ...
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In Aircraft Design, is the ratio of fuselage surface area to control surface area meaningful for calculating flightworthiness? [closed]

Do aircraft designers look at the ratio of how much fuselage surface area can be loaded onto a given unit of wing and tail surface area including elevator, aileron, rudder etc? (Possibly, the surfaces ...
6
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3answers
534 views

Are commercial aircraft required to have the model number painted on them?

On a lot of aircraft, the model number / aircraft name is clearly marked somewhere on the fuselage, e.g. "Airbus A320". Is there any rule or mandate, that all aircraft must bear the model number at ...
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2answers
457 views

What is the wingtip station number on a Boeing 747?

In the figure we can see the station line even though it is not clear. I'am using that picture just for an example to make the question clearer. Main question What is the station number for wingtip ...
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0answers
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Are the press reports of this incident plausible? [closed]

On May 21st, before an Air Berlin flight from Düsseldorf to Stuttgart (~340 km, 210 mi), a hole in the fuselage of the plane was discovered by passengers. It is claimed, that the crew continued flight ...
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1answer
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What would happen if someone covered a small hole in the fuselage of a plane with a soft body part?

If I punched a hole of the size of a small coin into the fuselage of a plane, and then covered it with the palm of my hand, what would it happen to my hand?
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1answer
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What are these green “bags” on the SSJ100?

I've seen some green "bags" on the SSJ100 when they were building it. What is the purpose of these?
5
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1answer
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Which are some planes shaped like an inverted wing?

To understand my question better, let's consider the priciple behind the lift generated by the wing - The upper surface of the air-foil is curved to deflect the air downwards using the Coanda effect. ...
5
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2answers
235 views

What was the first aircraft designed with a plug-system fuselage, and why?

Nearly all modern transport aircraft are designed with a plug-system fuselage, allowing longer and shorter variants to be built by adding or removing plugs. In addition, the plug system simplifies ...
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3answers
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Why is the wing of large commercial jet aircraft usually located below the fuselage?

When the wing of an aircraft is located above the fuselage, the aircraft is generally considered more stable. When the wing of an aircraft is located below the majority of the fuselage, the aircraft ...
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3answers
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What is the section of the fuselage below the wings called?

Is there a specific name for the protruding section of fuselage beneath the wings? Im talking about the area where the landing gear bay often is. In the photo it's where the red Emirates logo is ...
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2answers
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Which aluminium alloy is used in the Boeing 747's fuselage?

Which aluminium alloy is used in the Boeing 747's fuselage?
4
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1answer
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Why are passenger and cargo airplane noses manufactured separately from fuselages and then put together?

I was wondering why the fuselage of a passenger airplane is not built along with the nose? It might be difficult to build fuselage and wings together as one unit, but nose is a small part. Then why is ...
4
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2answers
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Why do most commercial aircraft have their fuselage over the wing, instead of under? [duplicate]

Almost all commercial jets today seem to have the fuselage/cabin mounted above the wing, why is this? why isn't it mounted under the wing like some freight airplanes? Examples of above and under? ...
4
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1answer
537 views

Can small RC aircraft utilize a steel sheet monocoque construction?

I have seen small RC aircraft built from just about everything: cardboard, sytrofoam, fiberglass, aluminum, coroplast, etc. Most these designs are at least partial monocoque designs. Is there any ...
4
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1answer
679 views

How is an Airbus A380 fuselage joined and fastened together?

An Airbus A380 fuselage is manufactured in three different parts and then assembled together: (Images courtesy of Airbus S.A.S 1994) The fuselage functions under extreme conditions: low pressure ...
3
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2answers
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Would climbing onto fighters placed on display cause damage?

The question is about any more or less modern plane similar to Su-27 in its fuselage design. It's not uncommon to install retired planes as monuments. Here's one example in Eastern Europe (image from ...
3
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1answer
394 views

Do fuselage rip/crack/damage sensors exist?

Are there sensors that can detect a rip, crack or damage in the fuselage skin by not using air pressure differential on aircraft?
3
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1answer
123 views

Beside payload size, what precise factors are considered to choose the fuselages shape?

I am currently reading this very interesting book, which explains -I guess- most of the things you need to know in order to design aircraft. Yet it is not clear to me besides the payload size what ...
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1answer
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Why are 737 fuselages built in Kansas?

737 fuselages are built in Wichita Kansas and are transported by train to Renton, Washington, where the plane is assembled. Why outsource the fuselage all the way to Kansas? The cost of moving the ...