Questions tagged [fuselage]

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

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Airliner fuselage [duplicate]

I would like to know how much thick is a modern airliner fuselage, and which systems are on the plane to mantain the correct pressure of air in the cabin.
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Wing fuselage joint in small aeroplanes [duplicate]

I know that there are bolts to connect the centre wing boxes of the fuselage and wings in large aircraft, but what are the methods of connecting the wings and fuselage of small aeroplanes? I’m mostly ...
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What is this hole on the left wing of the Eurofighter Typhoon?

I came across the picture below and saw the hole near the centerline on the left which appears to have some carbon next to it. What is its purpose and where does the carbon come from?
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Why don’t double-bubble fuselages cause severe fatigue problems?

In response to my previous two questions about fatigue issues, or the lack thereof, generated by the cusps in double-bubble-fuselaged aircraft (Stratocruiser, DC-9-80), I received a number of answers ...
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How much does (or can) the fuselage of a long aircraft flex?

How much will the unsupported ends of an airliner's fuselage droop in level flight? In turbulence, how much vertical movement will they experience relative to the wing? And finally, in extreme ...
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which aluminium alloy was used in the 777 fuselage and which one will be in the 777x?

Seems like Boeing is going to use carbon fiber wings for the new 777x, but for the fuselage aluminium will be used, which alloy will be? and which one is it substituting?
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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 ...
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Why does the DC-9-80/MD-80 have this cusp in its fuselage?

The fuselage of the McDonnell Douglas DC-9-80 (also known 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 ...
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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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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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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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How fuselage creates lifting force when plane flying on a side?

On a question "How plane able to fly on a side" people answer that it's because fuselage shape crate lifting force and plane should have enough thrust. But that seems vague to me. How fuselage creates ...
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What creates most drag during flight: fuselage or wings?

From pic 1, I know the drag line is below the thrust line, but I am puzzled about where the drag line is in pic 2? Secondly, what creates most of the drag in flight, is it the fuselage or the wings?
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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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Is bleed air for fuselage pressurization at altitude purified or sterile/ If so how is this done [duplicate]

I just saw in the news, The epidemic deadly airborne disease Ebola has started killing people once again in Africa. Aircraft to and from the EU, the US and the rest of world fly over this deadly zone ...
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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 ...
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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 ...
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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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Which aluminium alloy is used in the Boeing 747's fuselage?

Which aluminium alloy is used in the Boeing 747's fuselage?
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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 ...
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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 ...
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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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Which FAA or EASA regulation does prevent a high wing to cross the passenger compartment?

I'm looking for reference subpart and eventually chapter in either FAA or EASA regulation where it is stated that for passenger aircraft with high wing passenger compartment can not be interrupted by ...
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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. ...
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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 ...
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How many fuselage skin panels are there for the Challenger 605?

How many fuselage skin panels are there for the Bombardier Challenger 605 aircraft, and where are their relative positions? For example, would this be an accurate simple drawing of it?
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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 ...
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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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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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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 ...
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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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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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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 ...
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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? ...
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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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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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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 ...
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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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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?
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Elliptical cross section fuselage [duplicate]

Could someone help me understand the mathematics involved in Elliptical cross section fuselage that are used in A380. Also how double bubble cross sections are calculated.
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Could some one explain me with the mathematical relations on how the double bubble fuselage cross section (example A380) is designed. [closed]

Could some one explain me with the mathematical relations on how the double bubble fuselage cross section (example A380) is designed.
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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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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 ...
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What are the disadvantages of a twin boom aircraft?

Not to be confused with twin fuselage design. Especially for high wing span UAVs, twin boom design seems to be a better option as it will reduce wing bending in flight. But it is not normally used, ...
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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.
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How is a horizontal stabilizer attached to the fuselage and works as a trimmable Horizontal Tail as well?

I am trying to figure out how does the horizontal stab attached itself to the plane and moves up and down? Is the HS attached by the rear spar and to the fuselage?
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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 ...
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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 ...
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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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MD81: Why are there so many lights on the fuselage?

Looking at this photo I can see lots of lights on the fuselage of this MD81. It can't be a reflection, can it? Source: Airliners.net Why are there so many lights?