Skip to main content

Questions tagged [fuselage]

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

Filter by
Sorted by
Tagged with
0 votes
1 answer
53 views

Range, Endurance and Fuel Cost Savings of an Aircraft

I have recently carried out CFD simulations on the A320 fuselage and modified its fuselage. I did this by matching the Reynold's number of the cruising altitude. The reference values were taken at ...
Donktor69's user avatar
17 votes
2 answers
4k views

What is this strake near the nose of the MD-80 for?

What is this for on the MD-80? Is it a stabilizer?
Gabe's user avatar
  • 3,217
11 votes
4 answers
8k views

Why don't Airbus planes have perfectly smooth front sections?

From time to time I like to watch a planespotting video and I must say that one tiny detail bothers me a slight bit. Look at this Boeing plane: And at this Airbus: In particular, examine the section ...
scrrr's user avatar
  • 219
6 votes
1 answer
870 views

What are the bulges (with what look like air intakes) on the lower fuselage of the An-22?

On both side of the lower fuselage of the AN-22 there are long bulges. While the undercarriage doors are visible, they only account for a small proportion of the length, making me doubt they're just ...
Chris H's user avatar
  • 1,157
0 votes
4 answers
180 views

How much does the wing of a 6-seater plane weigh?

I could find plenty of information regarding the total weight (empty operating weight, maximum landing weight, and maximum takeoff weight) of every plane in commercial production. However, I could not ...
CoastCity Lapse 00crashtest's user avatar
6 votes
3 answers
932 views

Why doesn't Su-57 blend the engine nacelles with the fuselage, like other 5th generation fighters?

All the current and upcoming 5th generation fighter aircraft have increasingly similar physical layouts regardless of their origin. This seems to be due to similar design choices around stealth and ...
paki eng's user avatar
  • 161
0 votes
2 answers
144 views

Is there a clear cut method for cutout on structural members?

I have been looking into fuselage cutouts especially, window cutouts on the skin panel for a school project. Reading Bruhn and Niu Books, both state that there are no clear cut methods for fuselage ...
danielthomas's user avatar
0 votes
1 answer
260 views

Does the cross-sectional shape of a fuselage affect drag?

Comparing two bodies with the same streamlined longitudinal shape, and the same cross-sectional area, one with a circular cross-sectional shape, the other with a quadratic cross-sectional shape, ...
Frank's user avatar
  • 415
19 votes
4 answers
6k views

Why doesn’t lightning punch a hole in the fuselage?

Electric arcing creates a huge temperature in the air around it. When lightning strikes planes, why doesn’t this high temperature air melt/deform the aircraft skin? Also can these high temperatures ...
Sohail Khan's user avatar
22 votes
4 answers
9k views

Why was the SR-71 made of titanium?

The temperature of the Lockheed SR-71 Blackbird's fuselage never exceeded 500 Celsius, which, to my knowledge, would be perfectly tolerated by stainless steel. So, why titanium?
Miki's user avatar
  • 323
20 votes
3 answers
3k views

Why don't airliner vertical tails extend to the very aft of the fuselage?

Looking at several modern airliners, the root of the vertical tail doesn't extend right to the aft-most point of the fuselage. This seems counter-intuitive given extending the tail further aft would ...
Harry Karmel's user avatar
  • 1,185
-3 votes
1 answer
200 views

What is a battery pod?

On a manual in school was written: 'The fuselage battery pod must be made in a metal to improve the impact resistance'. What is meant with battery pod here?
knowledgeloverx's user avatar
15 votes
1 answer
559 views

What is the round tube mounted on the roof just behind the windshield of a PC-6?

If you look at the below image: (image source: Wikimedia Commons) There are three "antennas" mounted on the forward portion of the cabin roof. The two rear, wing-shaped ones probably are ...
TheEagle's user avatar
  • 1,394
6 votes
2 answers
751 views

Why is the cross-sectional shape of some airliners' nose not perfectly a circle?

I found that the cross-sectional shape of some jet airliners' nose is not perfectly a circle. For example the Boeing 737 aircraft: (source: aeroprints.com via Wikimedia Commons, CC BY-SA 3.0) Look at ...
Frank's user avatar
  • 415
1 vote
1 answer
290 views

Kinetic energy to perforate skin/fuselage of aircraft

I know that most aircraft have skins that are either aluminum or an aluminum alloy variant. I'm trying to figure out the minimal amount of kinetic energy that would be required for a projectile to ...
Hannah Sanders's user avatar
2 votes
1 answer
400 views

How much heavier will a fuselage be with a 10% increase in diameter?

Is there some kind of a ratio or a very general rule of thumb that describes fuselage weight increase in relation to the increase of its diameter? (All other things being equal, length etc.) Note: I ...
Electric Pilot's user avatar
2 votes
1 answer
176 views

Is the fuselage of the CEA 311 Anequim configured as elliptical?

I am currently studying the effects of reduced drag induced by laminar flow on the subsonic aircraft. In order to complete that, I have believed I found the optimal fuselage which has the best ...
Roberto Sprat's user avatar
2 votes
1 answer
3k views

How should I decide on the type of stringer to be used in an Aircraft's wing and fuselage?

I am trying to add stringers on the skins of an aircraft's wing as well as fuselage, for the same reason why they are present in most of the aircrafts i.e. to resist bending (and a possible buckling ...
Rameez Ul Haq's user avatar
15 votes
1 answer
4k views

What are the two vents on the 777's left side behind the wing for?

— wikimedia.org; cropped Those have always caught my eye and I always dismissed them as equipment cooling vents. But, after finally remembering to check the flight manual, it turns out the equipment ...
user avatar
1 vote
2 answers
246 views

Why are liquids for cooling not allowed when drilling on CFRP/Al or CFRP/Ti stacks for aeroplane wings?

I recently did some research on the effect of cooling on CFRP/Al7075 drilling. 7075 is used for aeroplane main wing upper skin, and the plates need to be overlayed and drilled for flush riveting. But ...
Mohamad Ghasemiyan's user avatar
4 votes
1 answer
1k views

Would an oval fuselage fly as well as a round one?

I was looking at various planes, and was wondering why we don't have oval shaped fuselages instead of only round ones. Is there a reason? Perhaps aerodynamics, or stresses?
David Bryant's user avatar
1 vote
2 answers
376 views

What is the structural impact on the wing if no fuel is stored in the wings and just in the fuselage?

What is the structural impact on the wing if no fuel is stored in the wings and just in the fuselage and how to counter possible advantages/disadvantages? Has this topic already been researched?
mldmnn's user avatar
  • 111
3 votes
4 answers
1k views

Can an aircraft have a lifting fuselage that only generates lift at certain speeds?

I came across the blended wing body designs and their advantages etc. They are still very far from reality and require 20 more years till we see them fly. Isn't a conventional fuselage design with a ...
Sherlock Homies's user avatar
0 votes
3 answers
508 views

Would a flying-wing drone fly farther if filled with helium?

I'm wanting to build a flying wing designed drone and I'm wondering if I were to fill the fuselage with helium if it would improve it's range.
at0micV3n0m's user avatar
22 votes
1 answer
2k views

What is the shiny stripe around the aft wing–body fairing on an A380?

Source: planespotters.net: 1, 2 Regardless of the airline, that part is always unpainted, and in the right conditions, it looks shiny. From below the plane, it wraps around the wing–body fairing. Is ...
user avatar
11 votes
1 answer
5k views

What are the random, differently-coloured rectangular patches on the top of this Boeing 737's fuselage?

The top section of this green-painted Boeing 737's fuselage was slightly faded and I noticed a few dark-green, rectangular patches on its top. They look like patch kits on a bicycle tyre's inner tube. ...
Johannes's user avatar
  • 113
2 votes
1 answer
253 views

How can I modify a fuselage to increase the payload?

I'm designing a regional turboprop for a university assignment. The design requirements are very similar to the Dash 8 Q400 in terms of passenger capacity (90 pax), speed, range, runway length ...
Rory McDonald's user avatar
0 votes
1 answer
339 views

How much aluminum was used in the Boeing 727?

What is the weight of aluminum used in the Boeing 727 fuselage? Do you know where I can find it? Any manual or site or something like that?
Deli M's user avatar
  • 1
5 votes
2 answers
3k views

What are these "winglets" on the roof of the 737?

I circled the parts on the fuselage in red.
Justin's user avatar
  • 79
24 votes
2 answers
13k views

Why is the A380's fuselage designed with a flat bottom?

I want to know if there is some explanation for why the A380 bottom is flat instead of the oval shape, just near the wings.
Robert M's user avatar
  • 241
12 votes
3 answers
3k views

Why did water come into USAirways Flight 1549 if an airplane is sealed and pressurized? [duplicate]

Airplanes are supposed to be air-tight and pressurized. However, when USAirways Flight 1549 landed on the Hudson river; water started to come into the airplane. How is this possible if the airplane ...
Asynchronous's user avatar
4 votes
1 answer
460 views

What Is this on the fuselage of The Fokker F100? [duplicate]

What Is this on the fuselage of The Fokker F100?
Mohammad Gohardoust's user avatar
0 votes
0 answers
107 views

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 ...
Suryetto's user avatar
3 votes
2 answers
1k views

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 ...
Vikki's user avatar
  • 28.4k
1 vote
0 answers
110 views

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 ...
Daniele Procida's user avatar
47 votes
4 answers
6k 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 ...
Manu H's user avatar
  • 16.5k
13 votes
4 answers
5k views

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 ...
Vikki's user avatar
  • 28.4k
9 votes
3 answers
4k 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.
user37419's user avatar
9 votes
2 answers
1k 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, ...
Vikki's user avatar
  • 28.4k
5 votes
2 answers
2k 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 ...
Daniele Procida's user avatar
0 votes
4 answers
811 views

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 ...
R S's user avatar
  • 377
2 votes
1 answer
2k views

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?
David Teahay's user avatar
  • 2,885
6 votes
2 answers
4k views

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 ...
Nauman Shahid's user avatar
-1 votes
2 answers
164 views

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 ...
securitydude5's user avatar
28 votes
3 answers
12k views

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 ...
securitydude5's user avatar
5 votes
1 answer
1k 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 ...
securitydude5's user avatar
6 votes
2 answers
1k 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 ...
cat's user avatar
  • 402
3 votes
2 answers
3k views

Which aluminium alloy is used in the Boeing 747's fuselage?

Which aluminium alloy is used in the Boeing 747's fuselage?
engineering student's user avatar
10 votes
2 answers
13k views

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 ...
vestland's user avatar
  • 203
8 votes
2 answers
1k views

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 ...
LandonZeKepitelOfGreytBritn's user avatar