Questions tagged [windows]

Used for questions pertaining to aircraft windows.

Filter by
Sorted by
Tagged with
76
votes
4answers
24k views

Has any passenger airliner ever offered forward-facing windows?

The empty, dolphin-like, forehead of the A380 seems like it would be an amazing place for the first and/or business class bar, especially if it had forward-facing windows. I realize in the A380's ...
58
votes
2answers
15k views

Why do airplanes have rounded windows?

Why are the windows of an airplane usually rounded at the edges?
46
votes
5answers
14k views

Why aren't airliner windows aligned with their seats?

On a recent airline flight, I noticed that the spacing of the plane's windows was different from that of the passenger seats: some of the rows had a window directly in line with them but for others, ...
37
votes
5answers
6k views

How do aircraft windshields not crack when flying at supersonic speeds through precipitation?

Randall Munroe (author of XKCD and What If), once wrote a What If about how fast one would have to drive a car in order to have rain water shatter the windshield. In the post he mentions that water ...
35
votes
2answers
10k views

Why do helicopters have windows near the pedals?

What is the purpose of the clear windows in some helicopters in the floor of the nose, right where the pilot's feet and pedals are? For example, here's a Huey with windows clearly visible: Airbus ...
35
votes
4answers
14k views

Why are some windows in cockpits made openable?

Why do aircraft allow sliding / opening windows in cockpits? What purpose does it serve, and why the same can't be done for passenger windows as well?
32
votes
3answers
14k views

Why are commercial aircraft windows typically oval instead of circular?

Pretty much what the title says. Surely a circular window would allow more window area while not compromising on strength? Some planes(Gulfstream jets) do have circular windows. Is there a reason for ...
32
votes
1answer
12k views

Why does the A380 not have front windows on the top floor?

The title says it all. On the 747, the cockpit is in the upper level and in the lower there's equipment (radar, avionics, etc.) But on the A380, the cockpit is in the lower floor and there's no ...
31
votes
1answer
5k views

Why do cockpit windows often appear to have a rainbow ‘tint’?

Why do cockpit windows often appear to have a rainbow ‘tint’? It’s similar to what you would see when looking at a shallow puddle of water with oil on top. Here is an example of a B777 cockpit window ...
30
votes
4answers
49k views

What materials are plane windows made of?

I've always wondered, what are those dual-layered (bonus: sometimes they have a little <2mm hole, why is it there?) windows commercial jets put next to their seats made of?
30
votes
1answer
27k views

Why is there a hole in one of the layer of an airplane's windows?

On a commercial airliner, there is a hole in one of the layer of the passenger windows. See here: and here: Or in more detail: Can you explain the physical reasons for this design choice?
28
votes
3answers
11k 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 ...
26
votes
1answer
16k views

Why open up the window shades before takeoff and landing?

On commercial airlines, I've noticed that the flight attendants always ask everyone to open up their window shades before landing or takeoff. I've always wondered why this is. Is it something to do ...
26
votes
1answer
3k views

What is this yellow section around the cockpit window?

Saw this while boarding the flight the other day, travelling between HYD (Hyderabad, India) to CCU (Calcutta, India) on Indigo Airlines. Aircraft was an Airbus A320. There was a yellow patch around ...
25
votes
4answers
15k views

What is the purpose of eyebrow windows?

Nowadays they are no longer needed but why do they cover them up like in this photo? What is their purpose and why aren't they used anymore? Source
24
votes
3answers
8k views

Why does the Boeing 787 have fewer cockpit windows?

Why does the Boeing 787 have fewer cockpit windows? The 787 has only 4 cockpit windows, whereas other airplanes have 6. Here is a comparison between the 787 and 777: ^ 787 V.S. 777 v
23
votes
6answers
6k views

What are the factors behind increasing aircraft window sizes?

Modern airliners like the Airbus A380 and Boeing 787 have bigger windows than older designs, like the Boeing 737 and Airbus A320. What factors have led to this change of window size, opposite to the ...
21
votes
3answers
4k views

How are Virgin Galactic's SpaceShipTwo's windows so large?

From Virgin Galactic on SpaceShipTwo: Windows in the passenger compartment will be 13 inches (33 centimeters) wide by 17 inches (43 centimeters) tall. IMO that's enormous for an airplane, ...
20
votes
2answers
9k views

Why do flight attendants on the 787 lock the dimmable windows at different phases of the flight?

I’ve heard of many passengers complaining about the FAs locking the dim setting at different phases of the flight. Seems to be something the passengers definitely don’t like. And the passengers cannot ...
20
votes
2answers
4k 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?
19
votes
4answers
6k views

What would prevent the installation of windows on the roof of an airliner?

What prevents airline manufacturers from putting a strip of glass along the roof of the aircraft? It would be a good addition in terms of cabin view, light inside the cabin, etc. Would it compromise ...
19
votes
1answer
2k views

What's the point of writing on a cockpit window?

Why would a pilot write on the cockpit window like this? From: source
18
votes
2answers
7k views

Is freezing of windows normal in airlines?

Recently I was flying on an Airbus A320. While cruising around 37,000 feet, I noticed half of the glass on the window had frozen. But it was a thin layer of ice. Was it anything to be concerned about?...
17
votes
2answers
1k views

Why did early 747s have only two or three windows on the upper deck on each side?

All 747-100s and some 747-200s were built with just three windows on each side of the upper deck.[1] I'm wondering why so few? Some of the 100s were retro-fitted with ten windows on each side, so ...
16
votes
5answers
11k views

Are sun's UV rays more harmful on an airplane at high altitude?

Most airplanes fly at >30k feet, way into the stratosphere / mesosphere where sun's UV rays aren't filtered by lower atmosphere layers. If the windows of the plane are open and the sun is shinning ...
16
votes
3answers
18k views

Can the cockpit windows on commercial airliners open during flight?

I observed that the cockpit windows on the commercial airliners actually open - good for a hot day while waiting on the airfield, I suppose. Is there a mechanism which prevents the window from being ...
16
votes
2answers
4k views

Why are several of the Tu-104’s cabin windows oddly positioned?

The Tu-104 (the fourth jetliner to fly1 and the second to enter revenue service2) has a cabin-window layout that is... somewhat odd, to say the least. From front to back: What appears to be the ...
15
votes
3answers
9k views

Are the window wipers on jet aircraft ever deployed in flight?

Many commercial airliners have car-like window-wipers. I would presume this is for taxiing only, as the wind would surely keep the windows free from water when airborne, or do they turn them on in ...
15
votes
2answers
2k views

Why are these windows on some airplanes red?

There are some red windows on the 737 and the CS-300 as well. Why are they painted red? Source Source
15
votes
1answer
4k views

Why is a 737 Original speed-restricted below 10 kft with inoperative windscreen heating?

According to this page on the 737's operational limitations, the Original 737s (737-100/-200) are limited to 250 KIAS below 10 kilofeet if the windscreen-heating system is inoperative: Anti-Ice & ...
14
votes
3answers
2k views

Why were the windows on the Concorde about the size of a hand?

I just saw a comparison between the 787 and Concorde windows. I could be wrong but it almost seems like a hand could cover the majority of the window.
13
votes
1answer
2k views

Electrically heated windshields are mostly transparent, but their colors vary from light blue, yellow or light pink. Please explain

Found it on a quiz worded this way. No other details unfortunately. I can only assume it has to do with the heated element materials of tungsten or molybdenum reaction with film layer materials. ...
13
votes
2answers
3k views

How frequently are airplane windows cleaned?

When you’re driving on the highway, after sometime unwanted insects and dirt accumulate on your windshield. When you stop over at a gas station, you might clean it off. It’s likely the case for ...
13
votes
6answers
2k views

How can an airplane land if a hail storm damages the windshield?

I understand hail can be very damaging to an aircraft, in particular to the engines and windshield. In the event that a windshield becomes cracked so that visibility is impossible, can pilots pop out ...
11
votes
2answers
1k views

Why do aircraft on a junk yard have blind windows (e.g. German “Landshut”)?

Today I saw a picture of the “Landshut” (named after a German city, pronounced lund's hoot, not Land shut). The aircraft was hijacked in 1977 and now rusts at the airport of Fortaleza (Brazil) since ...
9
votes
1answer
1k views

Why are the windshield wipers in the A320 power-up checklist?

I was watching the startup sequence for an A320 and it struck me as unnecessary minutiae to ensure the wipers are off before power on. Is there something important that I'm missing that puts ...
9
votes
1answer
1k views

Why do the CRJ700 window shades open in different directions?

On a CRJ700, the window shades in the rows immediately fore and aft of the exit doors open downward. All the rest open upward. Seen on more than one aircraft. Is there an engineering rationale for ...
8
votes
2answers
6k views

Did the SR-71 have any windshields?

In this video of a more complex cockpit, belonging to the SR-71, why don't we see any windshields? Were they not required for the SR-71, or are they not captured in this video? If windshields were ...
8
votes
1answer
805 views

What is this plastic device inside the plane window?

I saw this on a recent domestic flight. It was glued on all the windows of the plane, behind the first layer of plastic. What is it and its purpose?
7
votes
2answers
4k views

What is the pressure in a civil aircraft fuselage at flight ceiling?

What is the pressure (in bar) in the fuselage at flight ceiling of large passenger airliners? Is this pressure the reason for the difficulty in having large windows? If so, how can the window size be ...
6
votes
4answers
843 views

Does closing window shades save fuel?

On a 13-hour flight all shades were ordered closed (entire flight—not cool), same airline on a 3-hour route, same thing. Both flights took off in the morning, around 8 AM. Only reason I can think of ...
6
votes
3answers
2k views

Why doesn't condensation form on the inside of airliner windows?

If outside the aircraft is pretty cold and inside the cabin the air temperature is different, why don't the windows become fogged up on the inside?
6
votes
2answers
1k views

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 ...
6
votes
1answer
1k views

Do any aircraft windshields have anti-reflective coatings?

Anti-reflective coatings are used in many applications to reduce glare and prevent double images. Double images in particular are a concern because of the several layers involved in a cockpit window. ...
5
votes
1answer
3k views

Why don't airliners have bigger cockpit windows?

A bigger cockpit window would increase the pilot's vision of a runway. So why can't they be bigger? Note that this question covers cabin window size already, but this question is about cockpit ...
5
votes
2answers
2k views

How can I find out how much a passenger window of a Boeing 737 costs?

Where do I have to look to find out how much a passenger window of a Boeing 737 costs?
5
votes
1answer
324 views

How did the windshield technology evolve?

I would really appreciate it if someone could please explain the differences and similarities between the cockpit windows of a Boeing 747-400 and Douglas DC-3. I am just trying to figure out how the ...
5
votes
0answers
516 views

How much more efficient is an aircraft with no windows? [duplicate]

How much more efficient is an aircraft with no windows (in terms of operation)? Consider the hypothetical situation where you have two aircraft identical in every way, except one of them has no ...
4
votes
2answers
1k views

Do windows on the side of the fuselage increase drag?

I wonder this because I'm not too sure glass is easier for air to travel over than metal.
4
votes
1answer
919 views

Why did the design of the Boeing 247's cockpit windows change for some models? [duplicate]

Have a look at this article on a famed example of the 247. The image at the top is the aircraft during its flights with the RAF, likely some time in 1944. Note the reverse-slope windows that are a ...