Questions tagged [windows]

Used for questions pertaining to aircraft windows.

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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
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 ...
58
votes
2answers
15k views

Why do airplanes have rounded windows?

Why are the windows of an airplane usually rounded at the edges?
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?
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 ...
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.
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?
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?
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 ...
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 ...
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 ...
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
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 ...
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 ...
0
votes
1answer
207 views

Windshield to prevent laser strikes [duplicate]

Is it possible to prevent/avoid laser beams with new technologies on windscreem?
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 ...
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, ...
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?...
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
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 ...
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, ...
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.
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 & ...
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 ...
1
vote
1answer
508 views

Do jets use tinted windows?

For cars, I've heard of LLumar used as window tint. Do jet aircraft use window tint? If so, what type of window tint do they use?