Questions tagged [temperature]

The intensity of heat found in an object or living thing.

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28
votes
2answers
12k views

What is the typical temperature of an airliner's hull during flight?

Some high-speed military aircraft like the SR-71 had real heating problems, but airliners also travel almost at the speed of sound, use most of their fuel to make up for frictional losses, so I would ...
10
votes
2answers
6k views

How hot would pressurized air get if the air conditioning failed?

I understand that aircraft are pressurized by pushing air into the cabin using the engines, and using a valve to let the air escape at a controllable rate thus achieving the desired pressure ...
22
votes
7answers
5k views

What sort of issues related to extreme heat (115°F, 46°C plus) would prevent takeoffs or landings?

I recently flew into and out of McCarran Airport Las Vegas (LAS) and a local told me that they never report the air temperature at the airport above 115°F (46°C) because the FAA does not allow ...
44
votes
6answers
20k views

What are some of the differences between piston engines used in aircraft and automobiles?

What are some of the differences between piston engines used in aircraft and automobiles? It seems aircraft engines are much more expensive, I imagine some of that cost must be due to the more ...
15
votes
1answer
3k views

Why can't Norwegian's Boeing 787 operate from Vegas during hot weather?

In a German news article it was stated that the additional weight (Norwegian puts 291 passengers on their 787-8) leads to operations restrictions in Las Vegas when temperature conditions exceed 40°C. ...
18
votes
1answer
81k views

What is the difference between OAT, RAT, TAT, and SAT?

When I first started flying jet aircraft, I found different instruments that measure temperature in different ways and it was quite confusing. What is the difference between Outside Air Temperature,...
10
votes
3answers
77k views

How is pressure related to air density?

This is confusing to me: Since pressure increases with temperature (I don't know why), how can air density decrease with temperature. In a hot day then pressure would increase and air density ...
36
votes
3answers
71k views

How do aircraft keep fuel from freezing while in flight?

On aircraft which fly above 30,000 feet, the temperature can often can get to temperatures below Jet-A's freezing point. For example: at 36,000 feet the standard outside air temperature is -56.5°C (-...
20
votes
1answer
6k views

How are temperature differences handled in a jet engine?

Given the graph in this answer, the temperature are quite high inside a jet-engine, even greater that many metal's melting point. I understand high core temperature are efficient. A jet engine is ...
20
votes
3answers
4k views

How do fast-flying aircraft avoid overheating?

As a follow-up question to What is the typical temperature of an airliner's hull during flight? I wonder how very fast airplanes, such as the SR-71 mentioned, avoid overheating with a total air ...
12
votes
3answers
2k views

Is the altimeter setting corrected for temperature?

In an ATIS or AWOS/ASOS recording, is the reported altimeter setting corrected for temperature? I think it must be, because on a hot day, the altimeter should still show correct field elevation. If ...
8
votes
1answer
2k views

What is the average temperature in the luggage hold of a passenger plane? [closed]

I am asking this seemingly odd question, as we'll have to transport some medicine in our luggage and it's supposed to be stored at temperatures between -8C and <...
9
votes
1answer
23k views

What appears on EGT Gauge if the mixture is rich or lean?

I have some questions on interpreting Exhaust Gas Temperature (EGT) readings. Can you give me some input on: What appears on EGT Gauge if the mixture is lean or rich? what is the normal range, ...
6
votes
1answer
280 views

What is the temperature of intake air at several speed of sound intervals from 1x to 10x?

I watched a YouTube movie about Reaction Engines development of the Sabre engine which main feature is cooling intake air. However, I cannot find an overview of the temperature of intake air at ...
4
votes
4answers
11k views

Is there a maximum or minimum temperature for take-off and landing?

Is there a maximum or minimum temperature that a plane can take off or land at?