Why It's So Cold Inside a Plane

Have you ever thought about how low the temperatures in the passenger cabin usually are? Is there an aeronautical reason for this suffering? One can think that by setting such freezing temperatures inside the plane, airline companies are just trying to help passengers acclimate to different weather conditions. After all, the weather might be way colder in the place they're heading to.

In fact, despite how ridiculous it may sound, chilly winds are blowing through the passenger cabin to provide you with maximum comfort! But what about the passenger cabin's dryness? Is this gripe unreasonable as well? And isn't that too cold for the animals that are transported in the cargo hold? Let's figure out!

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TIMESTAMPS:
What temperature is in the cabin? 0:50
What about its dryness? 3:45
What are the conditions in the cargo hold? 4:47
Why do stowaways rarely survive this experience? 5:46
Why airplanes leave white trails 6:27

#planes #aviation #brightside

SUMMARY:
The temperature in the cabin isn't as cold as it may seem. It's normally kept between 71 and 75 degrees, and rarely drops lower than 64 degrees. In fact, that’s the average temperature in most office buildings.
Passengers tend to lose consciousness in the air more easily than on the ground, due to a special condition called hypoxia.
Just to be on the safe side, airline carriers prefer to keep temperatures in the passenger cabin a bit lower than normal.
Newer aircraft have more advanced thermostats, which can regulate cabin temperature more precisely.
The air conditioning on the aircraft is always turned off to save fuel until the plane leaves the ground. As a result, the combined body heat of all the people onboard, plus the absence of the air conditioning, can warm the cabin up to an uncomfortable temperature.
Even pilots admit that the average passenger cabin is incredibly dry and, thus, dehydrating. It has just 12% humidity, which is way drier than most deserts!
Many people are surprised to know that the hold is pressurized, just like the passenger cabin. On top of that, to air-condition the cargo hold, they use the same air as in the cabin.
If a plane is transporting goods that are sensitive to temperature, there are special cargo bins with temperature controls inside.
The exhaust from the plane is humid and hot, and when it mixes with the frigid air and low pressure at cruising altitude, the water vapor not only condenses, but can also freeze.
Contrails can vary in their thickness and duration, depending on the humidity and temperature of the atmosphere, as well as the plane's altitude.
Another surprising phenomenon you've probably witnessed is two planes flying nearby, but with one of them leaving behind a thick, long trail, and the other - an almost invisible one. The reason may lie in the fact that different planes have different engines.

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