Many fellow citizens had to pay attention to the fact that many passenger planes have a hefty pipe at the top of the fuselage in the very tail. It can be assumed that it has something to do with the engine of the car. Some should also remember that it was through this pipe that the hero of the Soviet film "The Crew" got out onto the fuselage of the plane. Hence the second question: can such a trick be done in practice?
Those who watched the 1979 Soviet film "Crew" should remember how the fuselage was damaged during the flight. As a result, one of the main characters got out of the plane through a mysterious pipe in the tail of the car and tried to close the crack with hammer blows. Of course, the whole scene is exclusively the author's fantasy and has nothing to do with the real world (although at the time of release the film looked cool and dramatic). The most important thing is that you cannot get into the chimney from the cabin or the luggage compartment of the aircraft.
Why? Because it is a structural element of an aircraft's jet engine - an air intake. It is necessary to maintain the stable operation of the gas turbine engine. The air intake slows down the air before it enters the compressor, where it is subsequently compressed, as a result of which jet thrust is formed, jet thrust, which sets the aircraft in motion.
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Depending on the model and series, the aircraft can be equipped with one, two or three air intakes in the tail section. There are also models that do not have such at all due to the absence of a gas turbine engine in that place. Moreover, there is an air intake on every engine on the wing of the aircraft. Just in view of a number of design features, they look less impressive.
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If you want to know even more interesting things,
then it is worth reading about how in the USSR they tried to create a flying submarine.
A source: https://novate.ru/blogs/060820/55584/