Aircraft allow you to travel long distances in a short period of time. Small holes are made in the porthole, why are they needed?
Creation of the first aircraft
Since the second half of the XIX century, people began to work on the creation of aircraft. But the first flight took place only on December 17, 1903. The design flew about 260 meters.
In 1910, Alexander Kudashev demonstrated a biplane of its own assembly, which flew about 40 meters. From this began the first steps in aircraft construction in Russia.
In the first half of the 20th century, different countries began to work actively in this area, trying to create a high-quality aircraft. Howard Hughes, the son of a tycoon who invested a substantial part of his fortune in the design of various aircraft, left a big imprint in history. His company was one of the first to start transporting people around the world using airplanes.
Why do we need holes in the windows of aircraft?
During takeoff, different aircraft models rise to a height in the range from 7 to 13 km. Because of this, the pressure and temperature behind the porthole during the flight are significantly different from those at the airport.
Interesting fact: at an altitude of 10 km, air temperature can reach -55 degrees Celsius. And the pressure is approximately 200 mm RT. Art., while at zero altitude it is in the region of 760.
A strong change in pressure behind the porthole during flight creates a strong load on the hull. If you do not take care of aligning the external and internal conditions in advance, the plane may not be able to stand it: the windows will crack and burst. For this, small holes are made. Thanks to them, air flows from both sides, due to which the pressure is equalized. If this is not done, then you will have to put a more durable and heavy glass.
The holes in the windows are needed to equalize the pressure inside the cabin. Since the plane rises to a great height during the flight, the surrounding conditions change significantly and differ from those inside the structure. Holes help smooth out the difference.
