Why in the airplane makes a small hole Bashny.Net

Anyone who has ever flown in an airplane, certainly paid attention to the strange hole in the airplane. Many even thought that this hole is out, although this is certainly not the case. The site has decided to shed some light on this mystery. "Window" in modern airliners are quite complex structure. They are made from several layers of durable transparent plastic, forming a kind of "glazed". Typically, the outer glass must possess high strength to ensure the integrity of the aircraft. It can withstand enormous loads and lately is made from high-strength acrylic plastic.



internal "slides" are not designed for high loads. They serve for better sound and heat insulation of the cabin, creating an air gap between them and the outside window. Domestic glass is not as durable and made from cheaper plexiglass. Therefore, there is a risk that in the event of a large pressure difference between glasses and cabin interior "piece of glass" can not stand and burst. A small hole helps to normalize the pressure, removing inter-glass space of excess air, or in the reverse direction.





via marketium.ru/dyrochka-v-illyuminatore/