Oftentimes, we may get curious about the little things we see around us. So, we start to question ourselves about what their true purpose is. Then, we try to do our little research to find out the truth behind these little things. Well, have you ever gotten curious about what that little hole in airplanes is for? Allow us to give you a thorough explanation of its very important function.
First, let us define Air pressure. This is the weight of the atmosphere pressing down on the earth.
Air pressure drops as you get higher but airplanes are designed to maintain air pressure at a safe level inside the cabin so, the air pressure outside an airplane is much lower that it is inside. The difference in air pressure puts a lot of physical stress on airplane windows.
This is why airplane windows are designed to consist three separate panes on its windows namely the outer, middle, and inner. The outer pane is responsible for dealing with the air pressure difference thanks to the tiny hole in the middle pane which is also known as the “bleed hole” whose primary purpose is to balance air pressure, a small gap between the middle and outer panes is created.
The “bleed hole” allows pressure to balance between the passenger cabin and the air gap. This further means that the outer pane is responsible for taking all the pressure while the middle pane acts as a fail-safe, and the inner pane is “non-structural” but it helps to protect the middle and outer panes from damage that may be caused by passengers.
Additionally, the bleed hole also serves as a means to release moisture from the air gap which prevents the window from fogging up or frosting over.
So, now a mystery is finally solved! Go and share this with your friends so they too can be informed!