Things most people do not know about Airplanes!
The first airplane in the world was made by Orville and Wilbur Wright also known as the Wright Brothers The plane had wings controls and some kind of motor but planes have evolved over the last Hundred years. Current airplanes have features that the Wright brothers couldn’t even dream of. However, there are many things that we might be asking around. These are the most important questions travelers ask around the world!
- Why there is an engine sound even before the plane starts?
Have you ever noticed that there’s a sound when you’re waiting for the last passenger to board the plane even though the engines aren’t powered up yet but something is running? That’s the sound of the auxiliary power unit or APU. The APU is what provides electricity to the plane temporarily between the times the plane unplugs from the terminal until it is ready for takeoff. The APU is usually a small turbine that powers a generator for electricity and a compressor for air pressure. The APU powers everything from the cabin lights and fans up to starting the main engine, it even provides a fire protection system and this system uses less fuel than running the main engine since it’s only designed for cabin operations not for driving the plane. The flight crew will start the APU before letting any passenger board so you can sit in comfort and safety while they prepare the plane for departure. if you pay attention you can see the lights dim temporarily and here when they switch from terminal power to APU now you know why your movie was interrupted for a few moments!!
- Why foods taste bad?
If you think airline food is bad is because everything on board a plane is conspiring against enjoying the food. Scientists have studied this and it’s not just your imagination, first, the noise of the engines dulls your ability to taste sweet things. Food scientists at Cornell found out that sound levels at 85 dB the same level as airplane engines reduce the effect of sweetness on taste buds and that fan over your head is blowing air that is much drier than you’re probably used to at home; lower humidity means you can’t smell as well on top of that as the plane climbs the cruising altitude, the pressure inside drops; you feel that when you pop your ears that pressure drop affects your sense of taste too. So next time you wonder whether to order the fish or the chicken just order a something salty such as a tomato juice!
- Why is there a hole in my window?
The hole in your window is important, since cabin pressure is so important you might think a hole in your window is a good thing but if you look closely you’ll see every window has one about the size of a strand of spaghetti; that hole lets the pressure between the cabin and the air between the pane equalize like your house windows, the layers insulate from the extreme cold of high altitude flight but unlike your house, airplane windows have to deal with large changes in pressure as the air climbs and descends. There are actually three layers in an airplane window, the inner pane is plastic and just protect the glass from scratches and the middle pane has the small hole that lets the air between the panes expand and contract but still provides insulation; if you didn’t have the middle pane you’d be looking through a layer of ice as the moisture in the cabin air condenses on the cold outside glass
- Why there are ashtrays in the bathrooms?
The FAA (Federal Aviation Administration) banned smoking on planes years ago, but if you look closely you will notice that airplane lavatories still have ashtrays in them. The reason is that airlines and the people who design planes know that despite the no-smoking policies and signs all over the plane, at some point a smoker will decide to light up a cigarette on the plane. The hope is that if someone violates the smoking policy, they will do so in the relatively confined space of the bathroom and dispose of the cigarette butt in a safe place—the ashtray, not a trash can where it could theoretically cause a fire. If you do smoke in the bathroom, expect a massive fine!
- Why cabin crews dim the lights when a plane is landing?
When a plane lands at night, cabin crews will dim the interior lights. Why? In the unlikely event that the plane landing goes badly and passengers need to evacuate, their eyes will already be adjusted to the darkness. As a pilot explains “Imagine being in an unfamiliar bright room filled with obstacles when someone turns off the lights and asks you to exit quickly.” Similarly, flight attendants have passengers raise their window shades during landing, so they can see outside in an emergency and assess if one side of the plane is better for an evacuation.