Last Updated on January 7, 2021
#3 – The Hum You Hear While You Board the Plane
©Escape
Every time! You can’t help but hear the humming sound every time you board the plane. This sound can be heard even if the engines aren’t running.
That’s because the plane is running. That sound you hear is produced by the plane’s APU, or auxiliary power unit. This unit is responsible for keeping the plane’s electricity working at all times.
When the plane is standing still getting ready for everyone to board this system stays plugged in. It is unplugged right before takeoff and the plane switches to its main power supply.
#4 – Tomato Juice
©Travelandleisure
During the flight, the sound of the engines affects our taste and smell receptors, making us feel that the food we’re eating is dull to the taste. The receptors are further affected by the high altitude and the dry air inside the cabin.
So if you find yourself ordering a salty tomato juice from the menu, don’t be amazed at yourself. All the elements that work against your sense of taste and smell are to blame because they leave you craving for something salty.
#5 – Window Shades Open During Landing and Take-Off
©Travelandleisure
Flight attendants like to tell people to open their window shades during landing and takeoff. They don’t get any satisfaction from telling you to do that, they tell you so because it’s protocol—it is part of the airplane safety instructions.
The reasoning behind this is as follows: if a plane loses power during an emergency, the windows are the only source of light available. That is the only way the flight crew can see inside the cabin.
#6 – Winglets
©Business Insider
Airplanes try to fight all kinds of forces while they’re in the air and especially during takeoff and landing. Some of these forces are called wingtip vortices, which pull on the tips of the wing and can topple the airplane.
Engineers came up with winglets as a solution. They are put in place to prevent this phenomenon from ever happening and causing a catastrophe. Thank God for the wisdom of engineers.
