Why can't you change seats on the plane? Must you board the plane through the left door? The truth is not that simple

Ding~ Welcome aboard

The smiles of the flight attendant brother and sister

Is there a journey that warms you up?

In fact, there are many things to learn when flying.

Let me take you to understand it together

When preparing to board the plane

Have you discovered such a phenomenon?

Passengers enter the aircraft from the left side door.

But there is also a door on the right side

Why not use it to board the plane?

Actually, boarding from the left side

It is a custom inherited from the shipping industry.

In the past, the rudder of a ship was installed on the right side of the ship.

It would be inconvenient to dock on the right side.

So we always land from the left side.

This custom has been adopted in the aviation industry

It can be said to be a dream linkage between land and sea

When passengers board the aircraft from the left door

The right door is reserved for the catering truck, luggage truck, and fuel truck to work.

This way the aircraft can work in coordination on both sides

Greatly improved the efficiency of the airport

Wait until passengers board the plane

Sometimes there are a lot of empty seats.

But the flight attendants usually don't

Allow passengers to change seats at will

First of all, it may be because of the different cabins.

The price will be different

But ultimately, safety is what matters

During the entire flight, except for the flight attendants and pilots

There are still a group of people who are silently guarding us

That's the air cargo loader.

Their task is to scientifically arrange the

Position and weight distribution of passengers, cargo and luggage

Keep the aircraft's center of gravity within the safe range

Also save oil as much as possible

Ensure that the aircraft arrives at its destination safely and economically

If you insist on changing seats, it will inevitably disrupt the balance of the plane

If the passengers are all at the front

Increased nose weight

The climb will be difficult

If the passengers are at the rear end

Tail weight

The plane may hit the tail when landing.

This will bring great safety risks to the entire voyage.

At an altitude of 10,000 meters

The air is very thin

Where does the air that people breathe in the cabin come from?

In fact, it comes from the atmosphere outside the cabin.

It just enters the cabin after being filtered and heated.

Air conditioning system in aircraft

It also circulates the air in the cabin.

Ensure fresh air in the cabin

Many people like to use portholes to watch the scenery from high altitudes.

You will find that the windows of the aircraft are all rounded.

This is because the rounded windows evenly distribute the pressure.

This way the windows won't break easily

In addition, the small round holes on the windows also have this function

The small round hole is actually the breathing hole

The portholes of an aircraft are generally composed of an outer layer, a middle layer, and an inner layer.

The breathing hole can balance the air pressure in the middle layer, outer layer and cabin.

Prevent inner layer from breaking

It can also prevent condensation on windows

Ensure clear view

When the plane stabilizes

Many airlines provide in-flight meals to passengers.

But when it comes to airline meals

Many people associate it with "unpalatable"

Why do people think airline meals taste bad?

Typical airline meals

All prepared before takeoff.

Then it is reheated and distributed to passengers

Green vegetables are difficult to preserve after heating

So it’s usually root vegetables like carrots and potatoes

Secondly, in order to meet the needs of most passengers

Meat is usually chicken and beef

And the flight attendants need to heat hundreds of meals in the oven

Some may heat unevenly

Affects the flavor of the food

The human body itself is also one of the factors that make airline meals "unpalatable"

The air pressure changes after the plane takes off.

To extend the life of the aircraft

The humidity in the cabin is also kept low

This will greatly reduce the sensitivity of human senses

Decreased sense of smell and taste

There will be a phenomenon of chewing wax

So sometimes it’s not the airline meal’s “fault”

Landing at night

The lights in the cabin will dim

This is not for the convenience of everyone to watch the night view of the city

It is convenient for passengers to get off the plane

Adapting to the light intensity outside at night

You can see things outside more clearly

I hope you can have a good time on your next flight.

Observe the little knowledge introduced by the editor

I also wish you all a happy and safe trip every time!