With the continuous improvement of living standards, people's demand for travel is also increasing.
Among the many modes of transportation, the plane is undoubtedly one of the most popular choices.
When we say goodbye, we often say a good ride to relatives or friends who are about to leave.
This is a very common blessing.
However, when bidding off at the airport, many people are very taboo about this word.
What's going on?
Is such an idea thoughtful or unfounded?
Airplanes are one of the indispensable means of transportation for human mobility in modern society.
The advent of aircraft can be said to have profoundly affected and changed human life.
At the same time, it also realizes the great ideal of countless people throughout the ages for soaring above the blue sky.
Therefore, it is not an exaggeration to call the airplane the most significant invention of the early 20th century.
Although it refers to the principle of bird flight, the aircraft is not at all as light and athletic as birds.
Nor will it flap its wings like a bird.
Under normal circumstances, the weight of ordinary passenger aircraft can reach tens of tons, or even hundreds of tons.
How does such a behemoth achieve air flight?
In simple terms, for an aircraft to fly in the air, it must solve the two problems of ascent and forward.
This involves knowledge of fluid mechanics.
The principle of the aircraft forward is well understood.
Engines are the main source of power for aircraft.
It is able to drive the forward traction generated by the rotation of the propeller.
This traction can propel the aircraft forward in the air.
The ascent of the aircraft is explained by Bernoulli's principle.
As the plane advances, the huge wings cut the air into upper and lower parts.
The air above the wing flows more slowly than the air below the wing.
This causes the air pressure above the wing to be less than the air pressure below the wing.
So the plane gets an upward lift.
We know the usefulness of the wing, but what is the role of the tail wing?
In fact, in the process of navigation, the direction and altitude of the aircraft must rely on the tail wing to control.
Without the tail fin, the aircraft would continue to fly upwards under the influence of lift.
From these principles, the wind does play a very important role in the flight of the aircraft.
So when sending off at the airport, why would anyone be afraid of the word all the way?
In fact, this is related to the take-off and landing of the aircraft.
When taking off and landing, going against the wind is the best option.
During the take-off process of the aircraft, the headwind can increase the lift and shorten the take-off and sliding distance of the aircraft.
During the landing process, the headwind can increase the resistance, reduce the flight speed, and shorten the distance of the aircraft landing.
In addition, whether it is at take-off or landing, the flight speed of the aircraft is relatively slow and the stability is poor.
At this time, if you encounter a strong wind measurement, the aircraft will easily tilt.
In this way, the downwind is indeed very unfavorable for the take-off and landing of the aircraft.
So should a tailwind be a no-no when flying?
Of course not.
Judging from the take-off and landing process of the aircraft alone that the headwind is better than the downwind is too one-sided.
In fact, for a pilot, encountering a big downwind during the flight is a very happy thing.
In the event of a tailwind, the aircraft is pushed forward by the wind, which can take less time to reach the destination.
At the same time, it consumes less fuel.
However, now we don't have to worry about whether it is better to fly downwind or headwind.
With the development and progress of science and technology, aircraft have also undergone countless updates and replacements.
Compared with the past, the current aircraft has greatly improved and improved in terms of speed, weight and stability.
The influence of wind direction on aircraft flight is also greatly reduced.
Of course, Chinese culture is broad and profound.
For an idiom, we naturally don't have to dwell too much on the literal meaning.
The downwind is itself a word of good wishes.
It expresses the hope that your relatives or friends will not have any accidents during the journey and will be able to reach their destination safely.
There is really nothing wrong with using this word when sending off.
So don't dwell too much on it, and don't think too much about it.
For those who are about to fly.
Memorizing safety precautions, fastening seatbelts during the flight, and following the instructions of the flight attendants are the most important things to do.
Only if every passenger successfully passes through this flight to reach the destination is the perfect interpretation of the smooth wind.
Have you heard of any other taboos during airplane flight? Is there any justification for these taboos?
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