Recently, a friend took a plane to Hainan for a tour, and before leaving, I drove her.
When I got to the airport, finished the formalities, and was ready to board the plane, I waved and said:
All the way to Sanya, remember to give me a call Ha!
Later, after she arrived in Sanya, she did call me and said:
Arrived, the evening arrived!
I say:
That's good, or the plane is fast! When you're tired of flying, take a break!
My friend, suddenly interrupting me, said:
After sending off at the airport, remember not to say "all the way to the wind"! Remember! Don't say it again!
When a friend said this, it suddenly made me curious, good end, why can't I say: all the way to the wind?
Besides, when we send others off, we say: All the way to the wind, it is already a customary habit, never heard of it, there is no way to say "all the way to the wind"!
So I asked curiously:
Why can't I say it? Isn't that a very normal statement?
When my friend heard me blindly ask questioning, he said without anger:
Can't say, is can't say, my mom said, travel by plane, to the airport to send people off, can't say all the way to the wind, not so much why, my mom said! Unlucky!
Well, a "bad luck" left me speechless!
Seeing that my friend was not happy, I did not dare to ask any more questions.
But, naturally curious, how could I let go of this "interesting" question?
So I told a friend who was teaching aircraft design and engineering at the university about my troubles and problems.
After my friend listened, he smiled and said:
Haha, this is not a problem of auspiciousness or inauspiciousness, but a problem of our profession!
My friend's statement, at once, aroused my interest again, so I asked:
What's the professional problem? So mysterious?
The friend laughed and said:
Because whether it is take-off, or landing, the aircraft will generally choose the headwind, when the wind is upwind, the two wings of the aircraft can produce more lift, so that not only fuel saving, but also, more safe!
I was a little skeptical of my friend's statement, so I asked:
No way? Doesn't it say that downwind is more labor-saving? How could it be safer to headwind?
Seeing that I asked such a low-end question, the friend shook his head and sighed:
Alas, it seems that you really do not understand, airplanes, not sailboats, airplanes are so heavy, hundreds of tons of it! The downwind does not produce much help, on the contrary, if the downwind takes off, then the aircraft may need to "help fly" on the runway for a long distance to fly into the sky, that is, really unsafe, because it is easy to rush out of the runway.
Seeing that I was a little dazed to listen, as if I understood something, my friend added:
Oh, in fact, it is very simple, this is the same as flying a kite, you think about it, when you fly a kite in the spring, is it easy to fly against the wind, or is it easy to fly downwind? The truth is the same! The plane takes off against the wind and there will be more lift! That's safe!
As soon as my friend said that, I understood!
It seems that this is really not an auspicious or unlucky thing, but there is a certain scientific truth!
It's just that when the information is spreading, it is often misinterpreted, and even spread to the gods, let the friends restore it, all of a sudden, Mao Sai suddenly opened!
Oh, it really is: listen to jun's words, better than reading ten years of books!
It seems that in the future, travel by plane, go to the airport to send off, really can not say all the way!
So, the question arises: so what to say? Welcome to leave a message to discuss!
I am the headline number: the window of the place, more travel geography, welcome to follow me.
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