It is a well-known fact that whether it is a bird flying in the air or a fish swimming in the water, the body will remain streamlined, because the fluid resistance encountered in this way is minimal, which is the inevitable choice of natural evolution.

In the seventies and eighties, the shape of the car always gave people a sense of squareness, which can be confirmed by whether it is in film and television dramas, or the old Poussin that was originally introduced.

The square shape gives people the impression that the mechanical sense is particularly strong, and there is a "robust beauty", which is the most classic reflected in the American cars of the eighties, and the famous Ford Mustang has brought this mechanical sense to the extreme.

As for the 90s, the shape of the body began to change in the direction of roundness, and more emphasis was placed on the sense of technology, and the square shape was gradually abandoned by major automobile manufacturers.

What Zhou Jingming has to do now is to subvert the current car shape and make the body change in the direction of roundness, which is not only an aesthetic change, but also related to the passive safety of the car.

"The streamlined body can indeed greatly reduce the drag coefficient, but if it is really changed in the direction you say, it is not only the shape of the body that needs to be changed, but also the interior space of the car needs to be changed. Su Wangting said thoughtfully.

But anyone who has been exposed to aerodynamics must know the benefits of streamlined body, Su Wangting believes that those car designers will not understand this, but the shape of the body is still not developing towards streamlining, there must be a reason, Zhou Jingming suddenly made such a request, Su Wangting was worried that it would not be easy to achieve.

"I can understand the concerns of all the teachers, so I would like to provide my own thoughts first. As he spoke, Zhou Jingming took out a piece of paper, on which was a sketch of the body he had drawn in advance.

"In the follow-up body design, I want to set up such an anti-collision beam on the inside of the door, so that the thickness of the door will definitely become thicker, in addition, in order to make the side of the body have more space to expand, the structure of the B-pillar needs to be strengthened, and the A-pillar will become thicker and thicker, so that the panel of the whole vehicle will tend to be straight, so that the space inside the body will be large enough. ”

Zhou Jingming said as he pointed to the annotations on the drawings to explain.

"Xiao Zhou, can I interrupt you first?" said Su Wangting with a slight frown.

"Do you have any questions, Mr. Su?"

"What you just said, whether it is the addition of anti-collision beams, or the changes in the A-pillar and B-seat, seem to be related to the collision of the car, but now the crash test of the automobile general seems to be mainly based on frontal collision, I don't understand the significance of making so many changes on the side of the body?" Su Wangting said all his questions in one breath.

Not only Su Wangting, but the rest of the teachers were also staring at Zhou Jingming, and it was obvious that they didn't understand very much.

When Su Wangting asked, he stopped Zhou Jingming, the side impact experiment of the car did not form a unified standard until the nineties, and Zhou Jingming didn't know how to explain it to them.

"I said it now, maybe Mr. Su, you won't understand it too much, why don't you put this point aside for a while, and in the future, I will prove to you through experiments why you want to make such a design. In the end, Zhou Jingming could only answer like this.

If you don't see with your own eyes how destructive the side impact experiment is, Zhou Jingming just said that it was heavenly, and Su Wangting and they would not understand.

"Alright then, you move on. Since Zhou Jingming said so, Su Wangting didn't dwell too much on this issue.

Zhou Jingming nodded apologetically to everyone again, and then continued, "In addition to the above changes, the length of the roofline can also be appropriately increased, because this design will make the posture of a car look more slender and dynamic, thereby increasing the sense of volume, which can be achieved by integrating the roofline and the C-pillar line and weakening the transition relationship between the roofline and the C-pillar." In this way, the image of the C-pillar can be summarized into the roofline, which can visually play the role of an extension of the roof. ”

After speaking, Zhou Jingming turned over the piece of paper, and on the back of the white paper, it was a more detailed body shape drawing, compared with the now popular square body shape, the body shape on the picture, the lines are more beautiful, and the streamlined body makes the car look full of power!

For Su Wangting and others, who are accustomed to seeing the square body shape, the body shape shown by Zhou Jingming has too much visual impact.

"Xiao Zhou, is this kind of body shape contrary to the current public aesthetics?"

"That's right, the current cars are square, according to what you said to design, the body has become so rounded, whether the drag coefficient can be reduced for the time being, whether consumers are willing to accept it is the key. ”

…………

Faced with the doubts of several teachers, Zhou Jingming did not rush to explain, but looked at Su Wangting, "Teacher Su, what do you think?"

Su Wangting frowned, "I think the aesthetic aspect is secondary, the key is that, according to what you said, designed as a streamlined body, with the current level of sheet metal technology, it seems that no lathe can achieve such a processing effect." ”

That's the answer!

The reason why the current body is square is that on the one hand, because the machining level of the machine tool has not yet developed to the point of making it round, on the other hand, because the passive safety regulations and emission regulations have not yet been formed, but in a few years, these two factors will promote the shape of the body to develop towards streamlining, which is an irreversible trend.

If you really want to design a body to meet the requirements of aerodynamics, plus wind tunnel tests, it will not be completed in two or three years, Zhou Jingming's idea is that since it will be such a trend in the future, it is best to prepare early.

"I know all the doubts of the teachers just now, but a model has not been put into the market, it is asserted that it will not be recognized by consumers, it is too arbitrary, as for the limitation of the processing level that Mr. Su said, in fact, there is no need to be too troubled, from design to production, there is still a long time in between, I believe that the development of the past few years will help us solve such technical problems. Zhou Jingming said to everyone with a smile.

Su Wangting didn't rush to make a statement, but thought for a while, and then looked at Zhou Jingming, "You are an employer, since you have made such a request, then let's give it a try in the direction you said." ”

Since Su Wangting said so, the rest of the teachers also acquiesced.

"The change trend of the A-pillar, B-pillar and C-pillar I just mentioned is only a general direction, and the specific changes still need to be accurately calculated by the teachers, and strive to control the drag coefficient to a minimum. ”

"There's another question. Su Wangting looked at Zhou Jingming, "This time the body design, which model is the reference, you can't imagine it out of thin air, right?"

"Shencheng brand car!" Zhou Jingming did not hesitate.

The second-generation Shencheng brand car, Zhou Jingming plans to make such a transformation to the body!

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