Military industrial hegemony

Chapter 484 Difficulties
"It's good to understand." Jiang Chen looked at several people and smiled.The few people in front of him are all the children of the factory, and they are also the children of the cadres. Jiang Chen didn't like them at first, because the preconceived notions of later generations have made Jiang Chen label them.But after such a long time of contact, these friends and brothers are really good.They understand the importance, right and wrong, and more importantly, they firmly believe in justice, which is invaluable to the children of cadres.

"This is just a problem with the transmission." Dongzi continued: "Because it is an off-road vehicle, and it is of military standard, the requirements for various aspects are very high. Especially this chassis is in the middle. You know this car There are currently two major classifications of car bodies in the world, namely load-bearing body and non-load-bearing body. The advantages of load-bearing body are simple structure, easy realization of low chassis, spacious interior space and low cost, so many cars are used. The disadvantage is that The rigidity of the body is poor, especially the torsion resistance. Off-road vehicles need to output more torque to climb mountains and ridges. This structure is obviously inappropriate. There is not much room for modification and upgrade due to structural problems. To deal with relatively strong For off-roading, it is still necessary to choose a car body with a girder structure, that is, a non-load-bearing structure. In this way, two steel beams are added to the body structure, and the body shell is not subjected to torsion, so the convertible can be realized, and it can be opened in any posture of the body. The door can be opened. Most off-road vehicles now have this structure. The advantage of the non-load-bearing body is that it has strong torsion resistance and a solid body. Even if a serious collision occurs, it is difficult to damage the body structure. The disadvantages are also obvious. The weight is heavy, the girder will occupy the space in the car, and the manufacturing cost is relatively high. Moreover, the potential of this modification package is very free, and it can be adapted to different body and model modifications. That is to say, when there is After this chassis, it will not be a problem for us to develop other off-road models.”

"Okay, Dongzi, I have learned a lot these days, even the load-bearing body and the non-load-bearing body." Jiang Chen joked with a smile.

Dongzi also laughed again and again when he heard the words: "I am playing a big sword in front of Guan Gong, that is, I have learned a little bit of superficiality these days, and I am showing off in front of you."

Jiang Chen shook his head and said, "It's been a long time since I've changed jobs. This is good. As a manager, if you can understand our research projects, you'll be able to better control the direction of the company's development. You've done a good job in this area, so keep going. "

"Okay." Dongzi nodded.

"En." Jiang Chen looked at Dongzi and asked: "Then what stage is our research on the off-road vehicle's territory? Tell me, so I have a bottom line in my heart."

Dongzi shook his head and said: "The progress is not very smooth. You know that the transmission we mentioned earlier is a structure in the chassis itself, which belongs to the transmission system. Like him, there are also the clutch, universal transmission, The main reducer, differential and axle shaft and other equipment. They are jointly responsible for the power from the car engine to be transmitted to the driving wheels by the drive train. Responsible for the deceleration, speed change, reverse, interruption of power, inter-wheel differential and Functions such as inter-axle differential speed work with the engine to ensure the normal driving of the car under various working conditions. Just like the problem we encountered on this transmission, it is still a problem of mechanism design. What kind of structure The most safe and reliable, what kind of structure is difficult, this is a very complicated technical problem. There is another problem that is also our long-standing problem, that is, this and the material problem. What characteristics should the material have in that aspect, whether it requires strength or requirements? Toughness, or need to be strong, these are the problems we need to study and solve. And most importantly, whether our material can achieve the strength and toughness it can withstand, these are also what we need to study. This is also our new One of the weaknesses of the factory is that everything has to be started from scratch, unlike some large factories that have been established for many years and have a large amount of technology accumulation. What you need can be directly retrieved from their technical database and used directly. , the entire designer only needs to consider the structure and style. Unlike our technicians, there are too many things to consider.”

"Well, we do have such a problem. This is the reality. But we also have an advantage, that is, we can learn from the manufacturing experience and technology of many successful car designs. This is our weakness on the one hand, and our advantage on the other. So don't be so pessimistic, our nation is a nation that is good at learning, I believe we will catch up in a short time." Jiang Chen comforted with a smile.Jiang Chen, who came from later generations, knows that in later generations, we really began to rise in this way. We learned many things from abroad, and then caught up and surpassed.The most famous ones are the high-speed rail and the Su-27 we produced.Our high-speed rail is the first technology introduced from Japan, and then we are learning, then imitating, innovating, and finally surpassing directly to become the world leader.This has developed into a new business card of our country.When it comes to high-speed rail, we must mention our country, which can be said to be the pride of the Chinese people.There is also a very famous example in the military industry, that is, the Su-27 fighter plane we imported from the Soviet Union, from the initial purchase, then to the organization by buying parts ourselves, and then making part of the localization, and then developing and innovating.In later generations, except for the perennial engine problem, all other parts have been made by ourselves.And the overall performance of this fighter is already far ahead of the original Su-27 fighter and its development models.As a result, Russia is now somewhat unwilling to sell fighter jets to our country, because they are afraid that their technology will be quickly learned by us and surpassed.

"I understand." Dongzi nodded and said: "Other problems are the same as those mentioned before. The biggest problem we have now is the problem of materials. For example, the frame and body of this off-road vehicle Bridges, wheels, and suspensions. The frame, axles, wheels, and suspensions of the car are all due to this material problem, and progress is slow. In terms of structural design, we can say that because we can learn from other vehicles But with this material, there is nothing we can do. We cannot intuitively understand this aspect. Moreover, this aspect of information is strictly kept secret by various companies and even in the country, and we have no way of obtaining it. Even if we buy it with money, they won’t sell it to you. Even if they sell it to us, the price will be sky-high.”

Following what Dongzi said, there was a dignified atmosphere in the office. Everyone frowned and fell into deep thought.

(End of this chapter)