When Li Fanyu received the news from the general assembly, saying that the B-01 had killed the shaft connector of the transmission system during the first test, he also smiled bitterly. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Damn, what should I do if the torque is too much......?

The engine has been made, is it still possible to let the master reduce the torque?

But when he heard that he had asked him to help design a drivetrain to match the B-01, he was happy.

This is a bonus!

Originally, I thought that the meal ticket of one engine was fat enough, but now because the transmission of the fourth-generation main battle tank could not match the strong torque of the B-01, Shengsheng picked up another transmission system.

Hehehehe......

That's the perk of technological breakthroughs!

After taking over the design and development of the transmission system, the tank project has undergone a fundamental change so far.

This is no longer simply to provide the engine assembly for the General Armament Department, B-01 plus the transmission system, these two parts are contracted as a whole for the power system of the fourth-generation main battle tank, which belongs to the four-generation tank to provide a complete set of power solutions!

That is to say, if these two parts are completed, then if the fourth-generation tank is mass-produced and installed, then its power performance is the credit of Zhengxin.

That's awesome.

Not to mention how much this order is worth, just talking about the fact that a private enterprise provides power solutions for the army's new main battle tanks, its symbolic significance and influence on Zhengxin in China and the world are immeasurable!

There are a few companies in the world that can have such capabilities, and the left and right add up to no more than two slaps!

Thinking of this, Li Fanyu's eyes had narrowed slightly......

Now that the entire power solution has been handed over to Zhengxin, the existing four-generation tank transmission system no longer has any sense of keeping it secret from Zhengxin. Shortly after receiving the call, a hard drive was delivered from the seven divisions, which contained all the design data for the existing drivetrain.

When Li Fanyu browsed through the special computers provided by the seven places, he couldn't help but feel a toothache.

This set of old-fashioned transmission ...... Can also be placed on top of fourth-generation tanks?

He didn't know that in fact, Lu Mingde handed over the transmission project to Zhengxin, not only because the torque of the B-01 engine was too large, and the existing transmission could not withstand it.

It is because of Zhengxin's strong R&D strength in the research and development of Longxin B-01 that Lu Mingde has higher requirements for the fourth-generation tank!

The heart disease of the tanks of the Chinese dynasties is not only caused by the engine. The drivetrain is also a long-standing hard wound;

During the development of the third-generation main battle tank, the final assembly intended to introduce the LSG3000 transmission system produced by the German ZF. However, this transmission had to be applied to the manufacture of weapons, so at the last moment of the negotiations, the German government intervened and disrupted the cooperation. The previous import of related products and the introduction of technology were interrupted for a time, resulting in the obstruction of the transmission of the third generation of tanks.

850462 In order to complete the third-generation tank project codenamed 9910, Lu Mingde took the lead in gathering the backbone R&D strength of the scientific research institute to develop the transmission device of the third-generation tank.

But there was no particularly good way at that time, and the second-generation tank at that time had been in service for more than fifteen years, and it was about to be replaced. Three generations are already ready to fly. Time was tight and the task was heavy, so Lu Mingde had to improve the transmission device of the T-72 and came up with a set of mechanical star transmission devices with only two and a half generations.

This unit still uses the traditional mechanical transmission structure of the old tank, with hydraulic controls, and the transmission consists of a gearbox, a side gearbox, and a coaxial transmission. Engine torque is transmitted to the two-sided planetary gearbox via a fixed gearbox and drive shaft, while the compressor is also driven, and the generator and fan are started.

The side gearbox is a planetary structure with a friction clutch with seven forward and one reverse gears, which are manually hydraulically operated.

What does such a drivetrain look like?

In short - better than nothing.

The technical basis of this power system is the T72 transmission system that the Soviet Union began to develop in 1967, and 30 years have passed since the development of the Type 99 tank.

Due to the old technology, the operation of this drive system is very cumbersome. The driver has to change gears frequently according to different driving conditions and terrain, and it is extremely laborious to control the direction of travel through two hydraulic tie rods, which is extremely physically exhausting to the driver, and it is easy to get mentally fatigued.

But that's not all, the driver steers with the help of a gearbox partner on the inside.

What is the form of this shift?

That is, the driver in the process of the tank situation, lowers the transmission gearbox on the steering side by one gear, so that the two tracks of the tank have different speeds. The speed difference between the two tracks is used to achieve the corresponding radius of steering.

And what if the tank finds a dung pit in front of it while moving and wants to turn around?

You can't rush this, you have to take it one step at a time.

First, the driver has to press the brakes on both tracks and then pull back the levers. On the track on the safe braking side, drive the track on one side, so that the brake track can be centered on the minimum radius of the tank to steer.

How much trouble does this have to be?

Therefore, it is not unreasonable for tank drivers to be promoted to the third non-commissioned officer in general. Novices can't hide from the dung pit when they encounter it, so they may go directly to Zari, and they have to be old drivers to avoid it skillfully.

But even so, this transmission system has made great progress compared to the Type 59 second-generation tank and the mechanical fixed-shaft transmission system on the Type 96 second-generation and a half tank.

It was also the successful completion of the research and development of the transmission system of the Type 99 tank that the research and development task of the fourth-generation tank was won by the 85462 Research Institute.

And because there is no independent technology, the transmission system of the fourth-generation tank has to be upgraded based on the 99 type. So what Li Fanyu saw was still the old-fashioned technique of changing the soup without changing the medicine.

Thinking about the results of the Type 99 in the international tank competition, Li Fanyu couldn't help but be in awe.

But this tribute is not for the tank, but for the driver!

Relying on the naturally weak 150HB engine and such a transmission system, the Type 99 can achieve a fairly good ranking in the international tank competition......

Veteran drivers who went abroad to participate in the competition, you ...... Great work!

The transmission system of the tank is simple and simple, if it is simply to make it able to withstand the strong torque of the B-01, then Li Fanyu does not need to design it himself, he only needs to use the existing transmission system of the 850462 Research Institute and change its material to No. 5 X aluminum alloy.

But it was clear that he wasn't going to do that.

A good horse with a good saddle.

How can an engine with a horsepower of nearly 2,000 hp and a maximum torque of 7,000 Nm be used with such a backward transmission?!

After reading the information, Li Fanyu directly extracted the design drawings of the tank chassis and the parameters of the performance car in the hard disk with a pen and paper, and returned the notebook to Wang Xiang along with the hard disk.

Seeing that Li Fanyu not only returned his computer, but also took back the hard drive, Wang Xiang was puzzled;

"Dong Li, this is for you as a reference for research and development, you don't need to send it back to me. ”

Li Fan smiled foolishly, "No need, I can't use this game." ”

"What's the matter? Is it because the encryption program is cumbersome? If you're not familiar with the operation, you can call me. ”

Li Fanyu shook his head, "That's not true, it's just that this transmission system is too old and has no reference value for me." ”

“……”

After saying this, Wang Xiang looked at him several times for a long time and stopped talking, almost holding himself out of internal injuries.

This drive system took more than half a year to optimize and improve the 850462 Research Institute!