These things should have been worried about by Zhu Lao, but the sense of responsibility in Qin Zhenhua's heart and the sense of honor of the First Machine Factory made him also think about these.

Only the engine, no qualified transmission system, or not, even in many cases, the transmission system is more important than the engine, and the country for many years, has been only engaged in fixed shaft gearbox, this is the lowest level of technology, the most mature, the most durable, but also the most backward.

For tanks, mechanical operation is outdated, and German tanks during World War II have already applied hydraulic transmission and used gearboxes, but what about themselves? It was only on the 122 tank prototype that he tried the three-liquid system for the first time, but the result was immature, and oil leaked everywhere, and finally ended up without a problem.

The troops are also well aware of this; for the troops, the advanced is of course important, but the more important one than the advanced is mature, and the troops can use products that are not the most advanced, but they must be the most mature, and if they are immature, they will be repaired twice in three days on the battlefield, and this is a crime.

Therefore, the troops are again the most conservative.

Pay attention to the fact that people must adapt to the machine, and strict training to improve the technical level, the troops do not care whether it is a hydraulic transmission system or not, and there will even be some resistance.

After all, the hydraulic system, when entering the army, it is necessary to retrain the maintenance personnel of the army, and the operation methods are also different, which will give people a sense of strangeness.

The troops are the most xenophobic.

Qin Zhenhua had such a preparation: even if he had already built a qualified hydraulic transmission system, when he arrived at the troops, he gave up and used an ordinary mechanical gearbox because he was afraid of possible failures.

Now, there are various factors that are making Qin Zhenhua think more and be more perfect.

Not only must there be an imported program, but also have its own mechanical transmission program.

Hearing Qin Zhenhua's words, Liu Shibao, the director of the gearbox branch, immediately patted his chest: "This is simple, let's just enlarge the existing 80 tank gearbox to ensure that it is proper!" ”

However, Qin Zhenhua shook his head: "No, you can't use the existing plan." ”

"Why?"

"Because it's too long, there is no future in doing this, and Zhu Lao will also deny it."

Too long?

According to the plan, the third generation of tanks is longitudinal engine, the original version of the longitudinal engine will be long, according to the current plan, it will grow by about a meter, which will bring an increase in weight, and now, not only the engine, but also the gearbox?

If it is a longitudinal gearbox, it will probably be half a meter longer, and the overall design will be overturned, and Zhu Lao will definitely scold his mother.

Of course, now Zhu Lao has been planning according to the hydraulic gearbox, and he hasn't thought about the mechanical gearbox at all, and Qin Zhenhua is just taking precautions.

"If you don't use our fixed-shaft gearbox, what's that for?" Liu Shibao asked.

Hydraulic gearbox, we are already working on it, mechanical gearbox, we are familiar with this kind of ah.

"I think the T-72 has a good plan." Qin Zhenhua said: "We have completely mapped and copied the T-72, from Zhu Lao's side, the information of the T-72 will be asked over, and we will make a plan for a two-sided planetary gearbox." ”

Fixed shaft gearbox, mainly two shafts, one to the engine, the other output power, these two shafts, with different large and small gears, through the combination of different gears to get different speed ratios, so, the more gears, the longer this thing, the gears are arranged along the shaft.

The planetary gearbox is different, using planetary gears, which belong to a structure of lateral development, and have great advantages in terms of the need to reduce volume.

T-72 uses this scheme, on both sides of the body has a 3 degrees of freedom planetary mechanical gearbox with the same structure, with manual hydraulic control, through 4 planetary rows and 6 control parts, it realizes 7 forward gears and 1 reverse gear bull, in addition to the role of shifting, it also has the functions of steering, braking and cutting off power.

Compared with the previous fixed-shaft gearbox, it can not only adapt to the use of half more power, but also greatly improve the transmission performance, and reduce the weight of the transmission device.

After all, the Soviets are also progressing, and for their own side, if there is a problem with the hydraulic operating system, it is also a very good solution to change the equipment.

"However, the T-72 is a transverse engine, and ours is a longitudinal engine." Urihua asked, he knew the benefits of this side gearbox, but how could it be used because the two engines were arranged differently?

"So we need an extra propeller shaft." Qin Zhenhua said with a smile: "Fart and take off your pants, but there is no way, this project, let's do the theory first." ”

There are a lot of things to arrange, in addition to the third-generation tank, there are also Type 85 foreign trade tanks, 88 parade tanks, as well as self-propelled artillery and ammunition supply vehicles at the Second Machine Factory, and so on.

Qin Zhenhua doesn't like to hold meetings at night, after all, everyone has been busy all day, but after coming back, all work must be arranged, and it can't be delayed any longer, so just like that, he fought for another night.

Still young, lying on the table, after sleeping for a while, he felt energetic again, and after breakfast, Qin Zhenhua stomped and walked out of the conference room.

For the development of this department, he also specially purchased a batch of Apple's Macintosh computers, which are multimedia computers, and the focus is on graphics processing capabilities.

Now, when he walked to the door, he deliberately put special shoe covers on his feet, and then walked in.

There was a crackling sound inside, this voice was very familiar, very pleasant, this was the sound of fingers tapping quickly on the keyboard, at this time, those people were working attentively, this scene made Qin Zhenhua feel very satisfied.

Could it be that I underestimated the difficulty of building a factory-specific database system? As long as they work hard, they can understand themselves.

With such thoughts, Qin Zhenhua walked in slowly, maybe because the people here were working seriously and were so focused that they didn't pay attention to the surrounding situation at all, or maybe it was also because Qin Zhenhua was wearing shoe covers, so the sound of walking was very soft, in short, without anyone paying attention, he walked to the front, and when he saw the computer screen, his face suddenly became gloomy.