This is a preparatory meeting for the parade, the goal of the meeting is to select, the preliminary plan screened out about 14 candidate projects, one of which is the equipment that has been finalized but has not participated in the parade; The second category is likely to be finalized in recent years.

Therefore, even if it is still in the design, in principle, it can be taken out, but if it is only in the design, the danger is even greater, who knows if there are any design flaws, whether they can be completely solved in the next year or two?

So, at least we have to get to the testing stage.

The wheeled infantry fighting vehicles of the first machine factory are almost all tested, and the actual combat tests have been done, what else can be the problem?

So, what about the Iron Horse Factory?

The Iron Horse Factory must be lagging behind the First Machine Factory, after all, they copied the equipment of the First Machine Factory, and then made some self-righteous improvements, so as to be the fist product of their own factory.

I have to say that it can fool people.

After all, a larger hull means more space inside, more space in the body when it comes to transporting people, and more recoil when it comes to loading weapons.

However, this also means that the design of the car will be more complex and the more problems will be encountered.

It's not a simple matter of adding an axle, it's about providing power, not just power, but even steering.

The steering of the crawler chassis depends on the different speed of the two tracks, the steering of the wheeled vehicle, relying on the steering wheel of the wheeled vehicle, generally the front wheel, the front wheel is steering at the same time, the rear wheel is differential, and the car turns around.

For two-axle or three-axle vehicles, only one row of steering wheels is needed in front, while for four-axle vehicles, two rows of steering wheels are required.

In later generations, there are many double-row wheel steering trucks, the first four and eight common in the bicycle, the front two rows are steering wheels, to the complex ground, even the first row of steering wheels can be directly suspended, only use the second axle to steer on it, there are many such tractors in the trailer, which is about one ton lighter than the double-row driving wheel vehicle, which is widely popular.

However, at present, there is still no vehicle with double-row steering wheels, at least on the land of China.

Now, if you want to engage in a big eight-wheeler, the front two rows have to be steering wheels, which seems very simple, but in fact it is very difficult.

In the front two rows of steering wheels, it is necessary to increase the steering lever to drive the steering of the two groups of wheels, so it also puts forward higher requirements for the steering machine.

After all, the steering machine of heavy trucks is with hydraulic assistance, otherwise it will not be able to push the thick tire steering by relying on people's arms, and now, the parts of infantry fighting vehicles have evolved from heavy trucks, which also includes the steering machine, which is the steering machine of heavy trucks.

In the past, there was no problem to drive one row of wheels, but now when you drive two rows of wheels, the steering torque required will be much larger.

Since you've artificially added a row of wheels, let's talk about it here.

"We have analyzed, to increase a row of steering wheels, the required steering torque, at least 80 percent larger, and for military vehicles, to increase redundancy, it is best to be 120 percent larger, which means that the steering power system, to be more strengthened, at present in our parts market, it seems that none of them can meet this requirement." Qin Zhenhua asked solemnly: "Did your car have steering difficulties during the test drive?" ”

"Of course, of course not!" Hearing this, Liu Tiande only felt a chill in his back, they really ignored this problem, and only thought that it was enough to add two levers to go up, and now, when the other party said this, there would really be a problem inside.

But so what? If there is a problem, it will be solved, and at this time, it is absolutely impossible to admit defeat. If you admit that you didn't design this with this in mind, isn't it very immature?

The superiors will not ask for an immature plan, in case it is lying down during the military parade, then it will be worth it!

However, after all, the other party has given a wake-up call, and after going back, he will improve himself, isn't it?

"Oh, that's good." Qin Zhenhua nodded and said: "In our pre-research, we think that if we want to steer easily, we must not only work the steering wheel, but also have a certain degree of cooperation with the driving wheels behind." ”

"Drive wheels?"

"Yes, it is best for the drive wheels to actively differential, change the speed on both sides, and cooperate with the steering of the wheels in front, otherwise, both sides are wheels, and it is not so easy to turn."

Active differential? This means a different technical route! At this time, Liu Tiande was already confused, could this technical problem really be so serious?

Liu Tiande with doubts, finally ended their speech, the products of the Iron Horse Factory have been introduced, in this process, on the whole, it seems that the first machine factory suffers, after all, the first machine factory exhausted the wheeled infantry fighting vehicle project, now it seems that the iron horse factory is completely taken advantage of.

However, the last words seem to have the possibility of a reversal, but after all, these have to wait for future verification, as for now, let's continue the meeting!

Representatives of other factories began to make presentations, among which there was also some meaningful combat equipment.

In terms of tracked infantry fighting vehicles, a domestic unit already has a Type 86 infantry fighting vehicle, from the appearance, this infantry fighting vehicle is exactly the same as the Soviet BMP infantry fighting vehicle, in fact, it is its mapping imitation product, and even the weapons are exactly the same: a special 76 mm low-pressure smoothbore gun.

Although there are wheeled infantry fighting vehicles, but tracked infantry fighting vehicles are still meaningful, the country cannot rely on the old 63 armored vehicles to fight the world, and this updated infantry fighting vehicle will inevitably be needed in the future.

It's just that this kind of surveying and mapping imitation of Soviet products is not advanced enough!

At this time, Qin Zhenhua was also keenly capturing this information, considering the development direction of a machine factory, and now, there is a special tracked universal chassis, which has been selected by many weapon systems, but after all, that kind of chassis is heavy, and the engines used are all 59 tanks.

So, is it possible to develop a lightweight tracked universal chassis? After all, the best thing about a machine factory is still this.

Using the most trendy modular design concept, it can meet the needs of different equipment, and if such a chassis is made, it should be more marketable, right?

I can go back and do some research.