Chapter 304: One is not enough, use two

Gao Zhendong smiled and said, "Then you can raise this issue after you have studied it."

Gao Zhendong understands everything from the principles to the design of the laser rangefinder, thanks to his own unremitting efforts.

This effort had little to do with learning, but rather, after he worked hard to develop the laser, he met the required prerequisite technical conditions.

He was able to extract a telescope from the system that was previously impossible to extract - a telescope with a laser rangefinder function, sourced from the toy section.

Since it's a toy, we won't use overly complicated means. We'll use the simplest, but relatively inaccurate pulse ranging method.

Coincidentally, this method is just right for tank ranging. After all, an accuracy of one meter is completely sufficient for tank fire control. The advantage of this method is that it is suitable for long-distance measurement. At the same time, the technology is relatively simple and easy to implement.

There is no outdated technology, only inappropriate technology.

However, Gao Zhendong does not plan to present the results directly, but to guide Mr. He and others to go through the entire process. No matter how hard Gao Zhendong works, his impact will be limited.

Only a group of small-sized Gao Zhendongs can change the overall situation to some extent.

Anyway, there is still enough time now, so it doesn't matter if it's a little slow. Don't underestimate 5DL. Although this guy was ridiculed a lot in Gao Zhendong's previous life, that was because he had served for too long.

But at this time in 1960, although we could not say that we were absolutely ahead, we did have a certain degree of suppression against the disabled tanks of the Oceanic Pact countries.

Although the results were not going to be given directly, he still had to do the preparatory work for the people at the Grassland Tractor Factory, such as learning the principles of lasers and finding a suitable laser. The current laser did not quite meet the requirements.

The matter of laser ranging has come to an end, and Gao Zhendong continues to talk to Mr. He and others about fire control.

"Besides the distance, what else is there to deal with? Think about it."

Lao He said without hesitation: "Night vision. Although we have infrared headlights now, I always feel that using this thing is like lighting a lantern in the toilet - it's courting death, it's too conspicuous."

It turned out to be this, but Gao Zhendong is not ready to solve it yet, it will take some time.

Gao Zhendong nodded: "Well, let's put this question aside for now."

What does Vice President Gao mean by this? Mr. He was a little dumbfounded, but he knew very well that Gao Zhendong did not mean to ignore this matter, but to "put it aside", which meant that Vice President Gao had a plan in mind, but it was not a priority option.

Well, it seems that I should come to visit Vice President Gao whenever I have nothing to do, or at least call him more often to say hello. He must have some good stuff hidden there!
"If we put this aside, there won't be any specific problems for the time being. What remains are things like system functions and performance, which need to be demonstrated and discussed. We haven't reached that stage yet." He couldn't think of any other problems for the time being.

Gao Zhendong smiled and said, "Gone? What about the wind?"

"Wind?" Mr. He was stunned and fell into a brief thought.

Soon, he slapped his thigh and said, "Haha, Vice President Gao, Gao! Hengfeng! Why didn't I think of that!"

The impact of wind on projectiles is very obvious, especially at distances of more than a thousand meters. Not to mention something as big as an artillery shell, even something as small as a sniper rifle bullet will be affected.

The reason why the sniper team in the future consists of two people is that in addition to the main sniper, the other observer is responsible for target observation, temperature, wind speed and direction, etc.

As for the influence of wind on tank shells, the weight in the front and rear directions is not too great. After all, tank guns are typical of miracles achieved with great force, especially the fin-stabilized discarding sabot armor-piercing projectile. The reason why its effective range is only a few thousand meters is not because this thing can only shoot at a few thousand meters.

In fact, within this range, the impact of wind energy in the front and rear directions is very small compared to the energy of the shell itself, especially under the premise that the frontal area of ​​the fin-stabilized armor-piercing discarding sabot projectile is very small.

The biggest influence is the wind from the side of the shell, so crosswind sensors are basically standard equipment for third-generation tanks.

Gao Zhendong said: "The monitoring of this thing is quite simple. I'll just mention it and you can solve it yourself."

Lao He is no weakling. He has thought it through in a short while: "You don't have to do anything about this. Just bring it up to me. I just thought about it. Turbine will do. If I can't handle this, I'd better get out of here."

Turbine sounds very professional, but it would be unsophisticated to call it another way: windmill!

Gao Zhendong smiled. His words were rough but the logic was sound.

"Well, I won't say much about this. What else is there? Think about it again?"

Lao He thought carefully for a while: "Temperature? Air pressure?"

So Lao He is really a great guy, he said it all. Temperature will affect a series of conditions of the entire tank and even the environmental conditions, and the temperature can be monitored at more than one location.

Air pressure can deduce related parameters such as air density and oxygen content, which can affect the trajectory of artillery shells, and is also one of the important auxiliary parameters.

Even these are not just needed for fire control, but for the operation of the entire tank.

The reason why Mr. He didn't think about these things at the beginning was mainly because he had never fought such a rich war. Before the fire control computer, it was useless to collect these things. If the gunner couldn't calculate it, it would be better not to calculate it, otherwise the firing rate would be extremely ugly.

Now that computers can automatically calculate sensor data, there are more things that can be done, and slowly he began to think about the things that he once hoped for but could not get.

Mr. He got the idea, so he didn't even need Gao Zhendong to tell him. He said, "For temperature, you can use the K-type thermocouple you made. For air pressure, a diaphragm barometer will do."

It is really appropriate to put the diaphragm barometer here, because the tank's sensitivity to air pressure, or altitude, is far lower than that of anti-ship missiles flying at low altitude. For the tank system, an altitude difference of a hundred or two hundred meters does not matter, but an anti-ship missile may rush into the sea.

At this point, he felt a sour taste in his mouth: "Hiss~~~~~ So many parameters, how can I calculate them when aiming."

Gao Zhendong nodded: "This is why I want to leave you two DJS-60Ds, one for you to use for the weapon digital stabilization system, and one for you to use for the fire control system. If the two sets can be combined in the end, of course it will be great, but if the computing power is not enough, then use two!"

All parameters necessary for weapon stability must be collected at any time, change at any time, be calculated at any time, and be output at any time, including the vertical, horizontal, motor, seat ring, and screw parameters.

With each additional parameter, the complexity is more than just doubling the amount of calculation.

And this process cannot be stopped, the control algorithm is always running.

Therefore, when the fire control system is added, the computing power of DJS-60D may not be enough here.

The fire control system is not easy either, as it takes into account its own speed, direction, gun pointing, target distance, target motion status, crosswind, temperature, and air pressure. You can't just turn on the dual stabilizer while performing fire control, that would be a joke.

Even if we don't achieve move-to-move, it won't be much easier.

After hearing what Gao Zhendong said, Lao He was happy: "You are really thoughtful. I never thought that we would never fight such a rich war. Vice President Gao, if the second-generation tank is really made according to what you said, I dare not say anything else, but I can guarantee its firepower."

Gao Zhendong thought to himself, not to mention you dare to take pictures, I dare to do it too.

With this firepower, fire control, and defense, plus the thermal imager that I'm still tinkering with, we'll be able to fight against any new tanks we encounter in twenty years, let alone ten years. As for current tanks, there's no need to even mention them.

These are all sub-items. As for the structure of the fire control system, whether it is to use light spot injection, upward anti-image stabilization or downward anti-image stabilization, Gao Zhendong has not yet figured it out. This will have to wait until the second-generation tank is officially launched, and it will be determined in combination with the situation of other disciplines, such as optics.

Even the injection of light spots here is a leap forward compared to the existing fire control system. There is no such thing as fire control now, so it is a relatively fair evaluation to call it a sight.

Thinking of this, Gao Zhendong said: "As you said, our hard indicators are fine, but I hope that at least at this stage, we can solve the problem of the fire control system's 'dynamic against static' from the system level, rather than relying on the crew's skills to achieve the 'dynamic against static' capability."

The word "towards" refers to the movement status of one's own tank, and after it, it refers to the target to be hit.

With Gao Zhendong's current resources, achieving "movement" is more difficult than "stillness".

Whether it is moving against static or static against static, the target is motionless, which allows the fire control system to skip target identification and locking, and instead calculate the spatial relationship with the target through its own motion state, thereby skipping target identification and directly locking the target.

Whenever there is a need to detect movement, it involves the problem of target recognition and automatic tracking. The technology Gao Zhendong currently has can only lock onto the moving target by inputting or obtaining the target speed and performing calculations.

This is not actually an automatic lock on the target entity, but rather a calculation of where the target might appear and direct aiming at the target's possible movement trajectory.

If the target's speed changes significantly, it is unlocked. In other words, if it has never been locked, it is not unlocked, but just a prediction failure.

Lao He thought for a while and said, "I think it's possible. With the input of these parameters, combined with the input of the tank control system and the weapon stabilization system, I am still confident in the hit rate of attacking static enemies."

The discussion continued with Lao He and the others until the end of get off work, and Gao Zhendong arranged for them to have a meal in the small cafeteria as a welcome meal.

They first stayed in the guesthouse of the Third Steel Rolling Mill, looking like they would not give up until the end.

Gao Zhendong gave them two things, one was the material of DJS-60D, and the other was the learning material of laser principles and characteristics. He asked them to take a look at it first and ask him if they had any questions. Especially the content related to laser was completely new to them.

(End of this chapter)