Chapter 316 Then Increase the Charge
Although there was no practice, the two were still very familiar with the theoretical knowledge. And it can be said that in this regard, in addition to Gao Zhendong's advantages of foresight and extensive knowledge, he was still a student in front of these two people.

After listening to Gao Zhendong's analysis of the principle, the two had already analyzed the feasibility of this technical route in their minds, and they even thought of more.

For the time being, Engineer Qi only needs to focus on the anti-ship missiles, but Mr. Qiu, who is in charge of and participates in many tasks in the unit, has a lot more to consider.

He was very keenly aware that this technology, regardless of whether it could be successfully developed for the time being, was an important direction for missile guidance technology in the future, and its application prospects were far more than just anti-ship missiles.

Gao Zhendong didn't need to say anything else, let alone whether he could get the DJS-60D. Just based on Gao Zhendong's words, this trip was absolutely worth it.

He even put aside other things and started discussing the pros and cons of this technology.

"In this method, the gyroscope is directly mounted on the missile structure and moves with the missile body. The dynamic range required for the gyroscope is much larger than that used on the platform."

Gao Zhendong nodded: "Yes, but this is not a big disadvantage, especially compared to the benefits it brings, and the trajectory of the anti-ship missile is not drastic. It can be solved by properly improving the gyroscope and optimizing the ballistic profile even under current technical conditions."

In fact, the more violent the motion trajectory, the more suitable it is for strapdown inertial navigation, because there is no platform system and there is no need to consider the problem of frame locking. Therefore, compared with the inertial platform system, the strapdown inertial navigation can work in all directions.

Gao Zhendong said this earlier mainly to solve the problem that in the short term, we still don’t know how large the dynamic range of the gyroscope can be.

"Well, that makes sense, but this method requires an extremely large amount of calculations."

Unlike the inertial platform whose output signals can be used for guidance directly or through simple conversion, the strapdown inertial navigation system needs to go through a lot of calculations before it can output control signals, which in principle involves the calculation of a large number of differential equations.

This is also the reason why various tactical missiles generally used platform inertial navigation before miniaturized and microcomputers were available. You don’t have that ability to know. Not to mention the distant ones, there is a small inertial platform on the Chijian-73.

This is a typical example of exchanging technological advantages for performance characteristics. Advanced computers are required to use this technology to reduce system complexity, cost, maintenance, improve working conditions, and optimize a series of characteristics.

But when it comes to this, Mr. Qiu himself laughed. Isn't this the strength of DJS-60D? The reason we talk about this is because we have its computing power but don't know how to use it. Let's skip this issue.

"Under the current conditions, this technology has many sources of cumulative errors and a large amount of accumulated error. It still needs a good gyroscope to be perfect." After writing and drawing on his notebook for a while, Mr. Qiu stated his ideal goal.

However, Qi Gong did not care about this problem: "Mr. Qiu, you are dealing with many types of models, so you need to consider them carefully. But for me, I only have an anti-ship missile, which is not that complicated. I also have radar terminal guidance, and inertial guidance will be fine."

If other missiles still need to make considerable efforts and improvements on the gyroscope to solve error problems, then for him, this technology is really the most suitable one under the existing technical conditions.

This is because a considerable portion of the error can be compensated in the computer's calculation process after the gyroscope has been rigorously tested and calibrated, without the need for major surgery on the gyroscope itself.

Basically, I know the error of this thing itself, and I also know the error caused by the movement. So, I calculate these errors during the calculation process.

This technical approach is extremely difficult without a real onboard computer, to the point of being almost worthless.

Mr. Qiu laughed and joked: "Old Qi, your idea of ​​everyone minding their own business and not worrying about other people's troubles is not a good idea, haha."

You can see that he is in a very good mood.

Isn't this nonsense? In this situation, no one would be in a bad mood.

Su Weihua had no say in this discussion. As a newcomer who had been assigned to the unit for less than a year and was not involved in the inertial navigation, he had not even figured out the platform inertial navigation yet. The entire altimeter was enough to keep him busy.

He just looked at Gao Zhendong with full admiration as his casual remarks made his chief model designer and subsystem chief engineer fall into ecstasy and hold a technical seminar on the spot.

There is no comparison, really no comparison.

This old classmate has no creative bottleneck at all.

The few people discussed this for a while before Qiu and Qi put down their pens with satisfied looks on their faces.

"Advisor Gao, Lao Qi, this is a good idea. Let's do it according to this idea. If nothing else, I estimate that the degree of weight loss should be calculated at the level of 100 kilograms."

"Mr. Qiu, not only that, just based on this, the missile's reaction speed has been improved by more than one level, and the preparation time of the inertial platform has been greatly reduced. There are many other benefits in manufacturing and maintenance."

To sum up: this technology is new and good! Mr. Qiu said happily: "Oh, I have lost so much weight. I have to think about how to use it. It's really troublesome, hahaha."

This is not entirely a joke. Reducing the weight means that compared with the imitation object, the weight has changed, the center of gravity has changed, the center of mass has changed, the structure has changed, the load-bearing parts are different, and the size may also have changed.
These will affect the overall design of the entire missile.

It's not like you can just keep the original shape and dig out a piece from the inside and throw it away.

There was once equipment that lost hundreds of kilograms through advances in electronic equipment, but because the cost of re-processing was too high, it was not worth it, so they simply used counterweights to put the weight back on.

This approach is not entirely lazy. At least it has improved the sophistication of electronic equipment, reduced the complexity of the system, and improved performance in some other aspects. It has only given up the benefit of weight reduction, but the benefits are already considerable.

Conducting practical engineering application research is inherently a process of trade-offs, and knowing how to give up appropriately is not always a bad thing.

Having said that, Mr. Qiu's words still had the serious suspicion of being ungrateful, which made Qi Gong look at Gao Zhendong embarrassedly, and the general meaning should be "Our boss is like this, he likes to joke, please forgive me."

Gao Zhendong said casually: "Well, this is indeed a problem of neither big nor small. My personal suggestion is to increase the charge!"

The original warhead of "Zhengxian No. 500" was a kg shaped-charge blasting warhead, which was similar to the principle of shaped-charge armor-piercing, but it did not rely on metal jets, but instead relied on the gathering of blasting energy.

So the two are very different in appearance. The shaped charge liner is like a deep funnel, while the shaped charge liner is much shallower. Gao Zhendong has never seen the warhead of the "Zhengxian No. 2", but he has seen the "Flying Eagle-", which is round and cute.

Mr. Qiu asked with great interest: "Advisor Gao, why not increase the range?"

Gao Zhendong laughed and said, "We lack relay means for the time being. We can shoot that far, but we can't see that far."

Mr. Qiu laughed out loud: "That makes sense, that makes sense, I'll think about it later."

Having said that, Gao Zhendong turned to talk about another application: "With computers, routine missile maintenance and testing, pre-launch preparation testing and other links can be more automated. The onboard computer can directly control the relevant systems, conduct self-tests and transmit the results to the command system through the data interface, which reduces the workload of personnel."

In fact, everyone is using this technology, but they may not realize it. The most typical example is the on-board computer of our car. The series of self-tests at startup and the reading of fault codes during repairs in the auto repair shop all rely on this system.

It’s not impossible to do it without a computer, but it will cost more.

This is a good thing about raking straw to kill rabbits. Anyway, it's already on the computer, so it might as well do it by the way.

Engineer Qi did not feel much about it, as he thought it was not his place to meddle in other people's business. However, Chief Qiu thought it was a good idea. As the chief model designer, maintainability was also a major aspect he had to consider.

Paper combat effectiveness and actual combat effectiveness are two completely different things. Actual combat effectiveness is inseparable from training and maintenance.

For example, a certain Wuchang had 6 air defense destroyers on paper, but in reality, when they were pulled out, they couldn't even cross the bathtub in the Mediterranean Sea and had to return all of them. It was a real disgrace.

After discussing these directions for a while, Gao Zhendong also brought out functions such as integrated control and ground equipment coordination. In the end, he returned to the guidance path: "In fact, I think it is not impossible to use guidance on missiles."

What is the biggest flaw of the 544, which is the object of imitation? It is not the miniaturization, range, or hit rate, but the anti-interference ability.

Basically, as one of the earliest anti-ship missiles, its anti-interference capability is so poor that it will go blind if it is shaken.

This is related to the fact that it uses early radar technology and the radar hardware foundation is poor.

This is also one of the reasons why Gao Zhendong did not connect this thing to radar signal processing and other directions at the beginning. The existing ones are enough, and adding this thing will not necessarily bring much improvement.

In fact, even decades later, if infrared terminal guidance and other terminal guidance technologies are not added, the electronic confrontation between missiles and warships will always be dominated by warships, and missiles will never be able to win in electronic confrontation.

The reason is not difficult to explain: power.

In the words of the photography industry, this is called "a larger base is a killer."

(End of this chapter)