Chapter 343 Solving the Problem of Hitting Far
When the leaders of the Defense Work Committee received the report, they were a little amused and helpless.

What the Institute of Guidance and Research wanted was the thing that Gao Zhendong wanted to touch himself but had cut most of it off by himself, and then poked at the Changjian Factory with his finger. Unexpectedly, the thing that Gao Zhendong wanted to tinker with was also a popular item in other units.

This kid makes me feel uneasy.

The leader thought that he had gotten something for nothing and picked up the phone.

Whether it can be given or not, we should first listen to Comrade Gao Zhendong’s own opinion. Maybe there will be other gains.

When he makes a phone call, the line will naturally go smoothly and will not be disconnected.

Gao Zhendong picked up the phone and laughed when he heard his leader talk about this.

It's no wonder that the people at the Missile Research Institute are anxious. The range of our imitation Thunder-2 is much different from that of the original Sidewinder.

According to the unreliable information he knew in his previous life, the range of the Raiden-2 was only 7.6km. It was only several decades later that the range of the Type 2B reached 10km.

The Sidewinder (Type C), which is about the same size as it, has a maximum range of 17.7km, an effective head-on range of 12km, and an effective tail-chasing range of about 7km.

The difference between the two is not a world of difference, but at least there is a clear gap.

This is due to the sensors and the propellants.

Now with the help of Gao Zhendong, the sensor has been equipped with the second-generation cooled lead sulfide guidance head, and its performance has been greatly improved, but the propellant is still not very powerful.

So it is not surprising that when the people from the Missile Research Institute saw the X12, they were very excited and excited even though it was not very suitable due to the different type of missile.

Gao Zhendong said to his leader: "Leader, there is no problem in giving it to them. This thing was originally developed for people to use, and it has no impact on my project."

Really?

The leader of the Defense Work Committee heard the hidden meaning in Gao Zhendong's words: "From what you said, do you have any other ideas?"

Gao Zhendong admitted it immediately: "Yes, this is not particularly suitable for them. You remember that I applied for a lot of materials, but you cut it down to only this one, right?"

After all, although the parameters can be adjusted, the adjustment range is limited, otherwise different bullets would not have propellants with different formulas.

When the leader heard this, he said, "Good boy, you're waiting for me here. I shouldn't have canceled your application in Yin and Yang, right?"

"If you have something to say, say it quickly, and if you have a fart, say it quickly."

Gao Zhendong smiled and said, "Among the formulas I was thinking of at the time, there should be one that is more suitable for them. Leader, please ask them to come to me and I will talk to them. Anyway, the Institute of Research and I are old acquaintances, and I am also their technical consultant."

"Okay, then I'll ask them to come find you. By the way, come over in a few days and give the people here a lesson on the first two chapters of your equipment acceleration test."

While the leader finalized the equipment acceleration test class, he secretly thought that this guy really has some good stuff. After getting Gao Zhendong's reply, he approved the application of the Research Institute.

Mr. Song from the Institute of Guidance and Research received the approval letter, looking stunned. Was it him? It was returned to him.

As the person in charge of solid rocket engines, when he was solving the throat liner problem, he already knew Gao Zhendong and his abilities from Lin Lianwei. He is a top expert in materials with fruitful results, and he solved his own solid rocket problem with just a few words.

But I never expected that this "material" even included propellant?
Well, that seems to be okay.

Go away, there's nothing wrong with it. If graphite materials and metal materials are still somewhat related, propellants and these things are completely different things.

But that's the fact. The propellant was made by someone else. Coincidentally, he is a consultant in the institute, so there is nothing wrong with asking him for help.

He took the approval from the Fire Prevention Committee, called Lin Lianwei and went to the Third Rolling Mill.

Su Weihua: Lao Lin, are you here as a guest too?

The Institute of Research and Development acted very quickly. The call was made in the morning and the person arrived in the afternoon.

When Lin Lianwei saw Gao Zhendong’s doorplate, he saw “Chief Engineer of the Third Branch”. Wow, Gao got promoted again?
As soon as he entered the door, he said cheerfully: "Lao Gao, we are here to trouble you again."

After that, he introduced Mr. Song and Gao Zhendong. Although Mr. Song had heard of Gao Zhendong, this was the first time he met him.

"Hello, Chief Engineer Gao."

While greeting, Mr. Song was secretly amazed at Gao Zhendong's position. This is a large factory directly under the ministry, and the position of its branch factory is not low.

"Hello, Mr. Song. This time you are here for the solid rocket propellant matter, right?"

"Yes, I saw your results in the scientific and technological intelligence bulletin, which are very useful to us, so I took the liberty to find you through the National Defense Committee." Gao Zhendong smiled and said, "No problem, that propellant is originally used for hair growth, but for you, isn't that propellant a little inappropriate?"

Mr. Song nodded: "It is a little inappropriate, but we want to adjust it by adding components and changing the shape, it should be possible."

Gao Zhendong shook his head: "The range of adjustment is limited. How about this? I'll give you another formula to try? It should be more suitable than the current one. If it doesn't work, consider the current one."

What he wanted to give them was the STD propellant used in the early models of the Citigroup Sidewinder. No matter what the X12 could be adjusted to, STD was definitely suitable, and Citigroup had helped to try it.

In this regard, Citibank is trustworthy.

Moreover, it will take a long time to adjust the X12. Those who work in the technical field know that sometimes adjusting a finished product is more troublesome than making a new one, because many conditions are already fixed.

Mr. Song was very happy about Gao Zhendong's words. He didn't suspect that Gao Zhendong was making excuses. He said, "I'll get you a new one first. If that doesn't work, we can change the old one."

Lin Lianwei looked at Gao Zhendong's head with curiosity, as if he wanted to open it and see what was inside. He even sold propellant wholesale.

In fact, Gao Zhendong doesn’t know much about this aspect, but most of it is already very advanced for the current domestic technological environment.

Gao Zhendong wrote down the formula of STD on paper, but he did not write the content of each ingredient very accurately. He only gave a range for the amount of nitrocellulose, nitroglycerin, and DNT (dinitrotoluene) and let Mr. Song and his team try it themselves.

Otherwise, if you get the STD formula through other channels in the future, it will seem very strange to see that the content percentages of the two are exactly the same to two decimal places.

Compared with the same proportions, using the same materials is not a big problem. It can be said that great minds think alike.

As for whether Mr. Song and his team's test results are completely consistent with STD, and whether it will cause performance degradation, there is no need to worry. The range given by Gao Zhendong is quite clever, and basically falls within the optimal ratio range.

Mr. Song and his colleagues are not fools. Just like "life will find a way", so will technology.

Mr. Song was eager to learn: "Mr. Gao, what is the role of this carbon black here?"

Gao Zhendong was not one to keep his knowledge to himself. He copied it anyway, so it would be better if he could teach more people: "Combustion rate catalyst, used to adjust the combustion rate."

"Which one should I choose for the medium dose?"

"Dimethyl diphenyl urea, diethyl diphenyl urea, methyl ethyl diphenyl urea will all work. Use whatever you have."

"Mr. Gao, I see that the ratio of co-solvent in your formula is very high. Generally, the ratio of co-solvent is about 3%, but yours has reached 10%. Will it affect the energy of the propellant?"

Solvents are used to increase or improve the solubility of nitrocellulose. The solvent content of non-energetic materials generally does not exceed 3%, but the one selected by Gao Zhendong is an exception.

"Mr. Song, dinitrotoluene is also an energetic material, so a higher concentration won't have much impact."

Mr. Song patted his head and laughed at himself for forgetting even this and only seeing the words "cosolvent".

Using energetic materials as solvents can minimize the impact of the solvents on energy. In fact, this is done in many propellants. The energetic materials used are varied. For example, the famous TNT, RDX, and HMX can all be used as solvents in double-base propellants.

Because the main components of double-base propellants are nitrocellulose and nitroglycerin, these co-solvents are not the main energy providers, but rather play a more process or auxiliary role.

However, in NEPE and GAP propellants, these things are not co-solvents, but the main energy components, even including CL-20, which has a more explosive ratio.

Just like with the Changjian Factory, Gao Zhendong also explained the production process to President Song. These processes were also what they had not considered thoroughly. In fact, for him, the value of the process was no less than the formula itself.

After all, the formula is unique, but the process can be promoted and reused.

After communicating for a long time, Mr. Song closed the notebook with satisfaction. Although the result of today's trip is still unknown, judging from the confidence of Consultant Gao, it should be very good.

After all, the formula he brought out looked exactly like the finished product, and coupled with the detailed craftsmanship, Mr. Song even suspected that this thing had been produced somewhere else.

He also joked: "Advisor Gao, from the seeker to the warhead, and then to the engine and propellant, you almost finished all our work."

Although it is a bit exaggerated, it is not without reason. The cooled lead sulfide seeker, continuous rod warhead, engine casing, throat lining, and propellant are all related to Gao Zhendong.

Gao Zhendong smiled and shook his head: "I just came up with some ideas for these things, there's no point in exaggerating, haha."

"There's no need to be modest, Mr. Gao. Your idea is so important. It solves the two major problems of hitting the target accurately and flying far."

These problems were basically solved on the previous Raiden-2 model decades later, on the 2B model. However, by that time, the solutions were already outdated.

Mr. Song, who had gained a lot, rushed to the Research Institute with Lin Lianwei. He wanted to go back and quickly make what he got today, otherwise he would feel uncomfortable.

(End of this chapter)