Chapter 74: Was he also responsible for 3Z-591?
While drawing, Gao Zhendong explained to Lin Lianwei: "You should remember the thermodynamic cycle of gases, right?"

Lin Lianwei nodded: "Ah, I remember, I remember."

Gao Zhendong pointed to the picture he had drawn and said, "When compressed gas expands, it absorbs a lot of heat. You should remember that?"

Lin Lianwei thought about it carefully and said, "Ah, yes, yes, yes, what's wrong with your head? Haha."

Gao Zhendong continued to draw another picture, saying as he drew: "This kind of heat absorption, combined with a suitable heat exchange device, can even quickly reduce the temperature of the cooling object to dozens of degrees below zero. If you choose a suitable expansion speed and a reasonable expansion chamber, it should be able to meet your requirements."

Lin Lianwei grabbed Gao Zhendong's shoulders and shook them vigorously: "Lao Gao, this is great, great, you see the direction, you are really a genius."

I am not a genius, Gao Zhendong thought to himself.

This technology is actually the technology used on the Thunder 2B infrared air-to-air combat missile later. It effectively improves the detection sensitivity of the infrared seeker. The second-generation infrared seekers, including the United States AIM-9D, all follow this approach.

In fact, Gao Zhendong knew what the third-generation infrared seeker used, but in the current situation, he couldn't directly say, Lianwei, you use indium antimonide, that would be a lot of fun for him. But since he knew that Lin Lianwei was doing this, he would see if he could find a chance to guide him in the future.

At this time, Gao Zhendong had also finished drawing the second picture. Although he didn't know the structure of the compressed gas refrigeration device of Thunder 2B, as a military fan who liked to get to the bottom of things in his previous life, he knew the structure of the vortex tube cooler based on the same principle. He simply drew it out to see if Lin Lianwei and the others could use it.

He pointed to the second picture and said, "Come and take a look. This is my idea. See if it is useful to you."

Lin Lianwei felt as if he had found a treasure. He looked at the simple structural diagram with shining eyes and exclaimed in admiration.

Gao Zhendong explained while pointing at the structure on the diagram. Lin Lianwei immediately pulled his hand away: "Where are you rubbing your hand? Don't mess up my diagram."

Gao Zhendong burst out laughing. Lin Lianwei's behavior reminded him of the joke about a wealthy man buying a warship that was circulated on the Internet in his previous life.

——"Young man, this is your money, please get off my boat now."

Lin Lianwei thought it was funny himself, and they both burst into laughter.

After a while, Lin Lianwei solemnly shook Gao Zhendong's hand and said, "Comrade Zhendong, thank you very much. Your idea really helped us a lot."

Originally, he didn't hold much hope when he came to see Gao Zhendong today. He just wanted to give it a try and see if it could broaden his thinking. However, he didn't expect to get such a big surprise.

Gao Zhendong also responded seriously: "Comrade Lian Wei, you are too kind. This is what I should do. I will do my best as long as I can."

Lin Lianwei carefully picked up the two thin pieces of paper, blew them dry, and carefully put them in his pocket: "Zhendong, I won't say much else. Hehe, if there are any results, your name will definitely be on the list. Your technical route is too critical. I'm going back now. With your thing, I always feel uncomfortable if I don't go back and get it out with my colleagues at the unit."

Gao Zhendong understood his feelings, which was a creative desire that belonged to scientific researchers.

But seeing how important this thing was to him, and thinking about his work unit, Gao Zhendong thought for a moment and asked, "Lian Wei, do you need me to send a few militia comrades to take you back to the unit?"

Lin Lianwei was quite curious: "Comrade militia? You can mobilize the militia?" Gao Zhendong laughed and patted his chest: "Deputy Chief of the Training Section of the Security Department, Deputy Captain of the Militia Team, hahahaha."

In front of his old classmates, he would be more casual, as there was nothing wrong with talking about such things.

Lin Lianwei didn't know what to say for a moment: "Ah, this, this. If I had known you were from the battlefield, I would have never thought that you would not give up your skills after returning."

Giving Gao Zhendong a thumbs up, Lin Lianwei thought for a moment and said, "Then please ask the two militia comrades to take me there. I really..."

Gao Zhendong understood his feelings, patted him on the shoulder, and took him to the militia on duty.

He briefly explained the situation to Section Chief Li, then selected two reliable militiamen to send Lin Lianwei back to his unit.

When Lin Lianwei returned to the unit, he immediately rushed to the person in charge of the guidance subsystem and said, "Engineer Lu, I brought back something good."

Engineer Lu, the person in charge of the guidance subsystem, was discussing issues with the chief designer of the missile imitation model. When they saw Lin Lianwei coming, they temporarily stopped the topic. The thing that could make Lin Lianwei so happy was definitely not something like bringing two bags of rice.

"Oh? What good stuff does your classmate have?" Engineer Lu knew where Lin Lianwei had gone, otherwise, Lin Lianwei would not have had time to go to the third rolling mill during working hours.

"Look!" Lin Lianwei took out two pieces of paper from Gao Zhendong and talked to the two bosses about Gao Zhendong's ideas and plans.

As Lin Lianwei explained, the two bosses' eyes lit up and they kept praising him.

After he finished explaining, before Engineer Lu could say anything, the chief model designer slammed the table and said, "Great! Let's do it! Where did you go? Come back with these two treasures."

Engineer Lu took over the conversation and said, "This method is indeed ingenious. It perfectly meets all our requirements and is low-cost. He went to the Third Steel Rolling Mill today. He has a classmate there. He thought that the steel rolling mill is a high-temperature environment and he should have some ideas about cooling and refrigeration. I didn't expect that it was not just a simple idea."

Lin Lianwei added: "Zhendong said that our requirements were completely different from those of his factory. This was another solution he came up with for me. From the time I finished speaking about my requirements to the time he proposed this technical route, the pause was no more than 5 seconds. It was amazing."

This "Zhendong" caught the attention of Engineer Lu and the chief engineer. "Third Rolling Mill", "Zhendong", the two looked at each other but didn't say anything for the time being.

The chief model designer set the tone: "Lao Lu, Xiao Lin, I think this comrade's idea is very good, you should just follow his idea."

Engineer Lu also nodded in agreement and arranged for Lin Lianwei to immediately organize personnel to carry out experiments according to Gao Zhendong's idea.

After Lin Lianwei received the order and left, the chief engineer and Engineer Lu looked at each other again. The chief engineer knocked on the table and said, "Gao Zhendong? Do you remember the internal notice we just received from the 17th Ministry of Machinery, about the new high-temperature alloy material?"

Engineer Lu nodded. "I just remembered it. 3Z-591 is what we are going to use to make missile solid fuel engine casings. I remember the report said the person who made this material is called Gao Zhendong."

(End of this chapter)