A professor's rebirth: I entered Tsinghua University in 1977.

After the meeting, work started immediately.

Song Anhua knew Tan Dexi's temper and didn't even mention eating first.

Anyway, it’s time for dinner, so just take him over.

As the actual "designer" of this weapon, Liu Hongyi naturally had to follow the entire process. This also gave him a comprehensive understanding of the production process of military enterprises.

To be honest, in this era, the equipment and production technology of Qingshan Machinery Factory are naturally not advanced in his eyes, and there are even a few "hand-rubbing" steps.

However, according to Tan Dexi, Factory 576 was considered a leading institution in Jingjiang Province, particularly in the production of various types of artillery, boasting a strong technical force. Of course, its scientific research capabilities were still far behind those of larger weapons enterprises.

This is determined by your own conditions.

"Teacher, if war breaks out on the southern front, what weapons would be most practical in jungle warfare and urban fighting?"

"Under-hook grenade!"

Tan Dexi answered without hesitation.

The so-called under-slung grenade is a personal grenade launcher installed under the muzzle of a rifle or submachine gun.

We don't have this thing at the moment.

But both the Eagle and the Russian have them.

It has become an indispensable fire support weapon for the infantry squads of military powers.

Tan Dexi naturally knew about this.

Liu Hongyi smiled and said softly, "How about we tinker with this thing?"

"Okay!"

Tan Dexi agreed without hesitation.

In the past, Tan Dexi would definitely not have discussed such a question with Liu Hongyi in a serious manner. Although Liu Hongyi was very smart and had an excellent learning ability, after all, he had only been studying with him for a short time, and Tan Dexi did not think he had reached such a level.

But the design information of this 35mm grenade launcher is now in front of him. What else does Old Tan have to say?

"Teacher, let's make good use of this time to produce this sample while also working on the rifle grenade."

It should be noted that Tan Dexi is currently only on secondment to the Third Research Institute, and his organizational affiliation is still with Yanggou Farm. After this "secondment" period, he will have to return to Yanggou Farm to farm.

"Your idea is good, but..."

Tan Dexi hesitated to speak, his brows furrowed tightly.

Liu Hongyi knew what he was worried about, but he was not in a hurry to say it out loud.

"Hongyi, do you know why we didn't copy the MK79?"

After a while, Tan Dexi asked.

The MK79 is a grenade launcher used by the infantry squads of the American Army, firing 40mm caliber grenades. After the American Army withdrew from Anlang, the Anlang Army captured a large number of these weapons, and we also obtained some samples.

Logically, our army, which suffers from "fear of insufficient firepower", should be in urgent need of this kind of individual grenade launcher that is convenient, applicable and powerful.

The country has also organized imitation research and development, but it has never been put into service on a large scale.

It can be seen that there must be technical difficulties that are difficult to overcome.

"why?"

Liu Hongyi asked the question even though he knew the answer.

He was very familiar with this "story".

Don’t ask why, the answer is what Tan Dexi told him himself.

"Many years ago", the county party secretary Liu Hongyi and the national treasure-level retired weapons expert Tan Dexi from Factory 576 were friends regardless of age. Tan Dexi and him got along particularly well. One was old, the other was middle-aged, and they had talked about many stories about the development of domestic army weapons.

"This MK79 is different from the howitzer you designed. The launch tube is very simple and easy to copy. The shells are not difficult to make either. The real difficulty is the mechanical fuse."

"This 40mm grenade from Eagle Sauce uses a mechanical fuse, is very safe, and is very sophisticated. We can't make it. Our manufacturing and material levels don't meet those requirements."

Tan Dexi said this and sighed, looking somewhat gloomy and annoyed.

"Teacher, is it completely impossible to figure it out?"

Liu Hongyi asked.

Tan Dexi said, "It's not completely impossible. We can make samples. However, we need to use more advanced materials and make them entirely by hand. The yield rate is also very low. Out of ten, only one or two will be qualified."

"The samples produced in this way are meaningless. They are too expensive and difficult to produce. They are impossible to be deployed on a large scale in the army."

"So, this is not a design problem, but a problem of basic industry."

Tan Dexi sighed deeply again.

He agreed immediately just now because he didn't want to dampen the enthusiasm of his "closed disciple", but now he told Liu Hongyi this to make him give up that "unrealistic" idea.

The principles of the rifle's under-slung grenade and the grenade machine gun designed by Liu Hongyi are different.

There is hope of developing a howitzer machine gun based on existing technology and materials, but it is impossible to develop a rifle with grenades hanging under it!

Tan Dexi and Factory 576 had tried this a long time ago, and facts proved that this approach did not work.

The problem is, Tan Dexi didn't know that the sixteen-year-old boy in front of him was actually a "cheat".

"Teacher, mortar."

Liu Hongyi spoke.

"what?"

Tan Dexi was a little dazed.

I was talking to you about hanging grenades, why did you talk about mortars?

Liu Hongyi said in a low voice, "Let's treat this thing as an ultralight mortar."

Tan Dexi was stunned. He stretched out his hand and pointed at his nose. His fingers began to tremble slightly, and then his whole body began to tremble...

That expression was like that of an extremely devout believer who suddenly saw God coming!