The discussion continued until others went to work, and the designers who had not slept all night washed their faces and then returned to their own positions.

For them, it is very normal for them to stay up late and continue to work after staying up late.

Just as the quote says: Ten thousand years are too long, you have to seize the day!

The Republic finally ended the turmoil. They finally had the opportunity to apply what they had learned in their lives and contribute to the national defense cause of their motherland. Naturally, they had to recover the lost time. This is how they are. For the sake of the country, they can give up everything.

Everything is just because they hope to have a strong motherland, and hope that under the protection of the motherland's powerful national defense force, they will no longer be bullied by the great powers!

From the time when Britain's giant ships and cannons bombarded the country's gates of the corrupt Qing government in 1840, to the founding of New China, a total of 109 years, the entire land of China was in turmoil. Many patriots wanted to develop the national defense industry, but without the support of the state, everything became a silence. The country was still weak, and a small island country could actually bring severe disasters to the vast China for more than ten years!

All of this is because the country does not have a strong defense industry.

Now, the country strongly supports the development of cutting-edge national defense industry, so they naturally cannot give up such opportunities.

As long as the tank is created, the pressure on the northern border will be much lower. Because the tanks of the Republic are a whole generation worse than those of the Soviet Union. The number is even less than that of the Soviets! Once the Soviets start attacking, their steel torrent will easily crush the capital of the Republic!

Liu Yijiu was the same, discussing all night. Although he was very tired, his mental state was not too bad.

The modification plan of the Wujiu Tank has been completely finalized, and there is no need to do technical demonstrations or something. Their projects are independently established, which can completely avoid this. Of course, if Liu Yijiu had not been very confident in implementing these technologies, he would not have done technical demonstrations.

Otherwise, the tank prototype will be created in the future and it will fall apart after one shot, and this joke will be a big deal.

In the sink outside the office of District 9, he turned on the faucet and washed his face randomly with clear water in his hands. He became much more energetic. Liu Yijiu and Yu Mingjiang, the head of the fire control system design, went to the production workshop of tank gun research, together with Yu Mingjiang, the person in charge of the fire control system design.

Since last year, we have been studying how to upgrade the 59 tank's 100mm tank gun to a 105mm rifled gun.

Although the caliber is only five millimeters higher, the difficulties here are definitely not small for the Republic with weak foundations. What's more, the development of a 120 mm 50-times caliber barrel has also been carried out.

The 50-caliber tank gun of the 120 smoothbore gun is mainly composed of smoothbore body tube, horizontal wedge gun tail and gun bolt, cylinder sway, control rod anti-recoil device, body tube thermal sheath and other components. The gun weighs 2,600 kg in total. Its structural features are simple and compact, reliable in work, and easy to use. In order to speed up the work, after Liu Yijiu provided the new gun steel with production technology and raw material formula was manufactured on a small scale, Liu Yijiu stayed up late to draw these drawings.

He has studied these things and has a deep memory of the drawings.

Of course, he often doesn't pay much attention to some non-critical aspects, which requires researchers to provide support...

Originally, most people in the base tend to use 125mm smoothbore cannons. After all, the Soviet-style standard has always been adopted in China. Now they have t64 and t72. They all have 125mm smoothbore cannons, so they naturally prefer this solution.

Liu Yijiu knew that the Republic would soon introduce 105mm rifled guns in the UK, so when the whole world started to use smoothbore guns, he had to waste money and his energy to get it out. The whole world. In the future, only British tanks will be equipped with 105 rifled guns. How many tanks will the entire UK country be equipped with? The entire NATO standard is 120mm smoothbore guns. If you want to export them to NATO countries, you must make the ammunition of the tank guns universal! Warsaw Pact countries are really too poor.

The power of 125 is not much greater than that of 120.

The smoothbore guns introduced from abroad in the mid-1990s from the Republic could penetrate most of the third-generation tanks equipped by countries around the world in the early 21st century within a range of 2,000 meters! Liu Yijiu appeared, so it was impossible to penetrate the leopard 2, m1a2 that could not be penetrated!

The 120mm tank gun produced by the Ninth Court now is similar to the Type 59 100mm tank gun and the Type 83 105mm tank gun that will appear in a few years (this thing was introduced from the UK). It has a similar quality and the interface size of the turret and other components, but it has greater power!

"Director Liu, President Yu, didn't sleep last night?" Chen Yang, a tank gun designer who was fiddling with a group of technicians to make wood, asked in surprise. "The body is the capital of revolution!"

"It's okay. Last night, I mainly discussed the assembly design plan of the Wujiu Reform Project. How are you doing here? Haven't you started to put materials into trial production for sample?" Liu Yijiu nodded and said indifferently.

"We are now starting to prepare materials. Director Liu, these design plans are really fine? Especially the self-tightening process of the gun barrel, we have never been in contact with it. The caliber has increased by 20 mm, and the weight has not increased. We always have no bottom in our hearts..." Chen Yang said with a wry smile.

The entire cannon adopts a brand new design concept. Even the artifacts that they have only heard of are adopted. Without further demonstration, Liu Yijiu asked them to complete the design of some non-key parts, and then directly put them into production to formulate the production process of the sample cannon...

This kind of thing is really scary.

"No problem, have you done this wood model for a long time, and you are constantly calculating various data? You won't even believe the calculated data, right? You are skeptical, which is necessary, but you have to experiment boldly..." Liu Yijiu looked at the wood model and felt a little depressed.

There is no advanced computer or three-dimensional simulation software to accompany it. If you want to analyze the structure from the overall design and perform various strength calculations, you can only use wood to make the model...

"What's more, this is not something that will be used directly after being produced. It also requires various experiments and tests!" Liu Yijiu's words made Chen Yang and others feel confident.

They all knew Liu Yijiu's magic. As he said, if there is a real problem, it will be solved in the end when the experiment is done. If the sample is not produced, the problem will never be found, and it is even more impossible to talk about any improvement plan.

"It takes money!" Yu Yang said with some heartache after all the hard years.

There has never been many wastes in the Republic's experiments.

This is a miracle in the whole world. Just because the Republic is poor!

Dongfeng 2, after only one failure, it succeeded!

"Money is not a problem! You only need to be responsible for various technical research. If you cannot save money, you must never save money!" Liu Yijiu emphasized again.

The Republic is always thrifty and frugal, which makes technical research and development very conservative. Many designs use mature technologies and design solutions, which will eventually cause greater waste. It also limits the thinking of designers.

The best example is -7.

Now Liu Yijiu must correct this problem from the beginning. The money that should be wasted must not be saved! Otherwise, it will cause greater waste.

Only by failing can greater success be achieved.

The Soviets invested heavily in weapons development, while the Americans were even more stingy. Basically, all kinds of weapons were piled up with money. Therefore, their weapons and equipment developed very quickly. The Republic realized this problem until the second decade of the 21st century passed, and had money on hand, and vigorously used money to smash weapons and equipment technology.

"Is it necessary for us to get these 105 guns? It would be a waste to get two guns at the same time..." The funding issue of the base was not considered by them, but it really had to save what was saved.

Therefore, Yu Mingjiang also felt that it was another 105 gun, another 120 gun, and even a third 125 gun design plan...

The diameters are not much different, and the power is almost the same, so there is no need.

"No, we have to do it! The rifled gun and the smoothbore gun are two different guns. If our 105 rifled gun can reach the power of the naval gun, wouldn't our tanks have a stronger attack power?" Although Liu Yijiu knew that two kilometers away, there were basically artillery attack ranges, in order to save the country a foreign exchange for introducing such guns from the UK, he had to do it.

Even if it is useless, it is good to use it as a technical reserve.

Although his reasons were far-fetched, Yu Mingjiang didn't say anything else.

This was the plan formulated at the beginning. It was temporarily named the 59th-change new tank project, producing two prototype cars, one equipped with 105 rifled guns, the other equipped with 120 smoothbore guns, and may even be equipped with 125 smoothbore guns. After all, considering that the war broke out with the Soviet Union on the northern border, seized ammunition can be used to supplement...

"The chrome plating process of the barrel inside the barrel needs to be carefully studied. This can effectively improve the stability of the ballistic performance of the artillery during the life of the barrel, so that the artillery always maintains the ballistic performance and the shooting accuracy until the end of the life of the barrel... The chrome plating inside the barrel is also convenient for maintenance and improves the anti-corrosion performance..." Liu Yijiu didn't understand the technology of chrome plating inside the barrel, anyway, just explain it.
Chapter completed!