Open an aircraft carrier to fight against Japan

Gao Ninghai couldn't help being taken aback when he heard this, and asked, "What's simpler than this?"

Lin Yuan said: "The first step in missile design is to analyze the characteristics of the target. The target of the ground-penetrating missile is the rock on the ground. This is the same as the target that our drilling equipment needs to deal with! Therefore, I hope you can analyze the characteristics of the target. Experience with the mechanical properties of rock is applied to the design of drill bits."

Gao Ninghai nodded and said, "I understand. Whether it is penetrating with missiles or digging with drill bits, it will damage the rock. From the theory of material mechanics, it is the same. I have almost thought of how to design the drill bit."

Lin Yuan said: "The material of the drill bit must be very hard. Our power generation equipment is already in preparation. When the electric arc steelmaking furnace starts to operate, we will be able to produce high-hardness manganese steel. At that time, our drill bit material will be There is."

Lin Yuan said: "Everyone must have thought of it. When our drill bit smashes the underground rock, a large amount of debris will be formed. They will block in front of the drill bit and prevent the drill bit from advancing, so..."

Having said that, Lin Yuan turned his head to look at Su Zhengming, and said with a smile, "Mr. Su, it's time for your major to play."

Su Zhengming was taken aback, and said, "What does this have to do with my major?"

Lin Yuan said: "The rod behind the drill bit is empty, and there are small holes on the drill bit. We need to add mud to the rod. During the process of drilling down the drill bit, the mud is sprayed out from the small hole on the drill bit. The mud It will come out between the drill pipe and the rock wall with debris, and our drill bit can continue to drill.”

Lin Yuan went on to say: "The mud is not made randomly. It needs to have good viscosity so that the debris can be brought up from below. This is the category of non-metallic materials."

Su Zhengming thought for a while and said, "As long as I know the composition of the debris, it's not too difficult to make such a mud."

Lin Yuan looked at Zhou Huaxin again, and said, "Mr. Zhou, it's your turn to play next. You need to design a pressurization system for these muds. They have to enter hundreds of meters deep underground and then return to the surface, so the pressure required It must be not small."

Zhou Huaxin said: "We can use air to propel them. The design of such an air nozzle is not difficult. However, we need power. The existing electric motor equipment may not be enough to complete this task." Lin Yuan said: "Academician Liao Ming is working To modify the turbofan-30 engine, I asked him to modify one more engine for your use, you only need to design the air nozzle."

Zhou Huaxin said with a smile: "With the help of Turbofan-30, there will be no problem!"

Lin Yuan smiled and said, "Okay, Mr. Liu will be in charge of the materials. I hope everyone can complete the design as soon as possible." After everything was ready, Lin Yuan ordered the troops to seal off the ten square kilometers of Liaohe Oilfield and set up an oil industrial zone However, since the oil industry was still in its infancy in the world at this time, Lin Yuan didn't want too many people to know, so he declared that this industrial area was a paleontological research center.Lin Yuan finally heaved a sigh of relief after arranging the affairs of the petroleum industry properly. Since then, electricity, petroleum, and iron and steel metallurgy have been preliminarily established. In addition, the inorganic chemical plant moved from Ryukyu has laid the foundation for the establishment of a modern industrial system. The foundation is over.

Just when Lin Yuan was planning his next step of development, a teacher sent a document. He looked through it and read: The lower reaches of the Songhua River have experienced heavy rain, and the river between Sanxingcheng and Lahasusu has surged. The river overflowed its course and flooded a large area of ​​land. "

Seeing the flood, Lin Yuan was not worried, and asked, "Has there been any casualties?"

The master said: "My lord, please rest assured that this area is a wasteland and there are no people living there, so there will be no casualties."

Lin Yuan thought to himself: "It's such a pity that such a good cultivated land is wasted in vain." Suddenly, a terrible thought popped up, and Lin Yuan said to the master: "I want to go out for a while, whether it is Anyone who comes to see me will say that I am sick, and no one will see me! Do you understand?"

The master obediently agreed, and Lin Yuan hurriedly led people to Sanxing City. The reason why Lin Yuan left in such a hurry was because he thought that the Russians might take this opportunity to counterattack Laha Susu!

Although the Russians were completely defeated by the troops commanded by Lin Yuan in Jilin and Heilongjiang provinces, they still occupied the key strongholds in the mountains. Among them, the Wanda Mountain Fortress Group is behind the side of Laha Susu. If the Russian troops there are dispatched , It is very likely to cut off the connection between Laha Susu and the city of three surnames.

There is only one river between Lahasusu and Khabarovsk of the Russians. The Russians have hoarded heavy troops in Khabarovsk and are ready to counterattack at any time. Moreover, there is another more important reason for the Russians to counterattack Lahasusu. That is It was this city that Lin Yuan ordered his troops to attack and capture during the negotiations with the Russians. The Russians kept holding back their anger!

The reason why the Russians did not dare to counterattack easily is because in Sanxing City, there is a powerful inland river fleet stationed. This fleet is named after the place, called the Songhua River Fleet. Ling led the craftsmen of the Jilin Machinery Bureau to build twelve new gunboats. These gunboats were equipped with captured Russian 75mm rapid-fire guns. And down, you can attack when you advance, and you can defend when you retreat.

The Songhua River flows from the south of Laha Susu, then turns northeast and flows north into Heilongjiang. In this way, whether it is the Russian army in Wandashan Fortress or the Russian army in Khabarovsk, they want to attack Laha Susu has to pass the Songhua River Fleet.

But this heavy rain prevented the Songhua River Fleet from supporting Laha Susu!

At this time, Sanxing City has become the core of fighting against the Russian army. The Songhua River Fleet and the Second Brigade of the First Division are stationed here. As soon as Lin Yuan arrived in Sanxing City, he contacted the No. The first battalion of the second brigade, the battalion commander is a squad leader of the Marine Corps, named Zhang Yao.

As soon as Zhang Yao heard that it was Lin Yuan, he quickly reported: "Yesterday, we found a small Russian reconnaissance team of twelve people in the southern suburbs, and we ignored it!"

Just as Lin Yuan was about to speak, he heard anxious shouts from Zhang Yao: "Battle Commander, a large number of Russian troops were found five kilometers south of the city, with more than [-] in number!"

When Lin Yuan heard this, he quickly ordered: "You are ready to withdraw to Sanxing City immediately! Give up Lahasusu!" Zhang Yao said in surprise after hearing this: "Captain, although we did not take too much money to take down Lahasusu Jiner, but it’s such a pity to give up like this?”

Lin Yuan said: "There is nothing to regret. When you hit the enemy, should you retract your fist first, and then punch it out more powerfully, or should you punch it straight out more powerfully?"

Zhang Yao said: "Of course it's better to retract it first, but..."

Lin Yuan said, "I told you to retreat just to take back your fists!"

Zhang Yao said: "We can't retreat! There are more than 3 ordinary people in the city! The old man broke through the city, and the ordinary people are all gone!"

Lin Yuan didn't think about this either. He knew that if he defended to the death, the battalion of more than 500 people would be wiped out without support. If he retreated, the more than 3 people in the city would be massacred do!

Lin Yuan thought silently: "Can the Songhua River fleet risk crossing the flood?"