Cangyunli Shipyard completed the balance performance test of the new hull, and Lu Ming happened to be arranged by Bai Shujie to be in charge of ship R&D and manufacturing.

He knew very well in his heart that the resources of the Wyvern Expeditionary Force were pitiful. If you do it step by step, it will be too wasteful.

Ships below 3,000 tons, when the country was still in the warlord melee, Jiangnan Shipyard and Dalian Shipyard were able to design and manufacture.

The so-called navy of the puppet Manchukuo, including the inland river warships invaded by the little devils in the Yangtze River valley, were all produced in Dalian, and all of them were 300 to 2,000 tons.

The "Qinren," "Shuntian," and "Fumin," shallow water heavy gunboats that were captured not long ago were all produced by the Dalian Shipyard. The little devil took out his own drawings and steam turbines, and everything else was made in the shipyard.

But a ship of this class, now this is useless at all. Because of the little devil's local Sasebo Shipyard and Kure Port Shipyard, the warships that are now being made are all more than 20,000 tons of tonnage. In particular, the tonnage of the Yamato and Musashi has reached 60,000 tons.

If you want to compete with the little devils, you must not stand still. 5,000 tons meets 60,000 tons of little devils, so what else can you do?

Therefore, Lu Ming immediately adjusted the direction of his research, and directly doubled the original standard displacement of 15,000 tons of the third stage, starting from 30,000 tons.

Since you want to start from scratch, let's do it in one step. Even if you fail, you will be able to gain experience in building large ships.

During this period, there were more than 30 little devil engineers who were captured from Jinzhou, Yingkou, Dalian, and Lushun, and they played a huge role. Although the work is carried out under armed supervision, every design link is rigorous and meticulous.

It can be said that in the process of continuously renovating old ships, the engineers of these little devils are the best teachers and professors. Our own engineers and technicians have learned a lot of core technologies from it, especially in the manufacture of steam turbines.

It is a pity that there is no capacity to produce propeller shafts, high-strength gear sets, and high-thrust propellers, otherwise, the Cangyunli shipyard is still preparing to develop steam turbines.

Now, Bai Shujie frowned, and Lu Ming's heart began to go up and down, he was not worried that his senior brother would scold him.

If he scolds himself, he can exchange it for a large-tonnage warship, and Lu Ming can't wait for his senior brother to scold him every day. Rather, they are worried that in the event of a complete defeat, the blow to morale will be too severe.

Bai Shujie rarely scolds people except for joking, and it is even more impossible for him to scold people in terms of treating core technologies.

After reading the plan quickly, Bai Shujie sat down at the desk and grabbed the pen and worked hard to write, and it took about half an hour before he stopped writing.

"Lu Ming, the guiding ideology of this battlecruiser as a whole is not wrong, and the basic scheme of the hull is also feasible. However, our designers did not thoroughly understand the core technology of the steam turbine, so there were too many rigid things, which was not conducive to their future development. ”

Bai Shujie shook the three pieces of paper in his hand and continued: "The steam turbine is mainly composed of two parts: the boiler and the turbine. The boiler is called a steam generator, which uses fuel to produce sufficient quantity, sufficient temperature and sufficient pressure. ”

"How can we make water vapor meet this requirement? This brings us to the issue of the coefficient of expansion of the vapor. Take the artillery shell as an example, if it is to be powerful, it must make the explosive gas expand rapidly at the moment when the gunpowder burns, so as to achieve the purpose of killing and injuring the enemy. ”

"For steam turbines, the first thing to consider is to expand the water vapor as much as possible. However, the space inside the boiler is certain, so the higher the expansion coefficient, the greater the pressure of the steam and the stronger the explosive force. ”

"In order for the steam to expand, the temperature needs to be guaranteed. We use heavy oil as fuel, and its combustion calorific value is constant, and the temperature and pressure of the steam produced are also certain. ”

"In order to keep the steam expanding and pressurized at the same temperature of the boiler, it is a question of how to design the way the steam flows. This method is called the turbofan step-by-step pressurization method. Theoretically, the more stages are added, the more pressure the same amount of steam will produce and the more power it can provide. ”

"However, the more stages there are, the larger the turbine will be. You should know that the hull we designed is certain, and the contradiction comes out. If you want more power, you need bigger turbines. Larger engines require larger hulls to fit. The hull can't be scaled up indefinitely, so you need to find an optimal fit. ”

"This point of convergence is the set speed. I'm asking for more than 39 knots, and that's what we need to look into. Tandem grading, of course, makes the turbine longer and heavier. The ships produced in this way can't be loaded at all. This problem needs to be solved, otherwise it still can't be used. ”

"Since it is too long to connect the series together, we should find a way to do it within the limited space and weight. The turbine can be divided into three or four groups, and the series and parallel cross use mode can also increase the number of stages of the steam cycle, and then spray out to drive our propeller shaft. ”

"In order for the propeller to have a high propulsion efficiency, its rotational speed must not be too high. Because the rapidly rotating surface of the propeller will create a strong friction force with the water, the water in the contact part of the guide will vaporize, resulting in cavitation, which consumes a lot of energy. Instead of increasing, propulsion decreases. ”

"This suddenly created a new problem, both strong propulsion and the propeller speed should not be too high, which is another contradiction. In other words, the steam turbine cannot directly drive the propeller's propeller shaft, but needs an energy transfer device that can control the speed of the propeller. ”

"Look for an energy transfer device, and then transfer the powerful propulsion of the steam turbine to an optimal propeller speed to give the battleship maximum thrust and produce the maximum speed. So we need to focus on another core component, which is the gearbox. ”

"What the hell is a gearbox? That's what I said at the beginning, the bearings and gears, which were scientifically combined to form a control device that could adjust the speed of the propeller at will. ”

"According to the standard displacement of 30,000 to 60,000 tons, you go back and tell them that when the battleship is running at high speed, the propeller speed is generally 150~250 rpm, and it should never exceed 360 revolutions per minute."

"Now the single-shaft propulsion of the American steam turbine has exceeded 18,000 horsepower, so the four-shaft propulsion scheme is reasonable, and I agree with this parallel scheme."

"I'm listening to a book from heaven, I have such complicated feelings." Lu Ming patted his forehead: "Thank God, you didn't completely reject this plan, I finally breathe a sigh of relief." We've completed the hull stability and wind and wave resistance tests, and the next step is outfitting. If you veto, everyone will be very sad. ”

Bai Shujie said sternly: "To treat science and technology, we need not only a rigorous attitude and a down-to-earth style, but also the courage to despise and experiment boldly, and more importantly, to have the innovative spirit of breaking the traditional concept." Let them do it, and reward them all when they succeed. ”

"In order to encourage them to innovate, this first battle cruiser was called the 'Founding Class', and the first was called the 'First Emperor'. I hope that they will show the courage to break new ground, overcome a single difficulty, and build our own battle cruisers. ”

"No matter what the result is, the 'First Emperor' will be the flagship of our headquarters in the future, and it will also be Bai Shujie's future ship. As long as they don't let Lao Tzu sink into the sea as soon as he gets on the boat, then let it go. ”

At this moment, Gan Tong came in and said, "It just so happens that you two are here, and there is one more thing to say." Although we dismantled a lot, we captured more than 700 ships last time. At present, there are 11 30,000-ton cargo ships, plus these 7, a total of 18 ships. ”

"The day before yesterday, I went to the city to attend a joint meeting of the party, government and the army, and although the progress of this year's land reform is very good, there is too little arable land here, and the adjustment of the industrial structure has just begun, and grain is still a big problem. It is best to use the American flag to make a trip to the South Seas and buy a batch of brown sugar and grain back. ”

"At the same time, we can also ask the Pyongyang City Bureau of Industry and Commerce to send people out to bring our agricultural and sideline products over to see if we can exchange some daily necessities. Our grain reserves are already on the alert line, and we need to take precautions in advance. ”

Bai Shujie nodded in agreement: "If one trip is not enough, we can make two trips, anyway, this is our own ship, and it can be used anywhere." Cai Qin can be rented at any time, so it's not a big problem. ”

"The food is not needed for the time being." Xiao Lamei hurriedly came in and said, "Didn't Capone go out?" As soon as he made a move, he robbed 7 10,000-ton freighters of the little devils, of which 5 ships were grain and 2 ships were oil. ”

"Oh my God, how is that possible?" Bai Shujie said in surprise: "They have only been training at the naval base for a month, and then they have gone out?" It's just playing the piano randomly, what are Zhang Bingyang and Ge Yougui doing. Capone's power will be of great use to Lao Tzu in the future. Once scrapped in advance, Lao Tzu's design was completely scrapped. ”

"yes, I didn't tell you about it." Xiao Lamei said with a smile: "That Capone said that if you park the boat on the dock, you won't learn anything at all." Therefore, he asked Commander Zhang to send all the commanders of each post of the two destroyers and go directly to sea in a belt-and-one way. ”

"Last night, I ambushed a fleet of ships with a sun flag on Chiwei Island, but I didn't expect it to be successful in one fell swoop. It has now crossed Jeju Island and is on its way back. It seems that a guy wanted to send an SOS distress signal, but he was killed, and the news of the ship's hijacking should not have leaked. ”

"Order: Send two fighters and three planes to patrol immediately and see where they go." Bai Shujie nodded: "Gan Tong's plan continues to be implemented, and 5 boats of grain cannot solve the fundamental problem." The shape of the future will become more and more complicated, and we need to prepare two years of food reserves, which is also the minimum warning line. ”

There was no change in the matter, because Capone and the others followed Bai Shujie's instructions, and this time they fought quickly and withdrew, and they didn't let others react at all.

At five o'clock in the morning on July 22, 1938, the fleet had been towed into the Cangyunli shipyard. Bai Shujie drove over and took a look, the expression on his face seemed to be smiling, and he suddenly became a little strange.

After all, what happens next, let's see how it will be broken down next time.