blood feud

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

He knew very well in his heart that the resources of the Feilong Expeditionary Army were pitifully small.If the experiments are carried out step by step and graded in this way, the waste will be too great.

Ships below 3000 tons were still able to design and manufacture ships in the Jiangnan Shipyard and Dalian Shipyard during the period of warlord melee in China.

The so-called navy of the puppet Manchukuo, including the inland river ships that the little devils invaded the Yangtze River Basin, were all produced in Dalian, and all of them were 300-2000 tons.

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

But for a ship of this level, it's useless now.Because the little devil's local Sasebo Shipyard and Wugang Shipyard now produce warships with a tonnage of more than 2 tons.Especially the Yamato and Musashi, the tonnage has reached 6 tons.

If you want to compete with the little devil, you must not stand still. The 5000-ton class meets the 6-ton class of the little devil, so what else can it do?

Therefore, Lu Ming immediately adjusted his research direction, directly doubling the standard displacement of 1.5 tons for the third stage, starting from 3 tons.

Since you want to start from scratch, you can do it in one step.Even if you fail, you can still accumulate experience in building large ships.

During this period, more than 30 little devil engineers 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 has been rigorous and meticulous.

It can be said that in the process of continuously transforming 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, especially the manufacture of steam turbines.

It's a pity that there is no ability to produce transmission shafts, high-strength gear sets, and high-thrust propellers. Otherwise, Cangyunli Shipyard is also preparing to develop steam turbines.

Now, Bai Shujie was frowning, and Lu Ming's heart began to fluctuate. He was not worried that his senior brother would scold him badly.

If he scolded himself badly, he would be able to exchange for a large-tonnage warship. Lu Ming wished that his brother scolded him every day.Instead, they are worried that if they fail completely, the blow to morale will be too serious.

Except for joking, Bai Shujie seldom swears, and he is even less likely to swear when it comes to core technology.

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

"Lu Ming, the overall guiding ideology of this battlecruiser is not wrong, and the basic plan of the hull is also feasible. However, our designers have not thoroughly grasped the core technology of steam turbines, so there are too many mechanical things, which is 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 a boiler and a turbine. The boiler is called a steam generator, which uses fuel to produce steam with sufficient quantity, sufficient temperature, and sufficient pressure."

"How can water vapor meet this requirement? This involves the problem of the expansion coefficient of steam. Take artillery shells as an example. If they want to be powerful, they must let the explosive gas expand rapidly at the moment the gunpowder burns, so as to achieve lethality." enemy's purpose."

"For a steam turbine, the first thing to consider is to let the steam expand 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. "

"To make the steam expand, we need a temperature guarantee. We use heavy oil as fuel, its combustion heat value is certain, and the temperature and pressure of the steam produced are also certain."

"If you want to let the steam expand and pressurize continuously when the temperature of the boiler is constant, this involves how to design the steam flow method. This method is called the turbofan step-by-step pressurization method. Theoretically speaking, the increased The more stages, the greater the pressure generated by the same amount of steam, and the stronger the power it can provide."

"However, the more stages of supercharging, the larger the size of the turbine. You should know that the hull we designed is fixed, and the contradiction arises. If you want more power, you need a bigger turbine. Bigger The turbine needs a larger hull. The hull cannot be enlarged infinitely, so it is necessary to find an optimal fit point."

"This matching point is the set speed. I require more than 39 knots, which is the subject that our engine team needs to study. Of course, cascade staging will make the engine longer and heavier, and the weight will become extremely large. The produced The ship can't hold things at all. This problem needs to be solved, otherwise it will still be unusable."

"Since it is too long to connect the stages in series, we should find a way within the limited space and weight. The turbines can be divided into three or four groups, and the mode of series and parallel crossover can also be used to make the steam cycle The stages build up, and then the jets go out and drive our propshafts."

"In order for the propeller to have a high propulsion efficiency, its speed should not be too high. Because the surface of the rapidly rotating propeller will generate strong friction with the water, causing the water in the contact part to vaporize and produce cavitation. It consumes a lot of energy. Instead of increasing propulsion, it decreases."

"A new problem has arisen all of a sudden. It needs a strong propulsion force, but the speed of the propeller should not be too high. This is another contradiction. That is to say, the steam turbine cannot directly drive the drive shaft of the propeller, but needs a An energy transfer device that controls the speed of the propeller."

"Look for an energy transmission device, and then transmit the powerful driving force of the steam turbine at an optimal propeller speed, so as to provide the maximum thrust and maximum speed for the warship. Therefore, we need to pay attention to another core component, that It's the gearbox."

"What exactly is a gearbox? That is the bearing and gear I mentioned at the beginning. After scientific combination, it forms a control device that can adjust the speed of the propeller at will."

"According to the standard displacement of 3 tons to 6 tons, you go back and tell them that when the warship is running at high speed, the propeller speed is generally 150 to 250 rpm, and it must not exceed 360 rpm."

"Now that the single-shaft propulsion of American steam turbines has exceeded 1.8 horsepower, it is reasonable to adopt a four-shaft propulsion scheme. I agree with this parallel scheme."

"It's like listening to heaven, it's such a complicated feeling." Lu Ming patted his forehead: "Thank God, I'm finally relieved that you didn't completely reject this plan. We have completed the hull stability and anti-wind and wave tests. The next thing is outfitting. If you veto it, everyone will be very sad."

Bai Shujie said solemnly: "To deal with science and technology, we need not only a rigorous attitude and a down-to-earth style, but also the courage to despise everything, bold experiments, and an innovative spirit that breaks traditional concepts. Let them do it freely, and reward them all when they succeed. .”

"In order to encourage them to innovate bravely, this first battlecruiser is called the 'Founding Class', and the first ship is called the 'Shihuang'. I hope they will show the courage to open up the world, overcome all difficulties, and create our own Battlecruiser."

"No matter what the result is, the 'Shihuang' will be the flagship of our headquarters and Bai Shujie's future ship. As long as they don't let me sink into the sea as soon as I get on the ship, then go ahead and do it."

Just at this time, Gan Tong came in and said, "It just so happens that both of you are here, and there is one more thing to say. Although we dismantled a lot, the last time we seized more than 11 ships. There are still 3 ships 7 The 18-ton freighter, plus these [-] ships, makes a total of [-] ships."

"The day before yesterday I went to the city to attend the joint meeting of the party, government and military. Although the land reform this year is progressing very well, there is too little arable land here, and the adjustment of industrial structure has just begun. Food is still a big problem. It is best to use the American flag to run Take a trip to Nanyang and buy a batch of brown sugar and grain back."

"At the same time, we can also ask the Pyongyang Municipal Bureau of Industry and Commerce to send people out to bring our agricultural and sideline products there to see if we can exchange some daily necessities. Our food reserves are already reaching the warning line, and we need to prevent accidents in advance."

Bai Shujie nodded in agreement: "One trip is not enough, two trips are enough. Anyway, this is our own boat and can be used anywhere. Caiqin can rent it at any time, so it's not a big problem."

"The food is not needed for the time being." Xiao Lamei hurried in and said, "Didn't Capone and the others go out? They snatched 7 5-ton cargo ships belonging to the little devil, 2 of which were for food and [-] for oil." .”

"Oh my god, how is it possible?" Bai Shujie said in surprise: "They went out after only one month of training at the naval base? They just played the piano randomly. What tricks are Zhang Bingyang and Ge Yougui doing. I will still have the power of Capone in the future." Great use. Once it is scrapped ahead of time, all of Lao Tzu’s designs will be useless.”

"Yeah, I didn't tell you about this." Xiao Lamei said with a smile: "That Capone said that you can't learn anything by parking the boat on the dock. So he asked Commander Zhang to send two destroyers to each post. All the commanders have gone directly to sea in the way of one belt and one."

"Last night, I ambushed a fleet with the sun flag on Chiwei Island. I didn't expect to succeed in one fell swoop. Now it has crossed Jeju Island and is on its way back. It seems that a guy was about to send an SOS distress signal, but he was killed. The fleet The news of the robbery should not have leaked."

"Order: dispatch two fighter jets and a three-aircraft formation to cruise immediately to see where they are." Bai Shujie nodded: "Gan Tong's plan will continue to be implemented, and five ships of food cannot solve the fundamental problem. The future situation will become more and more complicated. We need to prepare food reserves for two years, which is also the minimum warning line."

There was no extraordinary change in the matter, because Capone and the others followed Bai Shujie's instructions, and this time they fought and retreated quickly, without letting others react at all.

At five o'clock in the morning on July 1938, 7, the fleet had been towed into the Cangyunli Shipyard.Bai Shujie drove over and took a look. The expression on his face was a half-smile, and he suddenly became a little weird.

After all, what happens next, let's see the breakdown in the next chapter.