Traveling through the sword to engage in military industry.

The submarine project team, code-named Qin, is now divided into several major parts, and the shipbuilding research center is located in the Dalyan Shipyard.

Not far from the shipyard is the Acoustic Research Institute, which specializes in sonar technology.

The Radar Research Institute and the Electronics Research Institute are now located near the capital.

World of Bright Sword, Dallion Shipyard.

"Mr. Ren, today is a new milestone in the history of our industrial development," said Professor Liu Deming, head of the Ship Research Center, excitedly. "The completion and commissioning of our 4.5-ton die-forging hydraulic press will add further impetus to the shipbuilding industry."

Ren Dian nodded, but his mentality was different from that of Professor Liu Deming.

In the early days, for the development of the aviation industry, two 2-ton die forging hydraulic presses were built in Taiyuan Heavy Industry and Fengjing Heavy Industry, providing large integral forgings for fighter planes. This greatly improved the overall performance of domestic fighter planes. Then, on this basis, Ren Zhong explored and advanced, and built a 3-ton die forging hydraulic press in Northern Heavy Industry and Modu Heavy Industry respectively, which are used in energy, automobile, railway, shipbuilding, machinery and other industries, and are used to forge large turbines, steam turbine parts, wheels, bearings and other large parts. However, this has not ended Ren Zhong's pursuit of heavy-duty die forging hydraulic presses.

Starting from the year before last, on the basis of the 3-ton level, two 4.5-ton die-forging hydraulic presses were continued to be built in Dalian and Yangcheng for the shipbuilding industry, energy and machinery. Today, the first 4.5-ton die-forging hydraulic press, which is mainly for the Dalian Shipyard, is about to be cut off and put into production.

In terms of tonnage, this is the largest in the world of Liangjian. Now, the Rogue Eagle is trying to master Sandezi's technology. The two sets of 4.5-ton die-forging hydraulic presses they invested in will not be available for another two years. Although the investment in a 4.5-ton die-forging hydraulic press is huge, Ren Zhong is well aware of the huge role of these basic industries and directly decided to build two more.

Even though Todai now has the largest number of die-forging hydraulic presses in the world, they are still not enough. The two 3-ton die-forging hydraulic presses are basically monopolized by the aviation industry. Especially after the successful construction of the 5-ton die-forging hydraulic press, the two -ton presses were completely converted to aviation-only use. During the Korean War in the past two years, they produced parts for the J-A almost day and night, and made an indispensable contribution to the victory over the rogue Eagle Alliance!

Now that the war has ended, Ren Zhong has judged that there will be no large-scale war in the short term based on the current international situation and the historical development experience of the main world, so he suggested that the production of J-5A be greatly reduced, and the entire J-5A fleet should be maintained at around 1500 aircraft at most and then no longer expanded.

Although this first generation of jet fighter is now considered the best in the world, once the new generation J-4 fighter developed based on the F-7 Phantom fighter comes out, the J-5A will not be worth mentioning.

As the leader among the second-generation jet fighters, with the avionics and air-to-air missiles that Ren Zhong has promoted in advance, the J-5A will soon be crushed by jet fighters against propeller fighters, which means it will be obsolete in a few years. Therefore, Ren Zhong suggests waiting for the new generation of J-7 fighters to increase fighter production capacity.

Now, most of the production capacity in the aviation sector has been transferred to the production of urgently needed transport and passenger aircraft. Our country has a huge land area and the aviation industry has extremely broad space.

The demand for passenger planes and transport aircraft is at least calculated in the thousands. With such a large demand, even two 10,000-ton die-forging hydraulic presses running day and night would be unable to cope with it.

Now, based on the C-47 transport aircraft, two new transport aircraft and passenger aircraft have been transformed by facelifting and increasing power. According to the main world performance indicators that Ren Zhong is familiar with, they are directly named Y-7 transport aircraft. They have been replaced with the domestically produced new turboprop-5, with a thrust of 2000 horsepower, and a load capacity increased from 2.7 tons to 5 tons. The empty weight is 8.7 tons, the maximum take-off weight is 20 tons, the maximum speed is increased to 450 kilometers per hour, and the cruising range is 3000 kilometers.

Although the requirements for airports have been raised, the current airport conditions are no longer the hastily built field airports of World War II, but concrete structures. Therefore, this advantage has not had much impact, but has greatly increased the practical scope of transport aircraft.

The customized pressurized version of the aircraft is named KC50, a standard 50-seat regional airliner.

As for the C-54 transport aircraft, after it was domestically produced, it was named Y-8 transport aircraft. After replacing four turboprop-4 engines, the strength of the fuselage was strengthened, making the empty weight 5 tons; the maximum take-off weight is 18 tons. After increasing the internal fuel volume and improving the efficiency of the turboprop, the payload is 40 tons. The effective cruising range with full fuel has been increased to 10 kilometers, and the maximum flight speed exceeds 6500 kilometers per hour. It is definitely an indispensable strategic transport aircraft in China. The bomber modification H-500 is also about to complete the test flight and finalization. According to the design requirements, the H-5 can carry two 5-ton super-peace bombs or heavy air-to-ground missiles, as well as eight 2-ton heavy bombs, and has preliminary strategic attack capabilities.

As for passenger aircraft, it was converted into a 100-seat trunk passenger aircraft and named KC-100. The effective range with full fuel has been increased to 6000 kilometers. It focuses on trunk flights of more than 3000 kilometers, which can basically cover direct flights between two cities in Asia and intercontinental flights through relays, bringing the aviation industry into the mainstream industries of the world!
Not to mention that the die forging hydraulic presses support the development of the two booming basic industries of automobile, machinery, energy industry and railway industry. The production capacity of the two 3-ton units of Northern Heavy Industries and Shanghai Heavy Industries is basically not enough. The shipbuilding industry has to cut in line from time to time. After all, the shipbuilding industry now needs more than 200 transport ships or warships with a capacity of million tons.

Therefore, it is not a waste at all to add two 4.5-ton die forging hydraulic presses, especially now that we are developing submarines. Even a 3-ton die forging hydraulic press can do the job, but how can a 4.5-ton one be stronger?
Mesta 4.5 ton die forging hydraulic press

This time, Ren Zhong touched the 4.5-ton Mesta die-forging hydraulic press built by Rogue Eagle in the main world. These two super die-forging hydraulic presses have been in use until the new century. There is no doubt about the excellent design and practicality, so you can just touch them and go.

And with the previous foundation, the construction was not too difficult and it was completed in about 2 years.

It would take a long time to describe all these thoughts, but in fact, they just flashed through Ren Zhong's mind. After Professor Liu Deming finished his opening speech, he looked at Ren Zhong with joy, "Mr. Ren, on this happy day, can you say a few words to everyone?"

There was immediate applause from the audience.

There is no way. The halo of today's science and technology idol, the greatest genius in the University of Tokyo and even the world since the 19th century has been firmly placed on Ren Zhong's head.

If all the previous achievements were signed at the expense of Ren Zhong, then at least half of the world awards such as the Nobel Prize so far would have gone to Ren Zhong!

Therefore, the dozens of real researchers present at the event admired Ren Zhong from the bottom of their hearts!

"Thank you for your hard work, comrades! I know that in the past 700 days and nights, the comrades present have hardly had a day off, and have devoted themselves to the construction of our 4.5-ton die-forging hydraulic press. I am very grateful to the comrades for their selfless work, which has led to our success today! Today, this die-forging hydraulic press is a medal of honor for all comrades and a new milestone in the industrial history of our country."

"In the future, we will make more contributions to our country's industrial leadership in the world and to breaking through the technological encirclement of the West. Today's step is just a new step for us to reach the top of the world!
Finally, I would like to thank all the comrades for their hard work and selfless dedication again! Next, Professor Liu will collectively commend everyone and add new achievements to the honor list of our team! Thank you all"

Ren Zhong looked at a group of enthusiastic key researchers, gave them some simple encouragement and thanks, and of course, he did not forget to reward them according to their merits.

After he finished speaking, the audience cheered, and most of them were proud from the bottom of their hearts. They all knew what such an achievement would mean in the future. In just a few years, they had achieved a triple jump in die forging hydraulic presses and almost reached the top of this field!

This is a major event that will surely go down in history, and we are all proud of it! The ribbon-cutting ceremony is over.

Ren Zhong and Professor Liu Deming entered into a separate meeting.

As the person in charge of the submarine project, Liu Deming felt a great sense of responsibility, and this project was not comparable to destroyers and small flat-bed ships. All aspects were brand new. Not only did he have no idea about it before, even after studying so much information provided by Ren Zhong, Professor Liu Deming still felt that there were many shortcomings that he needed to ask Ren Zhong for advice.

"Mr. Ren, we have some technical knowledge after the prototype is verified, but in terms of noise reduction, to be honest, although we have some ideas after reading the data, we still feel at a loss as to how to implement it. We have basically no experience in this area in China, and we don't know how to grasp the key points."

Professor Liu Deming said with a wry smile that he had led the team to develop ships for several years. Ren Zhong provided him with a large amount of information about this industry. After studying, Liu Deming's knowledge was so high that he was considered one of the top people in the world. However, the problem was that much of his knowledge was conceptual.

For example, he is very clear that for a submarine, noise is the biggest threat. For nuclear submarines, the three recognized largest sources of radiation noise are: propellers, nuclear reactor main circulation pumps and main engine reduction gearboxes. When sailing at low speeds, the largest noise source is the main pump or gearbox. When sailing at high speeds, the largest noise source becomes the propeller.

If this problem is not solved, the hidden function of the submarine will become a joke.

Of course, there are solutions, such as laying sound-absorbing tiles on submarines. The "Aliberich" technology used by Sandezi on conventional submarines is the first generation of sound-absorbing tiles, which are made of synthetic rubber material with a thickness of about 30 mm and a cylindrical cavity with a diameter of 2-5 mm inside.

This is the maximum level of information. If you want to find out the details, you need to do experiments and verify them one by one according to this idea. These are all slow and time-consuming.

Mechanical noise is generally treated in two ways. On the one hand, the vibration of each device is reduced through reasonable design of each device, that is, the noise source is treated for noise reduction, such as taking measures to reduce the noise of diesel engines; on the other hand, the noise is isolated and absorbed in the propagation path, so as to minimize the energy radiated outward by the noise.

In terms of manufacturing, for example, advanced technology is used to carefully process the reduction gearbox, and shock-absorbing and seismic isolation technology is used for the reduction gearbox and all auxiliary equipment.

These are all directions, but they are easier said than done.

Improvements in basic processing equipment are also needed.

"Professor Liu, you just need to work hard in the aspects I provided before," Ren Zhong knew the current situation in this area. After all, his focus at this stage is mainly on nuclear submarines and the electronics industry. "In terms of processing technology, the new five-axis machining center and new machine tools are about to roll off the production line. For the processing of propellers, we will have a major breakthrough. This is of great significance for solving the noise generated by the propeller drive.

In addition, a new generation of precision machining machine tools will be successfully developed recently, and our machining accuracy will be greatly improved. I believe that the suppression of mechanical noise will be further improved. "

The five-axis linkage machining center is also called the five-axis machining center. It is a high-tech, high-precision machining center specially used for machining complex curved surfaces. This machining center system has a significant influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. The five-axis linkage CNC machining center system is the only means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, turbine rotors, large diesel engine crankshafts, etc.

The five-axis machining center has five axes: x, y, z, a, and c. The xyz and ac axes form five-axis linkage machining. It excels in spatial curved surface machining, special-shaped machining, hollowing machining, punching, oblique holes, bevel cutting and other functions. From a normal development perspective, this would not have been developed until the 70s. It was necessary to wait until computer technology, machine tool control, etc. developed to a certain stage before it could be developed. However, in this world of Bright Sword, with Ren Zhong's purchases, computer boards can be customized directly in the main world, and the design instructions of the five-axis machining center and other information are relatively easy to obtain. Ren Zhong also spent a lot of money to obtain a set of five-axis machining center programs. Therefore, the machine tool research center in the world of Bright Sword can break through historical limitations and research it out in advance.

The initial research version was a large five-axis machining center equipped with a processing table with an extra-large work surface of 22000 mm × 10000 mm.

"That's great," Liu Deming said happily, "This way, I feel much more at ease. Mr. Ren, to be honest, I don't want our submarine to be discovered before it leaves the Yellow Sea."

"No, there is no sonar that powerful yet." Ren Zhong shook his head. "If our Qin-class submarine design goals are achieved, it will at least be the world's leading submarine for now. Professor Liu doesn't need to worry too much, but there is one thing you need to pay attention to."

"Mr. Ren, what's the matter?" Liu Deming asked cautiously.

“Both our tools and our plans are top secret now. Even the ideas for improving submarines are very advanced technologies in the world today. We would rather hand them over to controllable and reliable people than expand the scope of technical knowledge without authorization for the sake of progress.” Ren Zhong said seriously. Although it is convenient for him to purchase these things from the main world now, in the historical time and space of the main world, it may take ten or even more than ten years of research to gain experience and direction.

Even if a little bit of ideas were leaked out, it would be an immeasurable loss to a terrible opponent like the Rogue Eagle. They now have the largest number of engineers and talented scientists on Blue Planet. A little inspiration could lead to a new breakthrough.

"I understand. I will work with the security department to identify the researchers and ensure their safety and confidentiality." Liu Deming said solemnly.

It can be said that the nuclear submarine is the most mysterious project on the blue planet now. Its appearance will greatly change the balance of power between major powers. It is a key project that will overtake others and develop asymmetric combat power!
Many people are destined to sacrifice their lives and live in anonymity in a bustling city!
Only in this way can Ren Zhong keep the secret and secretly build the strongest submarine force without the opponent knowing!

Things like the 3-ton and 4.5-ton die-forging hydraulic presses are now kept as top secret, and the entire large workshop has the strictest confidentiality measures.

Liu Deming's team is the core integration department of the nuclear submarine, so Ren Zhong must of course instruct them to keep it confidential. Fortunately, Xiaohu is in charge of this. Today, Xiaohu has grown into the first director of the Security Department of the Liming Research Institute and has introduced two sets of internal and external security teams. So far, there have been no major problems in security protection. This is not only due to Xiaohu's contribution, but more importantly, it is because the brigade commander has sent a large number of talents to the front line!

Compared to others, the brigade commander has a much deeper understanding of the importance of the Dawn Research Institute.

Therefore, during the post-war construction of the Military Engineering Academy, since most of the departments came from the period when Ren Zhong was in charge of the Military Industry Special Operations Department, the brigade commander also discussed with Ren Zhong the idea of ​​introducing a large number of team leaders and core teaching staff from the Dawn Research Institute to the Military Engineering Academy.

Ren Zhong certainly would not object to this. He even discussed with the brigade commander how to establish a new mechanism that combines teaching and scientific research by these front-line experts.

In order to train more talents for the further development of the military industry, Ren Zhong finally handed over the work of the Military Industry Special Section during the Anti-Japanese University period. The Military Industry Special Section completed its historical mission and eventually evolved into a stronger professional military industry college. (End of this chapter)