In this cave, no one can really understand what kind of person Song Biao is, let alone them. Even Song Biao's high school classmates and comrades in the battalion headquarters don't know. Everyone only knows that Song Biao is a very good person.
Awkward awesome guy.
In Song Biao's own words, their family is rich in academic masters.
Song Biao's grandfather was a social psychology expert who studied in Germany in the 1930s. He was said to be the only veteran scholar who had met Freud himself. His grandfather was a metallurgical engineering expert who studied in the Soviet Union and was also a veteran scholar. I remember back then.
The two old top students worked together in the bullpen and became close friends from then on. Later, they arranged blind dates for their children, and finally created the awkward child Song Biao.
Song Biao's father studied in West Germany in the 1980s to further study mechanical mechanics. After returning to China, he became the first generation of super academics in the field of finite element method of structural mechanics in China. Basically, in all the papers related to this field in their college, his father was not included.
Don’t even think about publishing it after signing it.
His mother is an expert in the field of modern Asian history and has been working in the Ministry of Foreign Affairs.
Song Biao, who grew up in such a family, was naturally very twisted. When he was a child, he was very weird and confused adults. When he was in the second grade of junior high school, he asked his father for the first time and the result was "ufo atmospheric flight dynamics theory and flight envelope"
"Guess", when he graduated from high school, his father's college recommended him to major in mechanical design. He felt that it was too twisted, so he went to join the army for no reason.
The family was more awkward than him at the time, but they never understood the child's mind, so they simply let him go. The worst he could do was finish his military service and then come back to college, but the result was even more awkward, and he actually applied to be a volunteer again.
The army really wanted him at that time, and the political commissar of the detachment specially planned to call his family to communicate with him and let his family understand national defense. However, when he saw the list of the top academic family, he finally didn't dare to call him.
Song Biao had a lot of awkwardnesses. He was very interested in the Japanese Thirty Rifle and the Mosin-Nagant rifle, so he dismantled the two rifles into parts and compared them with each other. He sat by the fire and thought about it.
A ruler was used to measure it, trying to figure out how low the recoil of thirty rifles would be.
The recoil of the Mosin-Nagant rifle is relatively low, even lower than that of Lee Enfield, and the caliber is about the same. The only explanation is that the front end of the bolt is locked, the return stroke is long, and the friction coefficient and stress generated by the more complex bolt parts are
The change also cushions recoil.
What about thirty rifles?
Obviously the caliber is smaller. He feels that the stress change of the bolt of the Thirty Rifle should be very small. Basically, the small caliber solves the recoil problem. Because the stress change is small, the coefficient value of the overall stress transformation of the firearm is also low, especially
The change in the bore and barrel during the shooting process is extremely low, thus ensuring higher shooting accuracy and a straight trajectory.
Just from the stress resistance change coefficient of the material, he personally feels that the barrel material of the Japanese Thirty Rifle may not be as good as the Mosin Nagant. It is hard to say whether the 38 cap has changed, at least at this stage.
If we think about the problem purely from the perspective of improving shooting accuracy, there is no need for Japan to reduce the caliber of rifle bullets to 6.5mm. The only explanation is that in the entire design, due to insufficient materials and processing accuracy, reducing the caliber reduces recoil and stress changes.
It is the only way to meet the design requirements.
In other words, Japan must adopt such a caliber design. It should be said that it is a very smart design. A small caliber change solves all the problems that Japan needs to face in industrial production.
It can be further deduced from this that if the caliber of the 30-38 rifle is to be increased to 7.62mm, various problems in industrial production must be solved first, because the bolt design of the 30-38 rifle is better and the parts
Less, the structure is simpler. Correspondingly, the greater the stress generated by the recoil force, the higher the material requirements, and the processing accuracy must be improved accordingly.
In terms of the industrial level of Japan in 1904, it would be tragic to increase the caliber of the Thirty Rifle to 7.62mm. Whether it could be mass-produced is a problem. The difficulty faced would probably be worse than that of the Lee-Enfield rifle.
, if mass production is carried out by reducing performance parameters, the final performance may not be better than the Mosin Nagant rifle, which is really awkward.
It turns out that there are awkward things everywhere in this world that cannot stand up to scrutiny at all. Why do you have to make your opponent think so smart?
Thinking about it on the other hand, don't the Japanese army want to solve the problem of low power of rifles? If they don't want to solve it, why do the Japanese soldiers take out the bullets and rub them when they are idle?
Song Biao reassembled the two rifles, sat by the fire and continued to ponder these awkward things. He pulled the bolts of the rifles and compared them, murmuring in his heart.
Modern manual rifles have reached their peak level during World War I, and the margin for improvement since then has been very low. Among this generation of classic rifles, the advantages of the Mosin-Nagant rifle are easy mass production, low cost, low rate of fire, and easy operation.
Rigid, reliable in performance, and accurate in shooting, the Lee-Enfield rifle has the highest rate of fire, convenient operation, and the highest cost and production difficulty. The Mauser rifle is relatively balanced in all aspects.
The Japanese 3030 and 380 rifles are quite different. Through a very special design, the number of parts and processing difficulty are reduced, making them suitable for Japan's current industrial level. They have straight ballistics, minimal recoil, and higher shooting accuracy.
Song Biao had already dismantled the bolts of thirty rifles and had a relatively comprehensive understanding. The bolts of the Mauser rifles had never been disassembled, but he could roughly remember the structural diagram of the Mauser bolts. This was his personal feeling.
The processing difficulty of the Japanese Type 30 and Type 38 rifles is lower than that of the Mauser rifles of the same period. There are actually two missing parts. These are all due to design advantages, while the processing difficulty of the Mosin-Nagant rifle is
It is the lowest among all classic rifles.
Processing difficulty and manufacturing accuracy are two concepts.
The machining accuracy of the Mosin-Nagant rifle is no lower than that of Mauser rifles and Lee-Enfield rifles. The difference is that the former's bolt design is cumbersome and has more parts. The design of individual parts is simpler. Most operators and lathes are
It can be produced, but the bolt parts of Lee-Enfield rifles and Mauser rifles are more complex and require more experienced machine tool operators, or more expensive special machine tools.
It can be seen that the current industrial level of Japan and Russia is just like this, especially Japan. Don’t think that Japan later built aircraft carriers and Yamato-class battleships, which means that its overall industrial level is very high. Think about it, Japan started from Meiji
After the Restoration, 30% of government fiscal expenditures have been used for military expenditures all year round. How much capital can it invest in the development of industrial technology?
Because Japan has maintained very high military expenditures in its sixty-year modern history, Japan’s military industry before World War II was also extremely developed, with a large number of designers, sophisticated operators, and large-scale production equipment.
However, the machine tool industry is completely at the third-rate level in the world. The vast majority of machine tools are imported from countries such as Germany, France, and Britain. During World War II, Japan could build first-rate aircraft carriers and battleships, but it could only manufacture third-rate machine tools. It is also true that first of all, in machine tools
The theoretical and industrial research fields of industry are thousands of miles apart. Secondly, in the three fields of motors, special machine tools and combined machine tools, the United States and the Soviet Union are thousands of miles away.
Machine tools, even traditional machine tools, look very simple, but the large number of mechanical calculations and analyzes contained in them are basically the domain of academics. At this time, if Japan wants to use its own machine tools to produce rifles, I am afraid that even millimeter-level
The accuracy cannot be maintained, and it is normal for the caliber of manufactured rifles to fluctuate between 6mm and 7mm.
The reason here is very simple. We can produce Intel chips by importing production lines from the United States, but can we build that production line? Come on, even the production lines for Pentium-class chips and microcontrollers are imported. These production lines are combinations.
We are basically unable to deal with the derivatives of machine tools and CNC machine tools in the second half of the 20th century. There are many theories that even Song Biao’s father, an old academic, cannot deal with. If Song Xueba is really allowed to study them, don’t expect to come up with one within ten years.
"Major achievements", unless the country and the dynasty gather all relevant academic leaders to work together to tackle the problem.
In the words of Song Xueba, just talking about the industrial field, the overall level of our machine tool industry is twenty years behind that of the United States, but in the theoretical field, we are at least fifty years behind. The former can still catch up, but the latter basically cannot catch up.
There is no hope within ten years, because no one in China is doing any preliminary theoretical research, and they are all copying the theoretical models of Americans and Germans more than ten years ago.
The development direction of the machine tool industry has always been to gradually reduce its dependence on people, so that ordinary workers can produce better products. This is the characteristic and direction of the industrial revolution, including the development of CNC machine tools. It does not mean that traditional machine tools
The machining accuracy is not as good as that of CNC machine tools, but the production efficiency and difficulty are completely different, even worlds apart.
During World War II, Japan was able to use traditional machine tools, special-purpose machine tools and skilled craftsmen to manufacture Yamato-class battleships, but the speed was simply a snail's pace, while the United States was manufacturing as fast as dumplings. The key here lies in the United States' understanding of combined machine tools.
and the large-scale application of special machine tools, as well as the United States’ extraordinary achievements in the field of machine tool theory.
The United States can make its own machine tools, but Japan cannot import them from the United States. The road to import from Germany, the United Kingdom, and France is also blocked. This is the tragedy of a rising industrial star.
Through the adjustment and expansion of the machine tool industry, the United States can not only destroy destroyers, aircraft carriers, and battleships on a large scale, but also improve it one level after another. As long as there is improvement in theory and design, the product line can be replaced immediately. In order to specialize
New products and new parts provide large-scale special machine tools, combined machine tools, and large-scale explosive production. However, Japan can only modify the ones before World War II. The original design and production framework have basically not changed, and they dare not
Once it changes, large-scale processing will be impossible, and once it changes, it will become a slow-speed production.
There is no doubt that the backwardness of the machine tool industry is one of the main reasons for Japan's defeat.
The large-scale and rapid development of Japan's machine tool industry and motor industry after the end of World War II was, on the one hand, taking advantage of the Cold War and the strong support and technology transfer from the United States, and on the other hand, it was Japan's pursuit of success after examining the reasons for its defeat in World War II.
As the son of a top academic, and as a guy who has pondered the UFO power system conjecture in junior high school, Song Biao knew very well that Japan’s industrial level during World War II was not very high, but it just looked scary. Of course, China’s industrial level during this period was even lower.
Very powerful.
Japan's industrial level during the Russo-Japanese War was right in front of Song Biao's eyes, which can be seen through the rifle in his hand.
Aren't all the barrels of the Type 31 field gun, the main force in the Russo-Japanese War, imported from Krupp? Even the gun mounts were imported from the French Schneider Company, and the Tokyo Artillery Factory was only responsible for assembly.
Japanese industry is not terrible at all.
Just like North Korea, Myanmar and others, when they see that China can make computer chips and the world's first-class supercomputer, they feel that China is very powerful. China can also build aircraft carriers, Shenzhou, and Beidou...
Looking at the problem from the perspective of the son of a top student, two words can represent all of Song Biao's feelings - Nima!
{Piaotian Literature www.piaotian.net thanks all book friends for their support, your support is our greatest motivation}