When Zhuang Qianding heard this answer, he nodded and continued to ask: "Have you ever studied ballistics?"
"Having learned some knowledge about end-point ballistics, but never studied it systematically, during the students' trip to study in the United States, they included ballistics in their study plan and conducted systematic and comprehensive study." Yu Hua answered seriously.
Ballistics belongs to the branch of applied mechanics. It is a comprehensive subject involving multiple academic fields. It is the theoretical basis of all firearms and artillery. Later generations will divide it into three major fields: internal ballistics, external ballistics, and terminal ballistics. , specializes in studying the movement patterns and related phenomena of projectiles and projectiles.
Maybe a little complicated, but not important.
To sum it up in one sentence, how to improve killing efficiency from a scientific perspective.
At present, the development of ballistics is in the mid-term rising stage. The internal division is basically the same as that of later generations. It is divided into internal ballistics, intermediate ballistics and terminal ballistics. Among them, intermediate ballistics gradually evolved into external ballistics with the rise of computer technology and measurement technology. study.
This is one of the cutting-edge subjects in the field of scientific research. Because its research field is closely related to the development of military weapons, it is highly valued by various countries. Basically, ballistics experts are given whatever they want. A laboratory with an investment of millions of dollars is said to be built. Built without any discounts.
The main purpose of the research and development of mankind's first electronic computer, which has a research and development expenditure of up to 480,000 US dollars, is to conduct ballistic calculations and ballistics research.
The reason for attaching so much importance to the development of ballistics is simple, because the research level of ballistics determines the level of military weapons. For the same 7.62 mm caliber rifle, one uses pointed bullets and the other uses rounded bullets, both in terms of accuracy and lethality. There is a huge gap.
Pointed bullets are one of the products of ballistics research, and the famous fin-stabilized discarding sabots, depleted uranium armor-piercing bullets, high-explosive incendiary bombs, etc., all came from the results of ballistics research.
"The First Cause of All Realms"
"It's very valuable to know the term terminal ballistics. China has basically not established a ballistics system. Yu Hua, are you interested in starting a 75mm artillery project?" Zhuang Qianding became more and more happy when he heard this. He didn't expect Yu Hua to really understand. After passing ballistics, the matter about body armor was no longer important. Taking advantage of this opportunity, he suddenly came up with a bold idea.
Get Yu Hua to study a 75mm artillery!
Note, this is research, not imitation.
As for why Yu Hua should be recruited specifically, the reason is very simple. Yu Hua's mathematical calculation ability can greatly improve research efficiency.
"Build a 75mm artillery?" Yu Hua was a little surprised when he heard this idea. I have to say that for China in this era, developing a 75mm artillery is a big project.
"Yes, you are responsible for the calculations, and I am responsible for the theoretical design. We will strive to develop a 75mm artillery within half a year." Zhuang Qianding nodded solemnly, speaking decisively and seriously.
Zhuang Qianding's academic level and knowledge reserve are at the top level. He systematically studied ballistics while studying in the United States, and there are no theoretical limitations in his work on 75mm artillery research and development.
The only thing missing is that one person is too slow.
Yuhua’s strength lies in efficient computing, which greatly improves research and development efficiency.
"Professor, this project is fine in theory, but students do not recommend it." Yu Hua looked serious, and after some thought, he said bluntly.
"Why?" Zhuang Qianding was not angry, he nodded and asked.
"Professor, firstly, we don't have the materials and the material conditions to produce high-strength gun steel. Secondly, students think that the power of the 75mm caliber artillery is weak. It is better to increase the caliber to 105mm. My idea is to develop a combat weapon A 105mm howitzer with a total weight of 1.8 tons and a 360° circumferential shooting capability. The barrel length is 23 times the caliber. The maximum range is 14 kilometers. It adopts a towed transportation method." Yu Hua looked serious, thought about it, and took this opportunity to ask Zhuang The professor proposed the originally planned 105mm howitzer plan.
The main performance parameters of the 105mm light howitzer are: a total combat weight of 2.5 tons, a revolutionary 360° circumferential firing range, a barrel length of 23 times the diameter, a maximum range of 14 kilometers, and an effective killing radius of about 20 meters using conventional grenades. .
This 105mm lightweight howitzer has three major advantages: firepower, range, and range.
Needless to say, in terms of firepower, 105mm grenades and 75mm grenades are completely at two levels. On the anti-Japanese battlefield that lacks high-power weapons, the 105mm howitzer has the nature of a strategic weapon.
The range advantage is reflected in the maximum range of 14 kilometers. Compared with the 105mm at the same time, it has a crushing range advantage. The participating parties in the anti-Japanese battlefield have not yet had a 105mm with a range of 14 kilometers.
Of course, cannons and those with a caliber exceeding 105 are not included in the comparison standards.
Finally, there is the advantage of firing range. A big limitation of traditional artillery is that the directional firing range is very low, generally only 5° to the left and right. Currently, all artillery equipped by the armies of various countries do not have the ability to fire 360° in a circumferential direction, and this This 105mm howitzer adopts a revolutionary base design and has a 360° circumferential firing range.
The importance of circular shooting is self-evident, which means that the artillery can directly cover a circle instead of the previous sector, greatly improving the strategic deterrence capability and attack range.
From the timeline of artillery development, the world's first 105mm howitzer with 360° circumferential fire was born around the end of World War II. The model was the M1950 105mm howitzer developed by the French. This was a 360-degree artillery gun. The originator of.
In addition, the weight of the entire artillery is also very low. The total combat weight of 1.8 tons seems very heavy, but compared with the 105mm howitzer of the same period, it is more than hundreds of kilograms lighter.
What the weight reduction brings is increased mobility.
"A 105mm 23x caliber howitzer capable of 360-degree circular shooting? Yu Hua, you guys are more radical and bold than me. Let's not talk about whether it can be developed. You tell me that it can be used in 105mm 23x caliber gun steel. Where do you get the materials?" Zhuang Qianding was stunned for a moment when he heard the 105mm artillery plan given by Yu Hua. He reacted quickly and lost his breath.
I think the 75mm caliber is too small.
Good guy, he is indeed a young man, he is very aggressive, he opens his mouth and directly launches the 105 millisecond howitzer, and the barrel length is 23 times the diameter.
What is the concept of 23 times diameter?
The barrel length reaches 2.415 meters!
According to Zhuang Qianding's understanding, there is currently no 105mm howitzer in China that has a diameter of 23 times. The only one that exceeds this is the SFH18 32-times diameter 150mm howitzer. These howitzers are installed in the 10th Artillery Regiment of the National Revolutionary Army. Manufacturer For Lyinmetal.
The tube length is 23 times the diameter, let alone design issues and processing issues, the most basic and important material issue, how to solve it?
If the gun steel for the 75mm artillery can still be solved by importing, then the gun steel material for this 23-diameter 105mm artillery can't even be purchased.
The former is expensive, and the latter is simply expensive but not marketable.
"That's why I came to see you today, professor. The students are here to deal with gun steel materials." Yu Hua took a deep breath and said seriously.
Upon hearing this, Zhuang Qianding frowned and said solemnly: "How do you solve the problem of gun steel materials?"
"Autonomous smelting!"
Yu Hua stared at Zhuang Qianding without hesitation, and slowly revealed his thoughts and the oxygen top-blown converter technology he was developing: "Imports alone cannot solve the problem. Not only is this kind of gun steel material expensive, but it is also It is extremely easy to be choked by others. Once the supply is cut off at a critical moment, we have no choice. We must be self-sufficient and achieve independent production to truly solve the problem. Students have recently been studying a new steelmaking technology. Once this technology Putting it into use will not only solve the current shortage of steel, but also solve the supply problem of crude steel for high-strength gun steel. I call it oxygen top-blown converter technology."
