my scientific age

Chapter 258 A 360mm howitzer with a 105° circumferential firing range!
Hearing this answer, Zhuang Qianding nodded and continued to ask, "Have you studied ballistics?"

"I have learned some knowledge of terminal ballistics, but I have not studied it systematically. When students travel to the United States to study abroad, they will incorporate ballistics into their study plans and conduct systematic and comprehensive learning." Yu Hua replied seriously.

Ballistics belongs to the branch of applied mechanics, which is a comprehensive subject involving multiple academic fields, the theoretical basis of all firearms and artillery. , specializing in the study of projectile and projectile motion laws and related phenomena.

Maybe a little complicated, but not important.

One sentence summary is how to improve the efficiency of killing from a scientific point of view.

At present, the development of ballistics is in a rising stage in the mid-term, and the internal division is basically not surprising with the later generations. It is divided into internal ballistics, intermediate ballistics and terminal ballistics. With the rise of computer technology and measurement technology, intermediate ballistics has gradually evolved into external ballistics study.

This is one of the cutting-edge disciplines 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 can give whatever they want, and a laboratory with an investment of millions of dollars can be built. Build, without the slightest discount.

The main purpose of the research and development of the first electronic computer of mankind with a research and development budget of up to 48 US dollars is to conduct ballistic calculations and ballistics research.

The reason for attaching so much importance to the development of ballistics is very simple, because the research level of ballistics determines the level of military weapons. It is also a 7.62mm caliber rifle, one uses pointed bullets and the other uses round bullets, both in terms of accuracy and lethality. There is a huge gap.

The pointed bullet is one of the products of ballistics research, and the famous tail-stabilized shelling armor-piercing bullets, depleted uranium armor-piercing bullets, high-explosive incendiary bombs, etc., all come from the research results of ballistics.

"Knowing the term terminal ballistics is already very valuable. China has basically not established a ballistics system. Yu Hua, are you interested in a 75mm artillery project?" After ballistics, things about body armor are no longer important. Taking advantage of this opportunity, he suddenly came up with a bold idea.

Pull Yu Hua to study a 75mm artillery!

Note that this is research, not imitation.

As for why Yu Hua was specially recruited, the reason is very simple. Yu Hua's mathematical calculation ability can greatly improve the research efficiency.

"Making 75mm artillery?" Yu Hua was a little surprised when he heard this idea. He had to say that for China in this era, developing a 75mm artillery can be regarded as a big project.

"Yes, you are responsible for the calculation, I am responsible for the theoretical design, and strive to develop a 75mm artillery within half a year." Zhuang Qianding nodded solemnly, his words were decisive and serious.

Zhuang Qianding's academic level and knowledge reserve are at the top level. During his study in the United States, he systematically studied ballistics, and there is no theoretical limitation in the research and development of 75mm artillery.

The only thing missing is that one's efficiency is too slow.

Yu Hua's strength lies in efficient computing, which greatly improves the efficiency of research and development.

"Professor, there is no problem with this project in theory, but students do not recommend it." Yu Hua said bluntly after thinking with a serious face.

"Why?" Zhuang Qianding was not angry, nodded and asked.

"Professor, firstly, we don't have the materials and the material conditions to produce high-strength gun steel. Second, the students think that the 75mm caliber artillery is too weak, so it's better to increase the caliber to 105mm. My idea is to develop a combat gun. The 1.8-ton 360mm howitzer with 105° circumferential shooting capability, the barrel length is 23 times the caliber, and the maximum range is 14 kilometers. The professor proposed the originally planned 105mm howitzer.

The main performance parameters of the 105mm light howitzer are: a total combat weight of 2.5 tons, a revolutionary 360° circumferential firing field, 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 light howitzer has three major advantages, firepower, range, and range.

Needless to say in terms of firepower, 105mm grenades and 75mm grenades are completely two levels. In the anti-Japanese battlefield lacking powerful 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 105 grenade of the same period, it has the range advantage of rolling. The two sides in the anti-Japanese battlefield have not yet had a 14 grenade with a range of 105 kilometers.

Of course, cannons and those with a caliber over 105 are not included in the comparison standard.

Finally, there is the advantage of the firing range. The traditional artillery has a big limitation in that the directional firing range is very low, which is generally 5° left and right. All the artillery equipped by the current armies of various countries do not have the 360° circumferential firing range capability, and this The 105mm howitzer features a revolutionary base design with a 360° circumferential firing field.

The importance of circular firing is self-evident, which means that the artillery can directly cover a circle instead of the previous sector, which greatly improves the strategic deterrence capability and attack range.

In terms of the time line of artillery development, the world's first 360mm howitzer with a 105° circumferential firing range was born around the end of World War II. The model is the M1950 105mm howitzer developed by the French, which is a 360° firing range artillery. the originator.

In addition, the weight of the entire gun is also very low. The 1.8-ton combat weight seems to be very heavy, but compared with the 105mm howitzer of the same period, it is more than several hundred kilograms lighter.

The reduction in weight comes with increased mobility.

"A 360mm 105x caliber howitzer with 23-degree circumferential shooting capability? Yu Hua, you are more aggressive and bolder than me, let's not talk about whether it can be developed, tell me that it can be applied to 105mm 23x diameter gun steel. How did you get the materials?" Zhuang Qianding was stunned when he heard the 105mm artillery plan given by Yu Hua, and was a little sluggish, but the whole person quickly reacted, and he didn't have a good air.

The co-authorship situation is that the 75mm caliber is too small.

Good guy, he is indeed a young man, he is very aggressive, he opens his mouth and shoots a 105 millisecond howitzer, and the length of the barrel 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 23mm howitzer with a diameter of 105 times in China. The only one that surpasses it is the SFH18 type 32 times diameter 150mm howitzer. This batch of howitzers are installed in the Tenth Artillery Regiment of the National Revolutionary Army. for Rheinmetall.

23 times the diameter of the barrel length, not to mention design problems and processing problems, how to solve the most basic and important material problems?

If the gun steel of the 75mm artillery can also be solved by importing, then the gun steel material of this 23 times diameter 105mm artillery can't be bought.

The former is expensive, the latter is directly priceless.

"That's why I came to you today, Professor, the students are here to solve the cannon steel materials." Yu Hua took a deep breath and said rightly.

When Zhuang Qianding heard this, his brows were wrinkled and his face was solemn: "How to solve the gun steel material? How do you solve it?"

"Self-smelting!"

Yu Hua stared at Zhuang Qianding, and without hesitation, slowly revealed his thoughts and the oxygen top-blown converter technology that was being developed: "Import alone can't solve the problem, this kind of gun steel is expensive, not to mention expensive. It is extremely easy to be caught in the neck by others. Once the supply is cut off at the critical moment, we have no choice. We must be self-sufficient and realize independent production to truly solve the problem. Recently, students have been researching a new type of steel-making technology. Putting it into use can not only solve the current dilemma of lack of steel, but also solve the crude steel supply problem of high-strength gun steel, which I call oxygen top-blown converter technology."

(End of this chapter)