"However, to increase the number of engines, it is necessary to increase fuel propellant and rocket engines, and in addition, to ensure accuracy, it is necessary to add stabilizers...... Since the length of the shell is limited by stability, the additional rocket engine cannot be long, and the fuel cannot be ...... The effect of range extension will be affected, and the cost will be much higher......"

Seeing that the head of the unit was interested, Liu Yue also gave a detailed introduction.

The use of rocket range extension measures occupies the volume in the projectile, and the warhead space is reduced accordingly, so that the power of the shell is reduced.

The density of firing with such shells, again, is lower than that of ordinary shells.

However, if it is used for local precision strikes, it is only weaker than ordinary artillery shells, and it cannot achieve precision strikes of rockets and missiles.

Artillery shells, after all, need to be realized by saturation strikes.

"What are the advantages of low-concave extended-range shells?" Li Longyun's originally excited expression gradually solidified after Liu Yue explained the cost and principle.

Although it is an artillery shell, it can add a rocket engine and fuel, and it is also a rocket, which is not as effective as a special rocket.

As a member of the army, Li Longyun naturally hoped that Liu Yue would say a plan that could reduce costs and increase power.

Liu Yue looked at Zheng Jianguo and the others.

Zheng Jianguo and the others still looked bad.

No matter how much the shells of these cannons are changed, they are not very accurate, the range is not far, and the power is not strong enough, so they cannot effectively teach the enemy to behave, and it is not only the face of a rocket artillery production unit like the 2186 factory, but the entire base is gone.

even lost Liu Yue's face as a graduate student.

Liu Yue is the first batch of graduate students after the resumption of the college entrance examination in China!

"Liu Yue, what's the situation with the concave range extender bomb? Long Zhenhua saw that Liu Yue was silent, and opened his mouth with a cigarette.

In the eyes of the people in the troops, the reason why Liu Yue first proposed a rocket range extender with a complex design and structure was that he knew that it was not practical.

Even if the range is doubled and the power is reduced, what is the effect?

Shells, range and power, preferably all increase.

If the power is not strong enough, no matter how far the range is, it is useless.

Liu Yue sighed again, and after looking at the expressions of Zheng Jianguo and others, he explained: "Chief, the principle is the same, the concave bullet also needs to add a small structure, and when the projectile tail is manufactured, a concave cavity is created to increase the air pressure at the tail during the projectile flight, reduce air resistance, and improve the power and stability of the projectile flight, so as to increase the range and improve the accuracy." Of course, the shape of the shell also needs to be studied in terms of fluid mechanics to reduce the drag ...... during flight."

When Liu Yue spoke, he kept looking at the expressions of the leaders around him and pondering their reactions.

"Adding a cavity in the tail is to solve the pressure differential resistance during the flight of the projectile, so that the bottom can be jetted to the tail ......"

Liu Yue saw that everyone was frowning, obviously not understanding what he was trying to express.

I pondered it myself, went to the blackboard in front, drew a simple diagram of the shell, pointed to the picture, and told everyone in the simplest way: "Chief, because of the addition of the tail design, the airflow generated by the shell along the surface to the tail during the flight enters the cavity, and the device added to the tail uses the airflow to jet backwards to generate new pushing energy, so as to increase the bottom air pressure, reduce the resistance of the air to the projectile pressure difference, and increase the thrust to achieve the purpose of extending the range." ”

Liu Yue pointed to Jian Tu and said this, and everyone understood.

It is the same principle as rocket range extension, except that it does not need to be loaded with propellant and does not need to use a rocket engine.

The artillery warhead should only be affected by the addition of a few additional devices, and the impact will not be significant.

"Are you sure it works?"

Li Longyun asked Liu Yue seriously.

If this is the case, the cost will not increase much, and all the heavy artillery will be effectively increased.

It is much more effective than rocket artillery and missiles.

"Chief, this is what I discovered during the flight of the rocket, and other units should have made these discoveries...... This kind of achievement is not very effective in terms of rocket range accuracy, etc., and if it is used in artillery units, the effect is ......"

Liu Yue didn't say what the effect was, and everyone understood.

The concave extended-range projectile has a simple structure and can also have high accuracy, only a simple add-on device needs to be added to increase the range of the shell, so that the shell can fly longer and have a longer range!

The internal space will not be squeezed too much, the warhead will not be weakened too much, and the power will be guaranteed.

"If you study and produce results, how much money will be needed, and how long?" Zhao Xingbang asked Liu Yue directly after hearing this.

It is more practical to talk about something real.

If the required R&D funds are not much, Liu Yue will be directly asked to preside over the research work, and with the results, they will be provided to many military factories for the production of ammunition in China, and the extension of artillery firepower can increase the scope of a lot.

As for worrying that Liu Yue is too young to be able to handle it?

can be admitted to graduate school and study with a group of big masters for almost ten years, Liu Yue really has no ability, can't he go to his teachers?

"Chief, this technology is not complicated, especially for us who are studying rockets and missiles. The cost of the whole study is about 500,000 yuan, and there is no guarantee of time now, and samples should be produced in about a month...... As for test launches, the costs incurred by test launches at various shooting ranges in different environments may increase ......"

Liu Yue originally wanted to say that it would take half a year.

In the end, it still didn't.

I'm a graduate student, so I came up with a few small designs, no problem.

What's more, all of this has already been said, it was discovered in the process of studying rockets, and it only needs to be tested.

"Hurry up the time, and if you have a sample, you will find the Military Representative Office to arrange a test launch!" This project will be entrusted to you, and a plan will be drawn up immediately, and I will sign it, and the funds will be dis......bursed soon." Zhao Xingbang directly clapped his hands and decided.

Li Longyun also supports this plan.

As long as the range of the new shell is ideal, and the design of the cannon is improved, the firing range is doubled, and then it is good.

"Chief, we have a lot of projects here, and there are also 273mm multiple rocket launcher projects......" Zheng Jianguo couldn't help but jump out against it.

That's a joke!

Factory 2186 is engaged in rocket artillery, how can it not be a serious business to study artillery shells?

"Rocket artillery is also a development of artillery, and artillery is still equipped. As a leader, we must change our mode of thinking, and we should not think that rocket artillery is more powerful and have a higher level of technology and that rocket artillery is more advanced than artillery...... Whether it is cost or effect, heavy artillery is the main firepower of the troops......"

Zhao Xingbang knew the thoughts of Zheng Jianguo and the others, and warned Zheng Jianguo seriously.

This kind of ideological consciousness is unacceptable.

Li Yunlong also kept a straight face: "Except for the Second Artillery Corps, all rocket artillery in China is no different from artillery equipment such as cannons and howitzers. As for the Second Artillery, it is also artillery, although it uses something with a range of thousands of kilometers......"

In any case, rocket artillery belongs to artillery, and no one can deny this.

Rockets are also the extended-range design of artillery shells.

If the cannon can reach the range of rockets, rocket artillery is not needed at all.

The rocket artillery is really powerful, the range is really long, but it needs fuel during the flight, which leads to a lot of weight reduction in the warhead and high cost.

"Chief, during this time, Factory 2186 does have more projects, and research and development is also busy, or Comrade Liu Yue will put forward a preliminary plan for this project first, and hand it over to the ammunition research unit ......" Lin Qiyang also spoke.

Lin Qiyang didn't want to turn 002, a base that can produce rocket artillery to Dadongfeng, and launch vehicles into an artillery shell research unit when he was in charge.

For the first time, Lin Qiyang felt that Liu Yue was so difficult.

When Liu Yue was brought back, it was not for Liu Yue to engage in rocket artillery.

Liu Yue is now not only going further and further in the research of rocket artillery, but also beginning to degenerate in the direction of artillery research......

How can it work?

Even Jiang Zhihe, Du Feng and others felt that their heads were incomparably big.

I want Liu Yue not to be allowed to study these, but there is no way.