"All cooperation is fine. Of course, our Ninth Hospital has to take the lead in some things. As for the subsequent achievements, it doesn't matter..." Liu Yijiu is easy to talk to now.

He did not refuse such a thing at all.

The only way is to take the dominance of technological development into the hands of the Ninth Hospital, so that the research progress of the project and the research funds will not be messed up.

"As for rockets, since it was improved by using Long March 3, in addition to the GTO geosynchronous transfer orbital carrying capacity increased to 2.65 tons, the flight capacity and star-arrow docking performance were improved. At the same time, when performing missions, the satellites were sent into low-inclination or supersynchronous transfer orbits, thereby improving service life... In other words, the new Long March 3A has a greater thrust, stronger carrying capacity, and faster flight speed..."

As for the Rockets, Qian Xuesen is personally responsible.

This system planning relationship is too great and has a very far-reaching impact.

Nothing can happen.

Before, there was a Long March 3 rocket, but its performance was not very good. It could only send about one and a half tons of load to orbit.

The satellites of the Beidou system have more functions. When the materials are not advanced enough, the manufacturing process is not very good, and even the foundation is not too strong, to achieve more powerful functions, satellites can obviously only be manufactured larger.

This puts forward higher requirements on the carrying capacity of the entire rocket.

"What about engines?" Liu Yijiu is most concerned about the engine. Although aerospace engines are not as high as aircraft engines, they also have a very critical position in the aerospace field.

Control systems, guide systems, etc., are not even as critical as engines.

"Engine is not a problem. Especially after the new high-temperature alloy and aluminum alloy, our engine performance has more than doubled compared to before. It is precisely because of this that our Long March 3 A appeared. The combustion efficiency is higher and the quality is more reliable..."

"What if this kind of engine is used in our intercontinental strategic missile?" This is the purpose of Liu Yijiu's question.

Rockets and missiles actually have similar principles.

The only difference is that the missile needs to return to the atmosphere after entering outer space to attack distant enemies.

"We need to wait for further data accumulation at present!" Qian Xuesen nodded and said to Liu Yijiu, "I know what you think, there is not much difference between missiles and rocket technology itself. However, if we want to realize Dongfeng 6 and Dongfeng 7, the current technical conditions are not enough. Unless we can make greater breakthroughs in material technology and design..."

The design range of Dongfeng 6 needs to reach about 14,000 kilometers, while Dongfeng 7 needs to reach 19,000 kilometers or even more!

The situation in China is different from the Soviet Union. The Soviet Union is in the northernmost direction and close to the North Pole. Their missile range is as long as 14,000 kilometers, which is enough for them to attack most parts of the world. Especially most of the areas in the world are in the northern hemisphere, and those countries in the southern hemisphere are not regarded as enemies by them at all!

Missiles were launched from the Soviet Union, and missiles could attack when flying in any direction through the North Pole.

China cannot do it. If it wants to attack anywhere in the world and allow missiles to fly over the Arctic, it will require a range of thousands of kilometers more than the Soviet Union.

Of course, China can also directly attack along the latitude or in a straight line.

No matter which mode you choose, the missile needs to have a longer range.

The range of 19,000 kilometers is a conclusion drawn by domestic experts after years of argumentation.

In the 1980s, this project was cut off, and then, after aerospace technology made many breakthroughs in the 21st century, China continued to invest in this project, and finally developed a super killer like Dongfeng 51, which can send express delivery to any location in the world!

In fact, the east wind with a range of 19,000 kilometers is really a waste.

The biggest enemy is only the United States and its allies, and even Europe is no longer on the same front as the United States at the end.

However, the purpose of Director Liu's play is not to scare anyone, but to the moon landing project.

As long as this missile is modified, it can become a civilian rocket with faster speed and stronger pushing capabilities. The speed of humans to the moon will be greatly increased.

Otherwise, such a money-burning project would have been abandoned long ago.

"No hurry to do this. We have time anyway!" Liu Yijiu said with a chuckle.

Then continue to listen to the introduction of the performance of Long March 3 A and some special designs.

Especially if you compare it with Long March 3, you will be able to understand more clearly.

"Compared with Long March 3, the improved A type has more flexible and advanced control technology, which can adjust the payload in a large posture before the star arrow is separated, and provide an adjustable satellite rotation rate, so it has strong adaptability..." Qian Xuesen introduced it very carefully.

Liu Yijiu also listened very seriously.

After all, the performance of this Long March 3 A rocket has even surpassed that of some aspects of the Long March 3 B.

The main improvement is the control system, because the more advanced chips provided by the Ninth Hospital.

"In addition to control technology, this overall is not much different from the improved design of the prototype. However, the third-level fuel has been improved, and more efficient liquid hydrogen and liquid oxygen..."

In terms of theme, there is still not much beyond that.

"There is no problem with this. More advanced models need to be improved in the future. Our Beidou system needs to send satellites to higher orbits." Liu Yijiu nodded. "No matter how good the design is, you have to wait until it is launched to know whether our design is not problematic. How to improve it, if it is more advanced..."

He doesn't need to say this, everyone knows it.

After the introduction was completed, Liu Yijiu stayed at the Ministry of Aerospace Industry for another night, preparing to go there with the aerospace people early the next morning.

When it comes to Beidou system, the military attaches great importance to it. After all, the United States and the Soviet Union have built satellite systems covering the world, and China is always under their noses. They can clearly understand any good things or troops.

Only by having your own satellite system can you have the power to counterattack.

"Dad Qian, how is the situation of the Type 31 we deliver the express? Our missile battleship is just waiting for this thing." After coming down, Liu Yijiu and Qian Xuesen suddenly asked him when they were together.

Originally, this matter was the most confidential thing, but Liu Yijiu had the right to know.

The military agreed to install this thing on the missile battleship.

"We have been moving forward continuously and steadily. If we want to conduct a test launch, there is still some work that needs to be completed. After all, large solid-fuel rocket engines are too different from small ones. Is it very slow to break through this technology? Of course, according to the current progress, high-ballistic test launches will be possible around May next year. Long March 3 A uses a lot of these missile technologies. If we launch this time successfully, it will prove that the technology of Dongfeng 31 is reliable..."

"Don't Long 3 Armor use liquid?" Liu Yijiu asked in confusion.

"Apart from the different propulsion fuels and engines, there is no problem in control technology. Otherwise, do you think the improved model can be completed so quickly? There is a biggest problem when passing by that. The research and development of the on-board systems of these missiles cannot keep up. It is very likely that when our missiles are completed, there will be no heavy-duty cars that can be carried..."

"..." Liu Yijiu's mouth twitched.

Anyway, they don't plan to get involved in this area.

The development of this heavy truck is very large in engineering and technically difficult, and it is also very difficult for them.

Mr. Qian's words immediately reminded him that during the military parade in the 1999 century, Dongfeng 41 itself was common, because the vehicle-mounted system was not mature and eventually gave up.

It can be said that the development work of Dongfeng 41 and Dongfeng 31 is not very different.

The two strategic missiles have different ranges and different accounting tasks.

"Don't you plan to intervene in this?" Qian Xuesen was a little surprised. Every time he had such a problem in the past, Liu Yijiu would take it over. He said this in the hope that Liu Yijiu could help solve these problems.

The funding for aerospace is too tight.

Liu Yijiu immediately shook his head, "It's not that I don't want to, but that we really can't add these projects. The personnel is a problem. Also, if we intervene, many units will eventually be demolished because they have no business. This is not a good thing. In recent years, because of the existence of the Ninth Hospital, many military factories have gone bankrupt or been completely restructured..."

Qian Xuesen was also silent.

In order to develop the economy in recent years, the country has insufficient domestic basic production capacity, so it can only reform the military system and put it on the market.

This benefit is obvious. After the military reform of the domestic basic industry, the production capacity and production quality have been greatly improved.

But it also caused another problem, that is, the lack of military production capacity.

Once a war breaks out, it will be a very dangerous thing.

"We can do train launches. The total length of Dongfeng 31 is only more than ten meters, while the total length of Dongfeng 41 is less than 17 meters. The train can be completely put down..." Liu Yijiu just doesn't want to do a load-carrier anyway. "Of course, road maneuvering is a must, and this aerospace supporting unit should work hard. We also have considerations in this regard for the 5 billion yuan fund this time."
Chapter completed!