Super military empire

Regarding Liu Yijiu's thoughts, other people are unable to complain.

How long has this happened?

Now, even launching a satellite system has countless difficulties. The astronauts have not yet sent to the sky, and they have begun planning to build a huge base on the moon and make the space very landing on Mars.

"Okay, let's talk about the follow-up plan later. Let's consider the current reality and the future development direction. Let's solve the technology first." Qian Lao sighed. Thinking about these things now, it would be Some are so lofty.

At present, the most important thing is to consider the present, and do the first step first.

It is impossible to send the manned spacecraft to the sky and then retrieve it back. Everything is in vain, and there is nothing to say about the latter.

"Indeed, things in the future may be twenty years, thirty years, or even fifty years. Our goal now is to think about the current situation, develop rapidly, and strive to be able to help us within ten years. Of astronauts sent to space!"

In ten years, this task is not very difficult.

"The problem of sending astronauts to the sky in ten years is not a big problem. After all, many of the technologies we need for the first step have been verified. What we need now is to integrate all the projects for the entire system..." Sun Jiadong said Historically, it was responsible for the Chinese lunar exploration project.

The person in charge of the first artificial satellite in China.

Liu Yijiu has not yet said who will be the chief engineer of this project, but he himself hopes to be able to do it.

"This is indeed the case. The personnel arrangement should be structured first, so that it can be more efficient. The personnel appointment should be done before then, and then the relevant personnel will be responsible for the coordination of various projects. Only in this way can be integrated. We can start the work more quickly... Comrade Xiao Liu, you had in-depth consideration before this, and you can talk about your views on the project leader." Qian Lao put this decision in the hands of Liu Yijiu .

The project is not a national project. Liu Yijiu's Ninth Institute provides money and technology, and aerospace mainly focuses on people.In this regard, it is the aerospace project group that benefits.

Only the managers who convinced Liu Yijiu will make them not doubt the project, and will not form constraints in future work.

Liu Yijiu saw that everyone put their eyes on him, and he also knew that the person in charge of the project was really important.

All the big guys in aerospace hope to be the chief engineer. Only in this way can their ideas become reality.

Qian Lao didn't have time to manage these things, and he was not very familiar with satellite and the very aspects of the design work of the universe, so Liu Yijiu had been considering candidates for a long time.

After thinking about it, I finally decided to let Sun Jiadong, the chief engineer of Chinese lunar exploration, complete his original job.

"I think it is more appropriate for Sun Jiadong and Sun Lao to take charge of this matter. From the design of the first domestic satellite to the present, he is responsible for many projects, even our Beidou satellite system, he has also participated in it. Inside..." Liu Yijiu's proposal was not opposed.

Sun Jiadong really did not expect that Liu Yijiu would propose him to be the chief engineer.

After all, the person in charge of the Beidou system is Chen Fangyun.

"Of course, this project and our Beidou project, although there are many similarities and many technologies are shared, but these two projects cannot be merged together. Old Chen still has to continue to be responsible for the Beidou satellite system... …"

Liu Yijiu naturally will not allow internal conflicts.

These two projects can actually be integrated into one project, and of course they can be treated as two independent projects.When the country has no clear goal to implement this plan, they need to seriously consider the focus of their investment.

"In addition, since we are going to develop in the direction of establishing a space station, in terms of launch vehicles, the carrying capacity of the Long March 3B rocket is obviously insufficient. It is best to design a GTO capable of more than five tons..." Since Liu Yijiu said to let himself be the chief engineer of this project, Sun Jiadong immediately put forward his own ideas.

There is no problem with the Long March 3B rocket to carry the Beidou satellite, but it is obviously not enough for manned space projects.

Only the greater the thrust, the more supplies can be transported.

If the return cabin is too small, just sending people to the sky, and even unable to move around, it doesn't make much sense.

"This is not necessary in the early stage. In the initial stage, to verify the technical and design feasibility, the Long March 3 can even meet the needs of use." Liu Yijiu shook his head, "We can't wait until we have such a rocket. Go experiment again."

Time is tight and tasks are heavy.

"Considering the various supporting equipment required for the return cabin, aside from the weight of the fairing, escape tower, etc., with the carrying capacity of the Long March 3B rocket, the weight of our return cabin will not exceed one ton..." Although one ton is a lot Now, regardless of the weight of the astronauts and their sanitary systems, the weight of the entire spacecraft must be reduced, which affects the design of the entire spacecraft.

"According to the current situation, the weight of the thermal insulation material will occupy a lot of weight. Otherwise, the life-saving system inside the return capsule cannot be guaranteed during launch. Under the action of gravity acceleration when returning , There will be problems when returning..."

Sun Jiadong had obviously considered this issue before.

The rocket thrust is too small, and the requirements for the return capsule are too high.

The various devices inside must be miniaturized and the power must be enhanced.

China does not have a heavy rocket with a thrust of thousands of tons like the Soviet Energy and the Saturn V of the United States, nor can it send hundreds of tons of payload to low Earth orbit or even higher orbits.

The existence of Saturn V is unknown. After all, the Americans boasted that the Saturn V was launched 13 times, six of which sent Apollo to the moon...

The Republic does not have too many aerospace projects, the number of satellites launched is also very small, and there are not many launch vehicles.

Not to mention sending larger payloads to space orbit.

"This really needs to be considered. But for now, we can only find a way to solve it on the basis of Long March 3B..." For this kind of thing, Qian Lao also believes that the rocket problem must be effectively solved.

"With the improvement of our Beidou satellites, the next generation of satellites will require greater thrust. In order to ensure communication quality and greater functions, the satellites will be designed to be larger, and it is very possible to launch the next generation of passive regions. When positioning satellites, the weight required may exceed the current Long March 3B payload..." Chen Fangyun said suddenly.

The greater the function of the satellite, the more systems are needed to guarantee it.

The more systems, the larger the size and the heavier weight.

As long as satellites continue to develop, the design of new rockets must continue.

In space, satellites and rockets are inseparable.

Unless there is a rocket with a larger load capacity, the carrying capacity is more powerful, or as in the United States and the Soviet Union, the rocket design is serialized and universal, and combined according to different tasks.

In fact, this is also a modular design.

"What if you add a set of boosters to the Long March 3?" Liu Yijiu was silent.

These are problems with rockets without large carrying capacity.

It is difficult to realize the design of Long March No. 5 at present, and there is not enough technology accumulation.Only on the basis of Long March 3B, boosters can be added.

This should be able to achieve the gto capability of the Long March 3B modification, and the payload can reach or even exceed 5,100 kg.

In this way, within a short period of time, the use requirements can be met.

"This is the preparatory work that we are currently studying." Old Qian nodded, but still hoped that Liu Yijiu could provide his ideas."As for how to add it, can you talk about it?"

Sometimes, many designs just need an idea to guide.

Liu Yijiu looked at Mr. Qian and was a little speechless. Why must this matter be done by himself!

But he didn't twitch it. After all, the improved version of Changsanyi is the basis for the serialization of domestic rockets.I immediately said, "In this regard, I personally think this way, using the current Long March 3B as the core stage and adding the booster of the Long March 2 bundled rocket to the first stage of the rocket. In this way, The reliability will be higher than the long two bundles...At the same time, the design of the fairing, etc. should be strengthened, so that the booster can be increased or reduced according to the task situation, which is to start the modular design... Otherwise, we might as well use the long Two bundles..."

The long two-bundle low-earth orbit carrying capacity is very strong, close to ten tons.

However, the current long two bundles are not suitable for the mission requirements of the Beidou satellite system and manned space projects.The only thing is because the design of the long second bundle is specially designed and manufactured for satellites!

"Moreover, we need to have the technical ability with one arrow and multiple stars!" Liu Yijiu gritted his teeth and said.

This made Qian Lao and others frowned.

Multiple satellites with one arrow are the same as the technology of multiple warheads in strategic missiles. At present, domestic research work in this area has not achieved much development.

"Military projects are not much different from civilian projects. If our plug-type engine and afterburning engine technology are broken, we can fully use our civilian rockets for technical verification. In this way, the experimental expenses can be completely reduced... …" Liu Yijiu said.

In Daba Mountain, Ren Xinmin and others have been continuing the plug-in engine and afterburning engine. This technology is being studied all over the world. Once a breakthrough is made, the performance of the rocket will break through a lot.