Chapter 1405: Long March 5

From the weapons cemetery, I found a black duck electronic reconnaissance plane. After swapping it, it smashed it and handed it to the Xiong Guoren, who disassembled the transport plane and took it away.
From the weapon data cemetery, find the design data of GPS satellites and give them to Lao Sun and others, so that they can copy the actual objects and data, so that the progress will be faster. Qin Guan’s goal is to use the GPS system of Ying Guoren When building the network, the Beidou system of its own side must also be networked, at least to cover the area of ​​Han, and gradually expand to the world.
If GPS takes the lead and expands to the world, it will not be easy for one's own Beidou system to be promoted. This will be the situation for later generations. It is strongly promoted with the support of the state. For example, all trucks must be equipped with the Beidou system. and many more.
Only when the amount of use is large and the R&D cost comes down, the cost will be lower and lower, otherwise it will go into an endless loop, and the project will eventually die.
"Head #1 has agreed to the space plan." Major Yang said to Qin Guan next to Qin Guan. At this time, the two were walking on the road to the Sixth Hospital of the Seventh Ministry of Machinery Industry.
Before setting off, this was the last thing Qin Guan had to do.
"For the navigation plan you proposed, the superior believes that the risks are within the controllable range and the benefits are high. The military, in particular, is fully supportive and believes that this project is of great significance. Many people have reservations about the human space program."
Qin nodded his point of view. This project must be disputed in China. The veterans of the aerospace industry are definitely welcome. However, those experts who hope that the country will develop its economy as soon as possible think that this project will lead to huge waste of funds. Can't get on the horse.
"Finally, Chief One gave instructions to go step by step." Major Yang said.
Step directly over, if the steps are too big, it's easy to get involved, and if you go step by step, it's much easier.
Now, Major Yang brought Qin Guan here, mainly busy with this matter.
The Sixth Academy of Aerospace is the liquid rocket engine research and development center of Han State. It is the only professional research institute in Han State that integrates the research, design, production, and test of the main power system of the carrier rocket, the orbit control power system and the space vehicle propulsion system. Known as the "national team" of aerospace liquid power and "the hometown of aerospace power of Han State".
The research institute is headquartered in Ho Kyung, and now the two came to the branch in the capital.
When it comes to this, someone in front of you has already greeted him: "Mr. Qin, welcome to come and inspect our work. We look forward to your visit."
"Old Ren?" Qin looked at the person in front of him. This person is not the person in charge here. He is the leader of a superior department. He was also present at the meeting that day, but he didn't speak much. Guan knows that he is one of the four famous aerospace elders in Han, and his position in the aerospace industry is second only to Qian Lao.
Ren Lao was born in 1915 and graduated from university in 1940. After that, he went to Eagle Country for further study. He successively obtained a master's degree in mechanical engineering and a doctorate in engineering mechanics. Although he was not majoring in aerospace technology, he cross-specialized and turned to aerospace under the needs of the motherland. The system soon became an expert in space technology and liquid rocket engine technology.
In 1980, he was elected as a member of the Han Guo Academy of Sciences, who later became an academician.
Now, he is over sixty years old, with gray hair, but still working on the front line.
"Lao Ren, it's nice to meet you, you are the veteran of our aerospace industry." Qin Guan said.
"The waves behind the Yangtze River push the waves forward." Ren Lao said: "Qin Guan, the progress of our aerospace industry depends on you young people. I know everything about the old Sun. Now they are full of energy. "
"Yes, Mr. Ren, I will do my best," Qin Guan said.
After greeted the experts behind, everyone came to the conference room, and Ren Lao took Qin Guan and sat on the rostrum. A more important meeting began.

If we want to build a high-thrust rocket, we must first build a high-thrust engine. We have no shortcuts to aerospace engines. We have to take one step at a time.
Ren Lao said:
Now, we are working on Long March 3. The hydrogen-oxygen engine above is a big problem."
Qin Guan knows this history. The Long March 2 uses highly polluting nitrous oxide and unsymmetrical dimethyl hydrazine as propellants. When studying the Long March 3, he planned to add another level to it. At this level, Ren Lao insisted on using the most suitable hydrogen-oxygen engine.
In terms of efficiency, the hydrogen-oxygen engine is the most efficient, but it is also difficult. Han Guo experienced setbacks in its research and development. In 1978, the hydrogen-oxygen engine was tested for the first time, and 10 people were injured due to illegal operations.
The failure caused the hydrogen-oxygen engine to be almost dismantled, but he was the old man and continued to research and develop. Under his insistence, this advanced engine must be used. Later, it still encountered a failure. In 1984, Dongfanghong 2 only entered In the small elliptical orbit, the synchronous orbit was not reached because the secondary ignition of the hydrogen-oxygen engine failed.
It is very difficult to develop a new engine. Now, Qin Guan said that it is a huge step to build a large-thrust liquid oxygen kerosene engine.
As the veteran of space rocket engines, Mr. Ren personally attended this important meeting.
Unlike other scientific research projects, aerospace engines, in many cases, do not have any experience and models to learn from. They can only experiment again and again to master the complex fluid laws. This new type of engine has no contact with itself. Before, it was easy to fail.
"Now, our most mature one is the Long March II. Its first stage is the DaFY6-2 engine, which is the largest thrust model available. This engine is composed of four liquid engines with a thrust of 75 tons in parallel. In other words, we have only 75-ton thrust at hand." Mr. Ren continued: "The space station you proposed, President Qin, requires a large engine with a thrust of 400 tons, which is difficult to achieve at our current level. Therefore, we want to make a simpler plan first, which is a liquid oxygen kerosene engine with a thrust of 120 tons. And on this basis, we will form our new launch vehicle. We will take our existing maximum 6 tons near the ground The carrying capacity has been increased to the 20-ton level."
After he finished speaking, Mr. Ren smiled at Qin Guan: "We might be laughed at by President Qin. Satellites are being released everywhere. Only our units that actually release satellites dare not release satellites."
Qin Guan shook his head: "No, Mr. Ren, your plan is more suitable and safer. I agree with your proposition. Our Long March-5, is it a project?"