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Huang Xiuyuan and his group had already arrived at Qin Gaoguan'an. He did not interfere in the matters of the symposium and handed it over to Jiang Hailin, Huang Guotong and others.

Today is the 16th, and the symposium is held on the 20th.

This time I came to Chang'an, the symposium was just a by-pass. The real thing was the solid fuel he participated in, and it was important to come up with a safe formula.

The 41 Research Institute of the Sixth Academy of Aerospace Science and Technology, which specializes in solid rocket engines, is headquartered in Chang'an.

The successful development of nitrogen 20 passivation fuel has made Aerospace Science and Technology and Aerospace Technology unable to wait and immediately transformed several old solid rocket engines, preparing to pull them to the rocket engine test site to test their performance.

After explaining some things to Jiang Hailin and others, Huang Xiuyuan was escorted to the depths of Taihang Mountain by a special car.

The test site of the rocket engine was in the depths of the Taihang Mountains. It took nearly thirty hours to escort the convoy before reaching a valley.

Among the people who came to participate in the test, not only Huang Xiuyuan, Li Feng and others, but also the bigwigs of various academies of Aerospace Science and Technology, many of them had gray hair.

When Huang Xiuyuan came here, he seemed out of place because he was too young and was only 22 years old this year.

"Mr. Huang, I have long been famous." An old academician from the First Academy greeted him with a smile.

Huang Xiuyuan was not too proud, and he smiled and stretched out his hand: "Academician Zhang is so polite. It should be because I have long admired the name of my name."

Zhang Peicai, who is already in his seventies, looked at the young man in front of him and sighed in his heart that time was unforgiving, and at the same time he felt relieved.

He took Huang Xiuyuan to introduce the six academicians and four senior officials of the aerospace port, and the two sides had a preliminary understanding.

Perhaps it was because they knew Huang Xiuyuan's achievements and their relationship with the above, and everyone was also very enthusiastic and did not despise him because of his age.

After all, the academicians and the management of the Aerospace Office are not fools. If you can't see this clearly, you will have been in vain for these years.

With Huang Xiuyuan's achievements and current age, it is very likely that he will become an academician of the two academies before he is thirty.

Being an academician under the age of thirty is basically unprecedented.

As long as Huang Xiuyuan doesn't have an accident in the middle, he can at least fight in the academic community for forty years. Forty years of change of life also represents the rise of a towering tree.

The youngest academicians on the scene are over fifty years old, and their era is coming to an end, while Huang Xiuyuan is like the rising sun. No one knows the future, but age is definitely Huang Xiuyuan's advantage.

Instead of taking the opportunity to make a good relationship, you will give me a look of face. That is something that only stupid people can do.

Huang Xiuyuan also communicated with the academicians, and everyone was looking forward to this solid hair test.

"If the fuel performance meets expectations, you may try a single-stage entry into the rail." One of the academicians raised their glasses and said.

Zhang Peicai looked through the design performance of the 41st Institute: "In the laboratory, the ratio of the new fuel to around 861 is estimated to be far behind the actual measurement."

"This specific impact and energy density, let alone a single-level entry into orbit, is possible even if it is a single-level moon landing."

"Haha, Lao Wang is dreaming! The launch vehicle that lands on the moon must not use a single-stage engine, otherwise it will be more than worth the effort."

"I just hope that in my lifetime, I can see manned landing on the moon, so that I will die without regrets."

After a long discussion and exchange.

The rocket engines of the Institute 41 have been installed on the rocket engine test platform.

Unlike the fuel tank of a liquid engine, the fuel of a solid engine is compressed into a medicinal column and installed in a rocket engine in advance without adding fuel.

Yang Han, the person in charge of the testing ground, informed everyone that the test was about to begin.

In the control room, the staff conducted the last inspection of the test platform.

"This launch vehicle looks a little familiar?" Huang Xiuyuan laughed.

Zhang Peicai explained in a low voice: "The military kura came from, and his service life is almost over, so I'd better use my remaining energy."

"Is it a total medicine column? Or a reduction?"

"Two shots of total medicine, two shots of half medicine."

At this moment, a broadcast rang in the control room: "Please note that the test is about to begin, please enter the safe area."

"Please note that the test is about to begin, please..."

"Please..."

Yang Han, the person in charge, picked up the walkie-talkie: "Start."

On the big screen, the countdown began to jump. When the number returned to zero, the rocket engine's nozzle trembled slightly on the engine test platform.

The flame at the nozzle is very light, with only a slight red color. This is because the product of nitrogen 20 explosion is difficult to show the flame color of nitrogen.

As a passivator, calcium carbonate, sodium chloride and calcium carbonate will decompose into quicklime (CaO) and carbon dioxide (CO2) at high temperatures, while sodium chloride will not decompose.

In flame color reaction, calcium usually appears as brick red flame, while sodium salt appears as yellow flame, so the nozzle flame appears as light red.

On the dashboard in the control room, the engine's indicators are constantly feedback from the test drive platform to this point.

A group of academicians and researchers held their breath, looked at the data, and estimated the performance of the fuel.

"The thrust performance is good, in line with the expected estimate." Li Feng said a little excitedly.

Everyone was not surprised by the thrust performance of nitrogen 20. This was originally the advantage of cofactory, and they paid attention to the impact.

Time passed minute by minute, and the engine was still spitting out light red flames, but Huang Xiuyuan suddenly frowned: "The temperature is too high, and the engine can't hold on."

As soon as the words were finished, some data abnormalities appeared on the feedback data of the test drive platform.

“There are signs of softening the nozzle.”

"Sure enough."

This situation is expected, because the high temperature and high pressure of nitrogen 20 decomposition is a test for the combustion chamber of the engine. With high specific impulse, it means that the nitrogen 20 can be burned for longer with the same quality of fuel.

Although the rocket engine itself has a design that is resistant to high temperature and high pressure, the problem is that the previous design is to deal with old solid fuels.

Generally, the specific impulse of old-fashioned solid fuels is generally around 260-265, and a small part can reach around 280-300.

In simulation calculation, the nitrogen 20 has a higher ratio of 861, which is about 3 times that of old solid fuel, which means that under the same thrust, the combustion time of nitrogen 20 fuel is about 3 times that of old solid fuel.

The rocket engine with old-fashioned solid fuel design seems a bit unacceptable when facing nitrogen 20 fuel.

Sure enough, after 32% of the running time exceeded the original design, the engine nozzle not only softened, but even showed signs of melting.

Since there is no brake design in this solid hair design, Yang Han could only test it with his teeth.

Fortunately, it was in the end without any danger. Although the entire nozzle was beyond recognition, the fuel was also exhausted.

Li Feng clenched his fists: "The 858th rating is similar to the simulation rating."

"It seems that the whole medicine must not be used unless the engine is upgraded."

But Zhang Peicai shook his head: "The engines used for aerospace really need to be upgraded and modified to allow the engine to be equipped with new fuel. However, for the engines for ammunition, you can use reducing medicines and then slowly improve them."
Chapter completed!