The rise of nanometers

When Snail Industrial products were launched and Time Blog launched cloud inspection and strict selection.

Huang Xiuyuan and his party had already arrived in Chang'an, Qin Province. He did not interfere with the affairs of the symposium and left it to Jiang Hailin and Huang Guotong.

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

This time when he came to Chang'an, what happened at the symposium was just incidental. The real thing was that the solid fuel he participated in finally came up with a safe formula.

The 41 Research Institute of the Sixth Academy of Aerospace Science and Industry, which specializes in solid rocket engines, has its headquarters in Chang'an.

The successful development of nitrogen-20 passivated fuel made the Aerospace Science and Industry and Aerospace Science and Technology impatient. They immediately modified several old solid rocket engines and prepared to take them to the rocket engine test site to test their performance.

After explaining some things to Jiang Hailin and others, Huang Xiuyuan was escorted deep into the Qinling Mountains by a special car.

The rocket engine test site is located deep in the Qinling Mountains. It took the escort team almost thirty hours to reach a valley.

Among the people who came to participate in the test, it was not just Huang Xiuyuan, Li Feng and others, but also senior officials from various institutes of the Aerospace Science and Industry, many of whom had gray hair.

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

"Mr. Huang, I have long admired your name." An old academician from the first hospital greeted him with a smile.

Huang Xiuyuan didn't put too much pressure on him. He smiled and stretched out his hand: "Academician Zhang is so polite. It should be because I have admired his name for a long time."

Zhang Peicai, who was already in his seventies, looked at the young man in front of him and secretly sighed that time was not forgiving, and at the same time he felt very relieved.

He took Huang Xiuyuan to introduce the six academicians and four top executives of the Aerospace Port present, and the two parties got to know each other initially.

Perhaps because they knew about Huang Xiuyuan's achievements and his relationship with his superiors, everyone was more enthusiastic and did not despise him because of his age.

After all, the academicians and the management of the aerospace industry are not fools. If they cannot see this clearly, then all these years will have been in vain.

With Huang Xiuyuan's achievements and his current age, he is very likely to become an academician of the two academies before he is thirty years old.

It is basically unprecedented for someone under the age of thirty to become an academician.

As long as Huang Xiuyuan does not have an accident midway, he will be able to work hard in academia for at least forty more years. Forty years of vicissitudes also represent the rise of a towering tree.

Among the academicians present, the youngest are over fifty. Their era is ending, but Huang Xiuyuan is like the rising sun. No one knows the future, but age is definitely Huang Xiuyuan's advantage.

Not taking the opportunity to form a good relationship, but instead showing off, is something only a fool can do.

Huang Xiuyuan also communicated with a group of academicians, and everyone was looking forward to this fixed hair test.

"If the fuel performance meets expectations, we may be able to try a single-stage orbit." One of the academicians raised his glasses and said.

Zhang Peicai reviewed the design performance of Institute 41: "In the laboratory, the specific fuel ratio of the new fuel reached around 861, and it is estimated that the actual measurement will not be too far behind."

"With this specific impulse and energy density, let alone a single-stage orbit, even a single-stage moon landing is possible."

"Haha, Lao Wang must be dreaming! The launch vehicle for landing on the moon must not use a single-stage engine, otherwise the gain outweighs the loss."

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

The discussion lasted for half a day.

The rocket engine of Institute 41 has 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 grain shape and installed in the rocket engine in advance, and does not require refueling.

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

In the control room, the staff conducted a final inspection on the test platform.

"Does this launch vehicle look familiar?" Huang Xiuyuan laughed.

Zhang Peicai explained in a low voice: "I brought him here from the military library. Anyway, my service life is coming soon, so I might as well use my remaining energy."

"Is it the full drug column? Or a reduced dose?"

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

At this moment, a broadcast sounded in the control room: "Attention all units, the test is about to begin, please enter the safe area."

"Attention all units, the test is about to begin, please..."

"All units please..."

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

On the big screen, the countdown began to beat. When the number reached zero, the nozzle of the rocket engine on the engine test platform trembled slightly.

The flame at the nozzle is very light, only slightly reddish. This is because nitrogen 20 is a product of deflagration and is difficult to express flame color.

As for the passivating agents calcium carbonate and sodium chloride, calcium carbonate will decompose into quicklime (CaO) and carbon dioxide (CO2) at high temperatures, while sodium chloride will not decompose.

In the flame color reaction, calcium usually shows a brick red flame, and sodium salt shows a yellow flame, so the nozzle flame shows a light red color.

On the instrument panel in the control room, various engine indicators are constantly fed back here from the test platform.

All the academicians and researchers held their breath, looking at the data and estimating the various properties of the fuel.

"The thrust performance is good, in line with expectations." Li Feng said with excitement.

No one is surprised by the thrust performance of Nitrogen 20. This is the advantage of Gufa, and they focus on specific impulse.

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

As soon as he finished speaking, some data anomalies appeared in the feedback data from the test platform.

"The spout shows signs of softening."

"As expected."

This situation is expected, because the high temperature and high pressure caused by the decomposition of nitrogen 20 is a test for the engine combustion chamber. Coupled with the high specific impulse, it means that the same quality of fuel can burn nitrogen 20 for a longer period of time.

Although the rocket engine itself is designed to withstand high temperature and high pressure, the problem is that the previous design was designed to deal with old-fashioned solid fuel.

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

In simulation calculations, the specific impulse of nitrogen 20 is as high as 861, which is about three times that of old solid fuel. This means that under the same thrust, the burning time of nitrogen 20 fuel is about three times that of old solid fuel.

Rocket engines equipped with old-fashioned solid fuel designs seem a bit acclimatized when faced with nitrogen-20 fuel.

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

Since there is no brake design in this fixed hair design, Yang Han can only bite the bullet and test it.

Fortunately, there was no danger in the end. Although the entire nozzle was beyond recognition, the fuel was also consumed.

Li Feng clenched his fists: "The competition is 858, which is almost the same as the simulated competition."

"It seems absolutely impossible to use full medicine unless the engine is upgraded."

Zhang Peicai just shook his head: "Aerospace engines do need to be upgraded and modified to match the new fuel. However, for ammunition engines, we can reduce the amount of fuel and slowly improve it."

Others also expressed their opinions. Overall, this test was very successful. The improved fuel type nitrogen 20 has the basis for preliminary application.