214: Not easy

"Advances in Aerospace Science and Technology" usually only accepts invited review articles, but for research with truly innovative value, they are also willing to make exceptions.

Professor Du’s consideration of authorship before was based on this consideration; after all, without the names of well-known scholars, the editors might not even give it a second glance.

Although Acta Aeronautica et Astronautica Sinica already had an English version, it was not yet indexed by SCI at that time, so its international influence was slightly insufficient.

However, for Xu Ning, who had accumulated rich experience and received systematic guidance, the specific platform for publishing the paper was not the most important.

"It doesn't matter, I believe the achievements of us China aviators are not only reflected in papers," Xu Ning said firmly. "My article is mainly to share and exchange with colleagues, and Acta Aeronautica et Astronautica Sinica is already enough."

In fact, in the engineering field, especially in top chinese journals like Acta Aeronautica et Astronautica Sinica, they are still followed by professionals in the industry.

If Xu Ning's research results were fundamental research in mathematics or physics, then he would definitely choose to publish in an SCI journal, because in these fields, chinese journals might rarely be consulted.

"Maintaining this mindset is very good, but valuable research results should not be buried," Professor Du Yishang said with a smile, very satisfied with the mature attitude of this young team member.

"If your research results cannot be made public even after declassification, then they must be submitted as classified national defense reports, and your academic contributions can be recognized through equivalent means afterwards."

In response, Xu Ning just smiled and nodded, saying nothing more. He was more concerned about the potential far-reaching impact of his research than the publication channel.

"Professor Du, I came to see you today about this matter..."

Saying that, Xu Ning handed Professor Du Yishang a floppy disk. The Old Professor quickly inserted the floppy disk into the computer and started to view it.

Despite his age, Professor Du Yishang maintained an open attitude towards new technologies, and his computer was equipped with the latest engineering software.

"This is a set of specially developed fan blades." At first glance, Professor Du Yishang thought these were new compressor blades independently developed by Xu Ning, but after careful observation, he found that this was not the case, at least the size didn't match.

"This is a new type of fan blade improved based on existing aerospace research and development concepts," Xu Ning explained.

"Oh? Is it a task from outside?" Professor Du Yishang turned his head and asked him.

"Nothing can escape your eyes!" Xu Ning gave a thumbs-up in praise.

"Stop praising, I know what you mean," Professor Du Yishang waved his hand. "I don't object to researchers earning remuneration through professional knowledge, which is also allowed and supported by policy.

But you must remember two points: first, you cannot neglect your main job; second, you must be wary of those who try to obtain technology through the temptation of profit."

"Is there anything I can help with?" Professor Du Yishang asked.

Xu Ning immediately responded: "I want to find a place to test my improved fan to see its efficiency and noise performance."

Professor Du Yishang nodded and thought for a moment before saying: "I can write you a note here. Our department has a fan test stand, together with the low-speed airfoil wind tunnel, you can use it after work."

Saying that, he took a stack of paper from the bookshelf, tore off a piece, and handed it to Xu Ning.

"But remember, you can only use it after everyone else has left work, don't disturb other people's work."

Xu Ning took the note and thanked Professor Du Yishang gratefully.

Just as he was about to leave, Professor Du Yishang called out to him again: "Oh, there's one more thing."

"If your fan is really well-improved, remember to apply for a patent first, and then make your research and development public. Someone didn't do this before and ended up suffering a loss."

In Beijing Aviation University, a university of science and engineering, there was a metal processing center that provided practical training for students and was also responsible for manufacturing components of various materials for research projects.

At that time, 3D printing technology did not yet exist, and making specific plastic parts was quite difficult.

Therefore, they decided to adopt an alternative solution: process the parts from metal and then cover them with a plastic layer.

Although this approach might make the finished product slightly heavier, thus increasing a little noise, it had little impact on Xu Ning's experiment.

After waiting for a day, he spent 180 yuan to get six special fans: one was the original version, another was the preliminary improved version, and the remaining four were versions made based on different bending angles.

The quality of these fans was very balanced, which was very important because it ensured that the fan would not affect performance or lifespan due to eccentricity when rotating at high speed.

As night fell, Xu Ning began his experiment. Although the country had not yet introduced unified industrial fan testing standards, the basic principles were similar, and he quickly became familiar with the operation of the testing equipment.

He carefully installed the first fan on the variable speed motor and connected the U-tube manometer to measure the static pressure, while preparing to use the pitot tube manometer to directly read the dynamic pressure value.

Having not touched these simple experimental instruments for many years, Xu Ning's movements seemed a bit rusty.

Just as he was struggling to change a throttle plate with a 20% flow area, with a "click," the laboratory door was suddenly pushed open.

"Who's there?" Two voices sounded almost simultaneously, one of which was Xu Ning, who was concentrating on his work, and the sudden sound made his heart tighten.

"Who are you? Why are you here?" Xu Ning asked vigilantly.

Standing at the door was a young man who looked gentle but was slightly nervous. He quickly clarified: "I am a student at this university, here for testing, approved by Professor Du Yishang."

Hearing Professor Du's name, Xu Ning immediately breathed a sigh of relief and showed his identity to this student: "Oh, I see. I am also guided by Professor Du and am currently doing my research and development."

At this time, Xu Ning finally installed the new throttle plate and presented the permission document signed by Professor Du as proof.

Taking the document, the other party frowned slightly: "Approved by Professor Du? But why haven't I heard about this?"

"Hello, I am Fang Zheng, a graduate student in Professor Du's team, currently in my third year of doctoral study." Although Fang Zheng was confused, after confirming the authenticity of the signature, his attitude became gentle.

"My name is Xu Ning. I just finalized joining our group to complete my thesis with Professor Du a few days ago," Xu Ning replied.

At this moment, he suddenly remembered meeting this senior brother in the cafeteria two days ago, when he was with another girl.

"Oh, it's you! When I saw you in the cafeteria that day, I thought it was just a regular student gathering," Fang Zheng said with sudden realization.

Although he was surprised by the arrival of the new member, since he had received Professor Du's approval, he also expressed his welcome.

Professor Du rarely supervised undergraduate graduation research, so when Fang Zheng learned that Xu Ning would be their new member, he was a bit surprised.

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