"Hmm...... As far as the relationship between the two of us is concerned, I won't go around in circles, and the patent budget given to me over there is 50,000 yuan, authorized for two years, and only used on a specific type of propeller blade. ”

Fang Zhen directly gave a fairly sincere figure.

It is impossible to ask for a very high price for a license like this, which has a very short term and a very limited scope and method.

Of course, if you find a lawyer who specializes in patents to fight the other side, it is estimated that it is not a big problem to raise a few thousand to ten thousand, but it does not seem to be necessary.

After all, there is still a relationship between Fang Zhen.

Moreover, in the 90s, the domestic intellectual property management highlighted a chaotic routine, which really forced the other party to directly infringe, and the cost of Chang Haonan's lawsuit here was also very high.

So that's good.

"The amount and the permit method are fine, but this high-altitude swept propeller, you want to generate electricity in the sky?"

Chang Haonan opened the file bag, which was basically full of legal documents, and did not involve too much technical content.

Due to the principle of propeller propulsion, even if the design efficiency is high, there will be insufficient thrust and lift at high altitude in thin air, so the propeller aircraft, unless a particularly exaggerated aspect ratio is adopted, whether it is a piston or a turboprop, the ceiling is basically about 10,000 meters.

Only a handful of cheaters like the paddle fan engine can push the boundaries further.

He remembered that in his previous life, he had the wild idea of carrying a wind turbine into the air with a floating balloon, using the strong tropospheric wind to generate electricity, and then transmitting it to the ground, so he asked.

It's just that this kind of thinking is of little value from the perspective of engineering practice, and if you really take on a similar project, then the best choice is to quickly pick up the bucket and run away.

"That's not it, the project I'm doing now is to work with a team engaged in meteorological research at Zhejiang University to design a high-altitude airship that can maintain a long-term existence in the stratosphere."

Seeing that Chang Haonan was interested in his project, Fang Zhen simply dragged a chair and sat next to the former:

"Because that thing may be two or three months when it goes up, and during this period, it also needs to move within a certain range to track the meteorological conditions, so it must have a certain amount of autonomous power."

Although the meteorology of Zhejiang Provincial University has declined a little in recent years, because the founder of modern geography and meteorology in China is their former president, the reputation is still there, and it should not be a fake project to trick people.

"Airship ......"

This unexpected noun made a certain string in Chang Haonan's mind be plucked:

"How tall?"

The day before yesterday, when a summary meeting was held in Donglai, some people proposed to build a communications relay to solve the problem of data transmission at a distance of 600 kilometers under the current situation of insufficient number of communication satellites.

When chatting with Luo Huichuan before, he also mentioned that the reason why the air force rarely flew to the depths of the South China Sea in recent years was that in addition to the limited range of the aircraft, another big factor was that it was difficult to get in touch with the base in Qiong Province after flying far away.

It shows that this demand still exists.

And not only military, in the face of some major natural disasters and other emergencies, such equipment can also provide emergency communication support.

It's just that the cost of building a few aircraft is too high and the effect is limited, so it can't take shape.

But now that I think about it, if I had abandoned the fixed-wing platform in favor of an airship, it seemed that the idea had suddenly opened up.

"They're going to study something called the stratospheric quasi-zero wind layer, which is about ...... From 22km to 28km, the east-west wind transitions around this range, and the north-south wind component is also very small, which can realize the regional residence or trajectory planning of the aircraft with a small energy and power cost. ”

"For example, the airship we are designing now, in the season with zero wind layer, the load capacity is about 16 to 25 times that of the season without zero wind layer."

Very exciting data.

Although it may be difficult to deploy a radar on it, it should be enough if it is only used as a communication relay.

"In other words, the appearance of this zero wind layer is seasonal?"

Chang Haonan raised his eyebrows.

If that's the case, it's a bit more complicated.

Engineers still prefer the phenomenon of stability.

"This is what they are going to study, at present, it can be determined that there is a stable zero wind layer from the end of May to the beginning of September in the area around 10 degrees north latitude near Qiong Province, and the average wind speed does not exceed 5m/s, this data is also the standard I used when I did the airship design, as for the more specific theoretical part, they told me something like El Niño-Southern Oscillation, but to be honest I don't understand it at all, if you are interested, I can give you the contact information over there."

"I have ......"

In fact, the first person Chang Haonan thought of just now was Lin Guofan, the two had cooperated quite well when they were making aircraft icing predictions, and the other party was also a meteorology expert, so they should know more than themselves.

But this project is something that has not yet been completed by the Zhejiang Provincial University, and it is almost taboo to dig up people's ancestral graves in the academic community to reveal the results that others are doing but have not yet been published, and it is very discrediting.

So he thought for a moment, and finally nodded:

"Okay, then senior brother, you can help me contact them, just say that there is a research on the application level that needs to be cooperated with them, and Jinghang University and the Electric Technology Group will participate."

Although he hasn't gotten in touch with the 14 institutes yet, Chang Haonan still firmly pulled the other party in.

Mainly in this year, the electric technology group is relatively wealthy, and their name will be more attractive.

"Why bother me to get in touch, you can just send them an email."

Fang Zhen pointed to a computer next to him.

It is the one that Chang Haonan calculated the wing flutter model on it before.

"The lab is networked?"

Chang Haonan blurted out, and then felt that this question seemed to be a bit similar to "how is the battle situation of Zhiyuan Star".

But there is no way, since he started participating in the 83 project last summer, he has not spent much time in school, and he can be said to know almost nothing about the situation in the laboratory.

"yes, at the beginning of the year."

Fang Zhen nodded, got up and turned on the computer next to him, as well as the cat hanging on the wall next to him, and the latter made a crunching dial tone:

"Not only laboratories, but also classrooms and libraries are connected, and it is said that the school plans to connect the dormitories to students by next year, but they will all charge by the hour."

The second half of the 90s was a period of extremely rapid development of the Internet in China.

On April 20, 1994, Huaxia officially connected to the Internet, but there was only one 64K international dedicated line in the country.

By 1995, only a few large cities in the country, such as Beijing, Shanghai and Pengcheng, had access to the Internet, but until the establishment of Yinghaiwei, there were still no ordinary users.

By 1997, almost all large and medium-sized cities had Internet connections.

He hasn't paid attention to it for more than half a year, and the changes are naturally earth-shaking.

Chang Haonan got up and sat down in front of the computer connected to the Internet.

In the 90s, it was still illegal to use a router to connect two or more computers to share the network, although many people did it secretly, but it was definitely not possible to do it with great fanfare in the laboratory, so the computers on other artificial bits could not access the Internet.

"Is it a domestic network or a foreign network?"

This is what Chang Haonan is most concerned about now, and he wants to engage in multi-physics simulation software in the future, and this research needs to refer to many foreign research results, and relying on paper journals alone is absolutely not promising.

If you can only go to the intranet, it doesn't make much sense.

In this era, there is a physical isolation between the inside and outside of the Internet, and it is not like later that you can casually turn over a VPN.

"What?"

Fang Zhen turned his head with a bit of dazedness on his face.

The most he usually uses on the computer is to send emails, and he doesn't care much about these things.

Chang Haonan had no choice but to rely on his memory to change the way he asked questions

"Uh...... The phone number we dial up to the Internet, is the first three digits 163 or 169? ”

163 is the Internet, and 169 is the domestic network.

"It's 163, the thief is expensive, I heard the teacher say 6 yuan an hour, I suggest you edit the email content first and then send it online."

Very good.

Chang Haonan secretly celebrated in his heart.

Finally, it can be a little bit modern.

(End of chapter)