The ups and downs of life in the Siheyuan

The phone was put in place the next morning.

I received a call from Representative Tong in the afternoon, telling me that the matter was basically resolved.

The principal temporarily stopped working and was considering transferring him in the future. The deputy section chief was directly fired from his official position, and the little fat boy transferred to another school.

In the past, no one paid any attention to them. The things they did would be revealed as soon as someone investigated.

In addition to eating and drinking, the guy in the department store also has lifestyle issues.

The principal had financial problems. Since there were not many of them, his superiors "considered" his efforts in education and transferred him from Huangchenggen Primary School.

Li Yuan still admired the old man very much. He did not talk nonsense and had a strong relationship with him.

In this case, there is no need for him to add insult to injury.

If the other party refuses to accept it and dares to seek death, then they will have no choice but to consider themselves unlucky.

Before dinner, the school's dean personally came to inform the children that classes would resume.

In addition to apologizing for the school, he also said a lot of nice things.

Li Yuan had a good chat with the dean and promised to arrive at school on time tomorrow.

After taking care of the housework, Li Yuan began to consider the drone plan.

The first UAV mainly considers the reconnaissance function, and then adds the strike function based on the reconnaissance function.

The ready-made engine is the turbofan 100 model.

The flight control system only needs to add an automatic flight module to the original one.

The reconnaissance module integrates conventional technologies such as imaging, optoelectronics, and radar.

The former can use the COMS lens he has developed in the past, and the military has relevant technical reserves for the latter two.

After comprehensive consideration, the communication module adopts broadband digital WIFI technology, and the communication distance is greater than 5 kilometers.

If relay drones are added, a larger range can be covered.

Li Yuan named this WIFI technology "Star Flash".

"Starlight" technology uses a one-way transmission method similar to the data transmission form of high-altitude television broadcast towers.

It receives periodic ground control information in one direction, then superimposes images and flight parameters and transmits them to the ground.

In order to better control the flight posture, you need to consider adding a gyroscope and a 3-axis acceleration sensor.

The gyroscopes currently used by the military are too large and take up space, which is detrimental to the appearance design of the drone.

Therefore, Li Yuan must design a small gyroscope and optimize the algorithm.

Thinking of so much work, he simply couldn't complete it by himself, so he could only try to refine the plan as much as possible and then offload some tasks to the military.

He mainly optimizes flight control algorithms and builds system architecture, and just goes to relevant task groups for guidance from time to time.

Once this task is completed, he will consider establishing a company.

He thought about trying to get the first private company license in the country.

Time passed day by day, and a week later, Li Yuan completed the design of the plan.

This "Red Arrow 1" drone named by Li Yuan looks like the Attack-21 of the 11st century.

It is a large stealth unmanned attack aircraft designed by China Northern Aircraft Design Institute.

It adopts a flying wing layout and a stealth low-flow-loss serpentine inlet. The aircraft is 12.2 meters long, 2.7 meters high, and has a wingspan of 14.4 meters.

It has a bomb load of up to 2 tons and a range of 4000 kilometers.

Due to the characteristics of the Attack-11, it may become a loyal wingman of the J-20 during operations.

When I saw this stealth drone, I was attracted by its appearance, and I have always remembered it.

Therefore, this design was taken out directly as a concept machine.

If you can trigger aircraft-related skill books during the research process, you will really make money.

A large number of aerodynamic designs that have been tested by aerodynamics will save much time and money for domestically produced high-performance aircraft.

In order to make the "Red Arrow 1" UAV approach the aerodynamic layout of the Attack-11, Li Yuan completed the modeling in his mind.

Then, based on the modeled data, "Nuwa 1" was arranged to perform aerodynamic curve calculations.

With her assistance, he believed that even without a wind tunnel, he could get infinitely close to the Attack-11's aerodynamic layout.

The information is divided into text information and design drawings.

Li Yuan did not remember to find the child representative, but took advantage of the weekend to take his family out for fun.

For the convenience of travel, Li Yuan called and representative Hetong borrowed a Kyoto 212.

Find a place with beautiful scenery near Shidu, where the family can grill fish and barbecue.

A good start to the year.

The next day, I received a phone call, and representative Tong quickly knocked on the door of the hospital.

"You guys seem to be impatient."

"Don't talk about me, Mr. Chu often asks about the progress."

"It's all here. You can take it back and take a look at it first. Consider what tasks you can take on. Then we will have a meeting to discuss it."

"Okay?" He said, he couldn't wait to take the file bag and opened it immediately.

I was immediately attracted by the appearance of the drone and said, “Oh my God, you are copying B2!

No, the same flying wing aerodynamic layout, yours is more concise."

He excitedly flipped through the drawings page by page, "Is this your stealth design?"

Li Yuan nodded.

"What kind of paint are you going to use?"

"ferrite".

The current stealth design is no secret, and all countries are studying it.

As mentioned in the previous document, China obtained a basically intact D70 unmanned reconnaissance aircraft in the early 21s.

It's coated with stealth paint.

These coatings are still very primitive, unlike in the 21st century, where later generations have begun to use inorganic nanomaterials and organic polymer composite materials.

Just like paint, when applied to the surface of an aircraft, it can absorb broadband waves.

It has good mechanical properties, low surface density, covers electromagnetic waves, microwaves and infrared, and can enhance corrosion protection, good weather resistance and many other benefits.

At present, it can only be made into a skin, similar to a plywood, which is fixed to the frame of the aircraft.

With China's current processing capabilities, Li Yuan chose a single radar stealth protection coating.

It is the well-known ferrite.

As an absorbing coating, it is cheap, has strong absorption capacity and is widely used.

When he heard that it was ferrite, Representative Tong curled his lips and said, "It's a bit classy! Why not use carbonyl iron absorbing paint?"

"Yes, as long as you can afford the equipment!" Li Yuan laughed.

"Uh! Forget it!"

Representative Tong was stunned when he thought about the difficulty and price of preparing this material.

But he immediately found a point to counterattack.

"Your design is quite bold, but it does not meet the aerodynamic layout requirements. I wonder if you have considered it."

"Why should I consider it? Isn't that what you are good at?"

my country established a national aerodynamics research institution in 1956.

The first wind tunnel was established at Beihang University in 1959.

"Uh! Okay, but I think your design will work!"

"I feel the same way," Li Yuan said with a smile.

Two days later, Li Yuan was taken to a research institute.

Participants included domestic aircraft design institutes, professors from Kyoto Institute of Technology and Beihang University, and some experts who did not know their organizations.

Li Yuan promoted the modular design concept of drones.

And the main modules are explained in detail.

Nearly 40 people discussed it for three days.

Finally, the "Red Arrow 1" project team was established.

The team leader is Mr. Chu, and there are as many as 5 deputy team leaders.

They are Li Yuan, Professor Liu Bo of Beihang University, Professor Lu Yanbing of Kyoto Institute of Technology, President Hou Jun of Southern Institute of Design, and Vice President Chen Huanjun of Northern Institute of Design.

Li Yuan is responsible for the flight control system, Beihang University's reconnaissance module, Kyoto Institute of Technology is responsible for the communication module, the South is responsible for the design and manufacturing of the airframe, and the North is responsible for the industrialization of the engine.

Although they are both deputy team leaders, Li Yuan was appointed by Mr. Chu as the deputy executive team leader of the project team, responsible for coordinating the research and development of each team.