v2 Chapter 456： New developments, mixed results

The genius remembers the address of this site in a second: [Aibilou]https://The fastest update! No ads!

The next day, Mu Yang returned to the company.

The chip design software EDA has been made, and the chip can be designed. The Xinghai Group's first chip was named "Xingchen 01", and Mu Yang decided on it in March.

He has never designed a chip before, and the first chip he got his hands on was the world's top chip.

Even if it is open and hung, without experience, the design is very difficult.

Normally, it takes at least 24 to 36 months for a chip to go from design to mass production. If there is a problem in the intermediate process, the time will be even longer. After tape-out, it will take 1 to 2 years for customer testing and adaptation. And after purchasing in small batches, it is possible to achieve leapfrog growth.

Like Warwick, the technology is mature and the time is short, so the design cycle of a chip is shorter.

But like Mu Yang, who directly copy the homework, and uses the output of the human brain converter for durability, the speed of light drawing is several times faster than that of conventional drawing.

Chip design can be divided into two parts, chip front-end design and chip back-end design.

Front-end design is the process from input requirements to output netlist: it is mainly divided into the following five steps:

1. RTL design (that is, choose TSMC or SMIC, as well as chip technology, Star 01 uses 7n technology)

2. Verification;

3. Static timing analysis;

4. Coverage;

5. ASIC logic synthesis.

The back-end design, that is, the process from inputting the netlist to outputting the GDSII file: it is mainly divided into the following six steps:

1. Logic synthesis; 2. Formal verification; 3. Physical implementation (layout planning, wiring);

4. Clock tree synthesis—CTS; 5. Parasitic parameter extraction; 6. Physical layout verification.

Mu Yang has decided on the architecture and started RTL design. For this part, he used the C language.

【in()

{printf "HelloXH-Stars" "Stars 01"......】

It is completely copied, except for some name changes.

If the speed of copying is 150 words per minute, or 500 letters, then, using the human brain converter, the input speed can reach more than 2500 letters per minute.

Chip design is a long process. After the chip design is completed, you can proceed to the next step:

Wafer + mask

Mu Yang estimated that it would take a month to complete the chip design of Xingchen 01, even if it was launched.

However, he is not in a hurry, take his time.

At present, the prototype of the EBL lithography machine has not yet come out. time flies,

a month later,

Mu Yang finally finished the chip design of Xingchen 01, and the time has come to June

early.

In fact, it was faster than he imagined. He spent five hours a day on chip design, and in the rest of the time, he also directed the chip design department.

In addition to Xingchen 01, the chip design department also needs to design relatively simple chips. I gave myself two or three days off to stay at home with my children.

The super yacht he entrusted the company to order has been finalized, costing nearly 200 million yuan, and will not be delivered until one year later.

June 6,

Sitting in the office, Mu Yang began to plan the next stage of work.

The progress of the EBL lithography machine is relatively slow, Mu Yang's key work has been completed, and he is not needed for the time being;

The design of the first chip has also been completed, and Mu Yang doesn't want to play with the second chip for the time being.

Xingchen 01 is a chip used in high-end mobile phones. After the lithography machine comes out, Mu Yang plans to design a top-notch chip for computers and use it in servers.

If you have experience in designing the first chip, and then copy the second chip, the efficiency will be much faster.

In general, the lithography machine and chip design can come to an end first, and he can officially start working on aero engines.

In fact, the company's aviation engine

The machine project started last year, but it is not going very smoothly.

At present, there are two types of aircraft engines, one is the air-breathing type, and the other is the rocket jet type.

In the final analysis, the former is aviation, and the latter is aerospace, which are completely different.

The air-breathing type, as the name suggests, is to inhale oxygen from a high altitude to carry out combustion, that is, oxidation reaction.

Without oxygen, combustion cannot take place.

In space, oxygen is thin, and rocket jets have their own liquid oxygen.

Of course, there are only two types of aircraft at present, maybe Mu Yang invented a flight engine that does not require combustion, such as sufficient battery energy or controllable nuclear fusion technology.

For now, it's still a long way off.

Aeroengines are currently divided into three types: piston engines, gas turbine engines, and ramjet engines.

Piston engine is an aero engine used in airplanes or helicopters in the early days to drive propellers or rotors. It is still used and has not been eliminated. Low-power piston aero engines are still widely used in light aircraft, helicopters and ultra-light Airplanes are just no longer used in civil aviation.

Gas turbine engines include turbojets, turbofans, turboprops, and turboshafts, all having a compressor, a combustor, and a gas turbine.

Turboprop engines are mainly used for aircraft with a speed of less than 800 kilometers per hour; turboshaft engines are mainly used as power for helicopters;

Turbofan engines are mainly used in higher speed aircraft; turbojet engines are mainly used in supersonic aircraft.

Civilian airliners are dominated by turbofan engines, which have the advantages of large thrust, high propulsion efficiency, low noise, low fuel consumption rate, and long range, so they are widely used in civil aviation airliners.

The C919 also uses a turbofan engine, which is what Mu Yang plans to study.

In the afternoon, Mu Yang suddenly received a call from Academician Wu Hui, the chief designer and deputy general manager of Shanghai Aircraft Corporation.

"Mr. Mu, hello."

"Academician Wu, hello, I haven't seen you for a long time, how are you doing recently?"

"The body is old, and it's pretty good. At my age, it's normal to have some problems. I called you this time because the C919 has completed the major assembly and debugging at the beginning of the year. In March, the whole machine The static test was successful, and it passed the review for the first flight in May. The first flight is planned the day after tomorrow. If you have time, you can come and visit.”

On the other end of the phone, Mu Yang could feel Academician Wu's excitement.

Mu Yang could not have imagined that the C919 launch review progressed so fast, nearly three years faster than in history.

"Congratulations, congratulations, congratulations." He thought about it for a while, and felt that it was meaningless to watch: "I don't have time here. I have recently entered a scientific research juncture, so I can't go to the scene to watch the first flight."

"Without the help of Xinghai Group and Mr. Mu, the progress would definitely not be so fast. Using the metal 3D additive equipment of Xinghai Group, it took at least half a year faster. At the same time, Mr. Mu came to Shangfei to guide the work and solved many key problems. I I really don’t know how to thank Mr. Mu.” Academician Wu Hui sincerely thanked him.

"Academician Wu, you are welcome. I also hope that the domestically produced large plane will take to the sky soon."

"Yes, we have been waiting for decades for a large civil aviation aircraft, haha." Academician Wu Hui said happily, but at the same time he felt a little regretful, "Hey, it's just that Mr. Mu couldn't be there to witness the first flight. I feel a little regretful.

However, the key to scientific research is understanding.

Mr. Mu, I will not bother you. Come to Shangfei when you are free. You are always welcome to guide the work. "

"Okay, there will be a chance."

Mu Yang understood Academician Wu's feelings, maybe it was the dream of their generation, or even three generations.

However, what they didn't expect was that even if the C919 was successfully tested and obtained the airworthiness certificate, they would not have imagined that Ugly Country dug a big hole for them and prevented CFM International from selling LEAP-1C engines to Shangfei Company.

Mu Yang reminded academician Wu Hui that he also knew that there was a hidden danger

, I just don’t know that a few years later, the progress will not be so fast, and Ugly Country will be so decisive.

Now, the matter has come to this point, and the reminder is useless.

Mu Yang entered the C919 project relatively late, and he alone could not make them give up the LEAP-1C engine, and Shanghai Aircraft Company did not have any good choices.

Being able to borrow someone else's engine to go to the sky is also a great improvement.

If you wait for your own engine to be developed before test flight, UU Read I don't know when it will be.

Therefore, it is not wrong for SAIC to choose the LEAP-1C engine.

It’s just that the domestic media has exalted SAIC, and the employees of SAAC have been praised too highly.

Hey, if it were him, he would probably be elated.

"It's good to be hit, but the gap may be too big, and most scientific researchers can't accept it, and they will be discouraged for a long time. Dog R's ugly country, this trick is absolutely amazing."

Mu Yang refused to participate in the maiden flight. He knew that with his high popularity, the media at the scene would definitely seize this point to promote it. Otherwise, the whole network would be full of C919 news.

A few days later, the first flight of the C919 went smoothly.

Sure enough, many big shots were present, and the C919 made its first flight successfully, making it a hot news that day.

When Mu Yang saw the media reports, he felt mixed feelings.