Just as he was thinking about these things, Liu Wei happily came in. Liu Wei said happily: "Boss, I just received the latest fax from Bombardier. Smith and his party arrived at Huangping Airport tomorrow afternoon."

Hearing this, Li Tianfeng also looked happy and was in a good mood. Li Tianfeng said: "Mr. Liu, Smith and his party are very purposeful. They just want to order our turbofan 18 engine and prepare for reception. I personally invite Smith and others to have dinner tomorrow night."

Liu Wei said: "Well, boss, I will arrange all this. I will go to Huangping Airport to pick up people in person tomorrow afternoon."

After Liu Wei finished reporting, Li Tianfeng was about to calm down and drew another design sketch, about the combustion chamber part of the rq2000 gas turbine engine. As soon as he spread out the white paper and picked up the pencil, Li Tianfeng's phone rang.

When Li Tianfeng saw that it was Guo Tongde's call, he couldn't help but shake his head gently, smiled slightly, put down the pencil in his hand, and then joked: "Mayor Guo, what instructions do you have?"

Guo Tongde laughed and said, "Mr. Li, the instructions are not a question. I just heard that Bombardier will conduct a business inspection of your company. I wonder if it is true?"

Li Tianfeng said: "Mayor Guo, you are so well-informed. I am about to tell you about this matter. Mr. Smith, vice president of Bombardier, and his party arrived at Huangping Airport tomorrow afternoon. I have arranged the reception. If nothing unexpected happens, Smith will definitely order our engine."

Upon hearing this, Guo Tongde seemed to be three points happier than Li Tianfeng. Last time, COMAC's big moves forced the GDP of Songzhou City to a piece. This time, Bombardier is here again.

Guo Tongde said: "Mr. Li, this is a great joy. The purpose of my call is to congratulate you. If you sign a large order with Bombardier this time, it will be a blessing for our entire Songzhou."

Li Tianfeng smiled heartily. Obviously, he was looking forward to Bombardier's business inspection. Li Tianfeng said: "Mayor Guo. If you can really sign an order with Bombardier again, I will invite you to be the guest of our signing ceremony."

Guo Tongde said: "Mr. Li, then I will wait for your call. As long as you have a call, I will turn off all matters and be this guest."

Li Tianfeng laughed happily.

I chatted with Guo Tongde on the phone. After the call, Li Tianfeng seemed in a very good mood. After looking at the blank paper he had spread, he seemed very excited.

After adjusting his mood a little, Li Tianfeng began to enter the state while being in high spirits, and his mind was clear. He picked up the pencil and first drew a design sketch of the flame cylinder of the combustion chamber.

The combustion chamber part of the rq2000 engine has several key parts, such as the combustion chamber receiver, inner and outer flame cylinders, nozzles, etc., Li Tianfeng personally drew the design sketch and gave important dimensions and design parameters.

As for the design sketch of the combustion chamber receiver, Li Tianfeng has finished drawings. He has given to Sun Xiaoping and Qiu Wen'an, who will organize their own design teams to develop specific designs based on this design sketch.

The design of the combustion chamber receiver is relatively complicated, and the design of the inner and outer flame cylinders is not simple. The first thing Li Tianfeng drew was the outer flame cylinder.

There are many types of high-thermal load combustion chambers, and they are divided into many generations. The first generation of high-thermal load combustion chambers are widely used in various high thrust-to-weight ratio aircraft engines.

With the increase of the thrust-weight ratio, the inlet and outlet temperature of the combustion chamber increases, especially the sharp increase in the outlet temperature, and the gradual increase in the heat release rate, which also greatly improves the performance requirements of the combustion chamber, and further increases the weight limit of the combustion chamber, which also puts forward higher requirements for materials and cooling.

Countries have begun to study the second-generation high-thermal load combustion chambers. International giants of aero engines have begun to develop and verify the second-generation high-thermal load combustion chambers, and have begun to be used on their own core engines or the latest engines, such as the 119 engine in the United States.

The combustion chamber designed by Li Tianfeng for the rq2000 engine is undoubtedly the third generation of high-thermal load combustion chambers, which is one generation ahead of the current most advanced combustion. Such a combustion chamber not only further reduces the weight of the combustion chamber, but also significantly improves the performance of the combustion chamber, but also greatly extends the service life. The improvement in performance is mainly reflected in the full combustion of fuel and the significant increase in fuel utilization.

Of course, such combustion chamber design is extremely technical and puts forward extremely high requirements on materials and processes. The combustion materials must be made of relatively advanced ceramic matrix composite materials. Tianfeng Technology Company has mastered this material.

As for the manufacturing process, Li Tianfeng has a complete set of combustion chamber parts processing technology. Given that the materials, processes, etc. are mature and meet the design requirements of the third generation of high-thermal load combustion chambers, Li Tianfeng decided to verify it first on the rq2000 engine and first use such combustion chamber technology.

In Li Tianfeng's mind, this kind of design drawing of the combustion chamber seemed to appear. Li Tianfeng closed his eyes slightly, and after a moment of contemplation, he took the pencil and did not use a ruler to draw the design sketch of the outer flame cylinder.

Two hours later, the design sketch of the outer flame cylinder had been formed, and Li Tianfeng began to mark some important and key dimensions, as well as give design technical conditions, etc.

If you look closely at the design sketch of this external flame cylinder, it is obviously different from the existing combustion chamber flame cylinder. This is a typical floating wall annular flame cylinder.

After marking the size and technical conditions, Li Tianfeng looked at the flame tube with satisfaction. After looking at the time, he was ready to design the inner flame tube as he was now interested.

However, Li Tianfeng had to put down the pencil in his hand immediately. Sun Xiaoping and Qiu Wen'an knocked on the door and entered his office together. Sun Xiaoping was holding a few days ago. Li Tianfeng drew a design sketch of the combustion chamber receiver of the rq2000 engine.

Seeing the two of them, Li Tianfeng knew what was going on. He must have encountered problems when he unfolded the specific design of the combustion chamber receiver.

The design of the combustion chamber is very advanced and even requires a lot of brand new design theories. It is completely normal to encounter problems in the specific design process. Li Tianfeng was not unhappy at all. On the contrary, he showed enough patience.

Sun Xiaoping said with a sad face: "Boss, we are useless. When we unfold the specific design, there are many things we can't figure out and cannot continue to design."

Li Tianfeng smiled and said, "Don't worry, it's not your fault. It just so happened that I have completed the design sketch of the outer flame tube, so you can take a look."

In fact, the two had already seen this design sketch. When they saw Li Tianfeng say this, they immediately looked at it seriously. The more they looked, the deeper they frowned, and even looked at each other. Obviously, there were many things they couldn't understand and couldn't understand.

Seeing this, Li Tianfeng said: "Come on, sit down. It seems that I need to talk to you about the third generation of high-thermal load combustion chamber design technology."

Hearing this, the two sat down and listened carefully to Li Tianfeng's explanation.

Li Tianfeng said: "This kind of combustion chamber is the third generation of high-thermal load combustion chamber design, involving the design theory of high temperature rise and high heat capacity..."

Li Tianfeng explained very carefully, and the two listened very carefully, and even took notes seriously. After the lecture, Li Tianfeng said: "This kind of combustion chamber design technology can provide higher thermal efficiency under the same oil and gas level, that is, if the engine outputs the same power, such a combustion chamber will be more fuel-efficient."

Sun Xiaoping said: "Boss, after hearing what you said, we basically understand."

Li Tianfeng said: "During the design process, if you don't understand, you can ask me directly."

The two nodded, Qiu Wen'an said: "Boss, no wonder they are both gas turbine engines, with output of 2,000 horsepower, and the fuel consumption per 100 kilometers is only 280 liters, which is a significant decrease than the fuel consumption per 100 kilometers of similar gas turbine engines."

Li Tianfeng pointed out: "Go, follow my design sketch to develop the specific design. If you have time, call our design backbones together. I will teach you a class and tell you about this advanced combustion chamber design technology."

Sun Xiaoping said: "Boss, this is the best."

Qiu Wen'an also said: "Boss, everyone has long wanted to listen to your lecture."

Li Tianfeng smiled and said, "That's it. I'll give you a few lessons a month."

Seeing the two of them happily leaving their office together, Li Tianfeng said in his heart, maybe, often talking to you about advanced design technology of aircraft engines will be of great benefit to everyone's overall design level.

…………

Smith and his party arrived as promised.

Liu Wei took several subordinates, all of whom were black Mercedes-Benz sedans, and picked up Smith and his party at Huangping Airport, and arranged for Smith and others to stay at the Guobin Hotel in Songzhou.

In the evening, Li Tianfeng fulfilled his promise and personally invited Smith and others to have a meal, enjoying some Chinese delicacies. At this dinner, Li Tianfeng also accompanied Li Tianfeng, a group of senior executives from Tianfeng Technology Company.

This is Smith's second time to visit Songzhou and Tianfeng Technology Company. Everyone is quite familiar with each other and the atmosphere of the dinner is good.

Smith and his party rested for one night at the Guobin Hotel. The next day, everyone visited Tianfeng Technology Company for one day. On this day, Li Tianfeng politely accompanied him throughout the journey. Not only did he introduce Tianfeng Technology Company in more detail from all aspects, but he also took everyone to see the Qingshi Manufacturing Base.

After looking around, Smith and others clearly discovered the changes and progress of Tianfeng Technology Company compared with the last time. Smith seemed to be in a good mood and had a very high evaluation of Tianfeng Technology Company.

On the first day of reception, on the second day of inspection and visit at Tianfeng Technology Company. On the third day, the two sides sat in a business conference room at the Guobin Hotel and began substantial business negotiations.

Smith did not hide the purpose of his trip, but was commissioned by the board of directors to order the engine of Tianfeng Technology.

………

Today's third update, the first update is here! (To be continued)
Chapter completed!