Looking at the long list of folders, Liu Yiming was a little surprised. He returned to the previous level and checked the overall size of the folder. It was more than ten G.
"Tianfeng, did you do all this?"
Zhou Yan smiled bitterly: "I would like to copy..."
"this……"
"Teacher, the design files are all on the mobile hard drive. I have to go home after the holiday. You can take a look at it yourself..."
After saying that, Zhou Yan closed the folder, ejected the hardware, unplugged the hard drive, picked up the laptop, and quickly slipped out of the faculty apartment.
Unfortunately, before Zhou Yan could escape from Shanhaiguan, he was caught up by a phone call from his instructor.
"Tianfeng, how did you do it?"
Liu Yiming's tone was full of disbelief.
You must know that Zhou Yan is a "half-way monk" and has only attended the course for half a year. Apart from "genius", Liu Yiming can't find any other words to describe Zhou Yan's talent.
"Teacher, isn't there a term for thick accumulation and thin hair? I have been waiting for this day for too long!"
"Okay, let's talk about it after we get back from winter vacation!"
That's true, but during the winter vacation, Liu Yiming always called Zhou Yan from time to time to communicate with him to confirm certain things.
After a phone conversation, Liu Yiming felt relieved about his winter vacation, but Zhou Yan's winter vacation was basically spent with question marks.
On the eighth day of the Lunar New Year, Zhou Yan didn't even think about extending his vacation. He packed his luggage and returned to school.
However, as soon as Zhou Yan arrived at the school gate, he was stopped by Liu Yiming's driver: "Professor Liu asked me to come and pick you up..."
Then, before Zhou Yan had time to enter the dormitory, he had to fly to Chang'an with his instructor Liu Yiming.
Before I could express my feelings about revisiting my hometown, the people from Xi'an Aircraft Co., Ltd. first sent me a confidentiality agreement, and also kindly reminded me: "Comrade Zhou Yan, you have to think carefully and sign this confidentiality agreement."
According to the agreement, you are not allowed to go abroad within five years, and you are not allowed to disclose any information about the engine to the outside world for ten years without permission..."
Zhou Yan only had one answer: "I have been waiting for this day for a long time."
When they arrived at the place, Zhou Yan found out that it was a seminar on turboprop solutions.
However, this time Zhou Yan accepted everyone's inquiries as a designer, although the curiosity revealed in the eyes of the big guys and the extension of the meaning of inquiry made Zhou Yan feel a little scared.
Fortunately, this is not the first time Zhou Yan has faced a big boss like this. He answers all questions and tries his best to explain the design ideas clearly...
At the end of the day, even though he had been sitting all day, Zhou Yan still felt exhausted. And this daily routine lasted for a whole month...
Although the project review team has been cautious, cautious, and cautious, after more than a month of discussion, they had to come to a conclusion: Zhou Yan's plan is quite feasible.
Finally, the review team collectively signed a feasibility report and pushed the problem to the top.
A week later, the "Turboprop Ten" project was approved, and Zhou Yan's mentor Liu Yiming was appointed as the chief designer, while Zhou Yan also became the assistant chief engineer of the project.
Anyone with a discerning eye knows that Zhou Yan was given the title of assistant because he had not yet joined the work. If Zhou Yan was an employee within AVIC, he would probably be at least a deputy chief engineer.
Although Zhou Yan is known as an assistant, his job is hard work.
In the early stage, you need to investigate the technical research and development progress of major aviation parts factories to ensure that the things you design can be manufactured; at the same time, you also have to keep an eye on the design department and coordinate the design progress between the major design units to ensure that the drawings can be designed as soon as possible.
Finish.
After drawing the diagram, you need to make a proportional model to test the thermal performance of the fluid. Only when the parameters meet expectations can you proceed to the next stage.
Although Zhou Yan has used many mature technologies during the design, during pre-production, Zhou Yan has to go to the parts factory to keep an eye on it, and sometimes he even has to go into battle shirtless.
After working as an assistant for more than half a year, Zhou Yan's "reputation" value in the AVIC system has been maxed out.
Just when someone thought he could breathe a sigh of relief, he was pulled into the Coast Guard-700 design seminar.
Zhou Yan, who was busy with the late-stage work of Turboprop 10, didn't really want to attend such a meeting, but Turboprop 10 was prepared for the Coast Guard-700, and Zhou Yan needed to explain various engine parameters by himself.
In fact, Zhou Yan himself did the same thing. When it was his turn, he read the engine parameters according to the script, and then sat there quietly, listening to the experts talk.
The design of a low-subsonic twin-engine propeller aircraft is relatively simple compared to a fighter jet with a top speed exceeding Mach 2.
However, as an aircraft carrier airborne early warning platform, the Haijing-700 needs to extend its stay in the air as much as possible, which requires squeezing the aircraft's aerodynamic potential or improving the radar and electronic systems.
However, at present, in terms of avionics and radar, four-degree fly-by-wire control and electronically scanned phased array radar have been equipped, which has been squeezed almost to the limit.
"Mr. Liu..." Chief Li of Coast Guard-700 turned his attention to Master and Disciple Liu Yiming, who looked the most laid-back in the conference room, "Can you think of another way?"
Liu Yiming turned to look at Zhou Yan, pursed his lips, and signaled Zhou Yan to speak.
"At present, the power performance of our turboprop ten is basically no less than the level of the T56-A-47 currently in service in Yingjiang. After the engine is installed, there is a possibility of further improvement with secondary improvements..."
Seeing the chief aviation designer's face suddenly droop, Zhou Yan quickly added, "However, if the propeller blades are improved in a targeted manner, 2 to 7 percent can be squeezed out.
efficiency."
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "Xiao Li, we need further accurate data!"
"Mr. Li, I need data related to the aircraft's general aerodynamic shape and speed, the optimal economic cruising speed, the turn in emergency situations, and the stable speed that needs to be maintained after a single engine failure..."
Chief Li looked back at his secretary: "You can send it to Xiao Li later!"
"Xiao Li, when will the specific calculations be ready?"
"If you have a 'Prehistoric Simulation System' here, it will be almost done in one night!"
"Xiao Li, you can't joke about this kind of thing!" General Master Li looked at Liu Yiming seriously.
"Old Li, it should be fine!"
"Okay, let's discuss the weight reduction of the aircraft body next. Do each unit have any good suggestions?" Chief Engineer Li was still smiling, "Considering that the Coast Guard-700 needs to be put on the ship, the wings need to be folded.
It takes up extra design weight, so it needs to be made up for elsewhere... Each unit will discuss it privately first..."
"Tianfeng, do you have any good suggestions?"
"I don't have any suggestions, but I do have some ideas." Zhou Yan secretly glanced at Chief Engineer Li, "Our Coast Guard-700 should be benchmarked against the E-2C. In fact, I made an estimate just now.
For nine reasons, if only the tail is modified, the overall performance will be almost the same as that of the E-2C..."
Liu Yiming picked up the tea cup with a smile, took a sip, and looked at Zhou Yan with a smile: "What next?"
"Many of the electronic equipment on the E-2C were from twenty years ago..." As soon as the words came out of his mouth, Zhou Yan realized that something was wrong: The electronic equipment used on the E-2C is still useless to me now.
Opaque.
Forget it, just expose it!
Zhou Yan smiled slightly and continued: "Their phased array radar is a mechanical scanning type. Like old electronic equipment, it needs cooling, but ours is different. By redesigning it, we can reconsider the cooling problem of electronic equipment...