Chapter 45 Fan Design for Dimensionality Reduction Strike
"Then... then we have no chance?"
Yan Wenbin had an expression of reluctance on his face.
Not only because he has invested a lot of energy and cost in this project, but also because he originally planned to use this order from Changhong Group to build up the reputation of his Owl brand motor in the industry. .
"This... is not necessarily true." Wang Luoyong shook his head: "With the size of our Changhong Group, we still have some say, so there is not no room for maneuver."
"Uncle Yan, if your Owl Motor products can surpass Fuji Electric in both performance and cost, then we will have the confidence to convince the superiors."
In the final analysis, this matter is still due to the extension of the bidding deadline. The method of creating opportunities for Yan Wenbin was too rough, so Fuji Electric discovered the key to the problem, and then took advantage of the loopholes in the statistical method of localization rate and stole it directly.
In addition, the Changhong Group is not completely reasonable to begin with, so they don’t dare to speak too loudly.
But if Yan Wenbin’s Owl Motor can produce a more convincing sample than Fuji Electric, then the situation will be completely different.
At least from the perspective of Wang Luoyong and Chang Hong Group, they have the capital to argue.
"But..."
As a veteran who only went to junior high school, Yan Wenbin is not very technical, but he participated in the entire bidding process last time, and he was deeply concerned about the relationship between his own products and Fuji Electric. There is still a rough estimate of the gap.
Although he did not know the term marginal effect, his past experience in the army told him that it is easy to improve training results from unqualified to qualified, but it is more difficult to improve from qualified to excellent. If you want to continue to strive for excellence in every line, you will have to work even harder.
The product produced by Fuji Electric is obviously the result of continuous improvement.
Therefore, although Hao Dagang was full of praise for the college student who optimized the design, Yan Wenbin really couldn't believe that someone could make the performance of the fan surpass the opponent's in less than a week.
However, Hao Dagang next to him seemed more confident:
"Brother Yan, I think we may not have no chance. I have read the design document provided by Brother Chang, and it is still quite reasonable. It makes sense."
After hearing this, Yan Wenbin had no choice but to nod and said to Wang Luoyong next to him:
"Anyway, we are here, let's do a test first. Let’s see the results.”
“Uncle Yan, Brother Hao, follow me.”
Wang Luoyong picked up the small wooden box with the fan next to it and walked into the testing workshop with Yan Wenbin and Hao Dagang.
Although he also wants to help in this matter, there is really nothing he can do now.
Forging test data, on the one hand, he didn't bother to do it, and on the other hand, it was useless. It was only a matter of time before he was discovered.
And more importantly, if we rely on this method to increase the localization rate, wouldn't it be no different from that of Hongxiang Motor Factory?
It’s just that the specific process of counterfeiting is different.
With such regret and guilt, Wang Luoyong placed the wooden box next to the test equipment and opened the lid.
There are 6 fan samples neatly stacked inside.
"Should I say it, your injection molding process...has made a lot of progress?"
Because the fan is placed vertically, Wang Luoyong cannot see the blade style at first glance. But even at a glance, Wang Luoyong could notice the improvement in manufacturing technology.
“In fact, the process itself has not changed much. On the one hand, the proficiency of our workers has improved. On the other hand, the mold manufacturer said that the manufacturing difficulty of this new leaf shape is relatively low.”
Regarding technical matters, Hao Dagang naturally gave the answer.
Wang Luoyong nodded, then randomly pulled out a fan from inside and prepared to install it on the motor of the air duct test bench.
"Huh!"
The moment he saw the shape of the fan blades, he couldn't help but exclaimed:
"This leaf shape of yours is indeed a bit novel. I worked in Changhong After all these years, I have never seen a similar design.”
There is no praise or irony in this sentence, it just feels... very fresh.
“We found someone from Beijing Airlines who studied aircraft design to do this. He may have some different ideas in this regard.”
For Wang Luoyong Hao Dagang was not surprised by the reaction. In fact, when he saw this leaf shape for the first time, he had similar thoughts to the other party.
But after reading the technical documents provided together, although he did not fully understand it, he at least believed that the other party did have his own complete calculation ideas, rather than just making a strange and exaggerated design to attract people's attention. .
"Learning to fly?"
In this era, the aerospace field still has a somewhat otherworldly tonality, so the phenomenon of "devolving" related technologies to the general civilian field is not yet common. It is common, and it is normal for Wang Luoyong to be surprised by this.
"Well, I have a distant relative whose child is studying at Beijing Airlines. He said that he has a classmate who is pretty awesome."
The one who spoke this time was Yan Wen, who had been silent just now. Bin.
While several people were chatting, Wang Luoyong did not delay his movements at all. At this time, he had already begun to test the first fan he had just taken out.
Yan Wenbin and Hao Dagang stood behind him, nervously waiting for the test results.
……
As data was recorded on graph paper one by one, the performance curve of this new fan gradually took shape.
Logically speaking, a series of calculations are required later to obtain the final required data.
But Wang Luoyong has tested the samples brought by Fuji Electric many times before, so...
"Holy shit... is this data real?"
Wang Luoyong murmured in an unbelievable tone.
The direct result of the fan test is the curve of the total pressure coefficient and fan efficiency with respect to the flow coefficient. Generally speaking, different blade designs will have advantages in different flow coefficient ranges, so the so-called advantages and disadvantages In fact, it is a process of performance trade-offs.
But this time is different.
The sample brought by Yan Wenbin with a somewhat strange blade shape has a crushing-level performance in the entire flow coefficient range he tested.
Especially under the most common working conditions of axial flow fans, the efficiency is even astonishingly more than 15% higher than that of Fuji Electric products.
To say that you are crushing is to be modest, it is simply a dimensionality reduction attack!
"How is the situation?"
Seeing Wang Luoyong's abnormal behavior, Hao Dagang quickly stepped forward and asked.
"I..."
Wang Luoyong looked at Hao Dagang's eager eyes, but he couldn't say any words of praise for a while.
This result was so exaggerated that he was a little worried that there was something wrong with his test just now.
"Brother Hao, don't worry, wait until I finish testing all these samples."
After finishing speaking, Wang Luoyong quickly replaced the second fan in the box , then called another technician from the next door office and asked him to take the first fan to the semi-anechoic room to measure the noise level.
However, Yan Wenbin, who had always seemed a little anxious before, calmed down, patted Hao Dagang on the shoulder and whispered:
"Dagang, I think the result may exceed our expectations."
(End of this chapter)