Chapter 396

"This..."

As soon as Zhuang Jianye wanted to answer, he felt the smell of wine overflowing from the tip of his nose. Another look, well, the wine bottle in Ju Tao's hand was still pouring into the quilt. It all overflowed, and he didn't notice it.

Seeing Zhuang Jianye's strange expression, Ju Tao immediately realized that his wine bottle had been confiscated. He quickly pulled down the wine bottle with a shy smile, and then said, "I'm glad to hear that you have a way. By the way, Mr. Zhuang, I heard the old man at home say that the factory is going to build its own plane, isn't it the new model? ”

"Hey, you're quite well-informed. Yes, it's this new model." Zhuang Jianye doesn't hide it either. Tengfei factory has been refitting yun-5 for some time. Especially after obtaining wing deicing and landing gear technology of Yonghong factory, the refitting progress is even faster.

Now that the first prototype has been assembled, after a series of basic performance tests, it is ready to be sent to the test bench affiliated to the University of Western aeronautics for a series of body fatigue tests. If all goes well, it will be able to complete a series of tests before the end of the year, and then enter the first flight.

Seeing that Zhuang Jianye nodded and admitted, Ju Tao's fat face turned into a chrysanthemum and asked, "how high can you fly?"

"The design ceiling is 7320 meters."

"7320 meters..." Ju Tao pondered for a moment, then nodded: "although not to the height of Mount Everest, but the height of seven kilometers is barely enough."

Then Ju Tao rubbed his hands with embarrassment: "Mr. Zhuang, it's not convenient for you to show us a few, so I can estimate how to configure the equipment?"

"Didn't your old man tell you? A prototype of the new model has not been tested yet. What's your hurry? "

"Oh, Mr. Zhuang, you don't know my old man. He is full of grandchildren now. How can he tell me so much? Well, brother ye, take me to have a look."

Being said by Ju Tao, Zhuang Jianye can only nod: "it's too late today. I'll take you there tomorrow."

"It's settled." Ju Tao clapped his thigh excitedly, immediately picked up the glass and poured a full glass of wine into his mouth. After swallowing it, he separated the wine and patted his chest: "don't worry Brother ye, I understand the old rules. I promise to make the new model more beautiful than the beautiful one tomorrow. "

After that, Ju Tao rolled his eyes and fell on the wine table with a bang.

Zhuang Jianye sighed. He said that the goods were cruel enough. He was afraid that he would be too excited to sleep at night. He would pour himself down, but it was a good way.

……

The next day, Zhuang Jianye asked the van of Xiping factory to pick them up, and then personally took them to the R & D workshop of new Yun 5. When they walked in through the side door, they saw a yellow biplane plane that had not been painted, parked in the huge factory building, and several people wearing safety helmets were pointing at the plane.

Seeing Zhuang Jianye and others coming in, a tall, thin, bookish old man quickly welcomed him and said to him with a smile: "ah, Xiaozhuang, you are not refitting the plane any more. You are just breaking up and remaking a new model."

It's really Lin Guanghua's tutor, Professor Ding laixiang, who majored in flight structural mechanics of Western Aeronautical University.

Zhuang Jianye didn't expect Professor Ding to come. He couldn't help but be stunned. Lin Guanghua, who followed him, quickly explained: "our Yunwu refitting machine used several new airfoil achievements, so Professor Ding came to see how it was applied, so he came from cotton early in the morning."

Hearing this, Zhuang Jianye suddenly realized that the refitted yun-5 did apply a lot of research achievements made by Ding laixiang in the wind tunnel group in recent years, so as to enhance the wing structure, increase the overall lift and enhance the overall controllability.

The reason why we spared no effort in this aspect is very simple. The refitted yun-5 of Tengfei factory was replaced with a 882 kW Honeywell turboprop engine.

Equivalent to 1200 horsepower, compared with the 820 horsepower piston 5 engine, not only the power has been greatly improved, but also the overall weight has been reduced by 5%.

As a result, the maximum speed of yun-5 is increased from 256 km / h to 295 km / h. with the increase of speed, the original airframe structure, especially the wing structure, can not bear the aerodynamic changes caused by the speed increase.

Based on this, the redevelopment of Yunwu wing is imperative, so the original canvas skin is replaced by all metal skin, and the internal structure has also been greatly improved, which can not help increasing the internal structural strength, and adding two wing tanks, so as to improve the voyage of Yunwu.

At the same time, the flap behind the wing has also been deeply optimized to make it more maneuverable, especially in low altitude, low speed and short take-off and landing. Theoretically, it is no worse than yun-5 before the replacement.

In addition, in order to improve the flight performance and save fuel, two integrated winglets are used in the improved yun-5, which makes the high-altitude flight performance of yun-5 more than one level higher than that of the old yun-5.

Combined with wing deicing and enhanced landing gear, the improved Yunwu not only has a maximum lift of 7300 meters, but also can theoretically take off and land anywhere in the country, even in the high altitude areas of the Qinghai Tibet Plateau.Because of this, when Ding laixiang saw the prototype of the improved yun-5, he was still very satisfied. No matter what, this kind of aircraft that can be used all over the country is still a blank in China, especially the trans mountain transportation in the Qinghai Tibet Plateau and the northern and southern border areas, which has great application potential.

Of course, the most important thing is the structure of this model, which is a concentrated display of Ding laixiang's research achievements in recent years. Therefore, the old man is more interested than anyone. After all, it is the greatest happiness for a scientific worker to see his research achievements applied.

Therefore, Ding laixiang was very happy to meet Zhuang Jianye. He also said a few polite greetings to Ju Tao and others. When Ju Tao and others started to work around the improved Yun 5 prototype with photographic equipment, Ding laixiang could not help nodding: "it's time to take some photos. It's time to take some photos. It's a very good memory to take out these photos in a few years."

Ding laixiang looked at Ju Tao. They set up lights and camera positions. He agreed with Zhuang Jianye very much. After a compliment, he frowned and said, "Xiaozhuang, I've just taken a close look at your new model. Everything else is very good, but I think you've overdone it."

When Zhuang Jianye heard this, the old professor was going to give advice. Looking at Lin Guanghua, who was smiling bitterly beside him, he knew that the two men had talked before, and quickly nodded: "Professor Ding, you said that we are inexperienced here, and you, the old airline, should help us."

"Specifically, there is nothing else. Your cabin is too luxurious. Personally, I don't think it's necessary. The most important thing is transportation. You make it luxurious, waste it and increase the overall weight for no reason. Some of the gains are not worth the losses..."

Professor Ding said very seriously. Zhuang Jianye listened with a serious face. At this moment, a girl's exclamation came from the cockpit of the plane: "God, it's so comfortable in here. Can I sleep in it today?"

Professor Ding, who was giving advice, immediately turned black.