Although Liang Yuan is a real pseudo-aviation engine insider, he still knows the famous bird strike experiment of aero engine.

However, 100 of the order of magnitude are all the scenes of four or five prototypes conducting bird strike tests when the international tycoon factories are rushing to make progress. Huachen currently has no orders for external aircraft engines. Liang Yuan estimated that a prototype of the bird strike test is almost enough to roll in and out. My mother bought 100 at a time, which seems to be a little more.

"Feifei, how did you write the details on that document?"

"I only read the abbreviation and title, but I haven't read the details."

"Xiaoyuan, is these hundred chickens very important?"

The two girls thought it was Li Yuanling who suddenly cared about the canteen and planned to make something delicious. After taking it at first glance, they didn't take it to heart. If Liang Yuan, who had completely ignored the number of green files, was far less than the two girls who processed the files every day.

"Have Jia Jia heard of the bird strike test of aircraft engines?"

"Ah, I understand. Aunt Liang bought these chickens to use for crashing planes."

Like Liang Yuan, the twins have been frequent passengers at the airport since childhood, so they naturally know that birds hit planes.

"Well, Xiaoyuan, human aviation history has been around for more than a hundred years, and I have never heard of any plane going into the sky. Unlucky, it hit 100 birds. Is this a little more?"

The two girls knew about birds hitting planes, but they were a little novice in the field of professional aircraft engines. It was obvious that Ning Wanfei was a little confused.

Liang Yuan laughed and pulled the presidential harems on the table to one side, saying, "Come a few numbers to change your mind."

Liang Yuan took a pen and wrote several simple equations and a large string of data on white paper.

"I don't know that the group has developed a new aircraft engine, it probably won't be there. The only aircraft engine on FAW is SB, which came from the Navy. Take this as an example."

"The bird strike test is roughly divided into three heavyweights, large birds above 4 kilograms, medium birds above 2 kilograms and small birds above 1 2 kilograms. Like the sparrows we often see near the airport, they weigh more than half a kilogram. They are birds without combat effectiveness and are not qualified to enter such professional tests."

"The main purpose of the bird strike test is to simulate the result of an aircraft engine being hit under different circumstances. In principle, the engine may hit anywhere. If you list the data, it is to hit from the center point of the engine rectifier cone to the fan tip at the outermost edge, and you will hit every point."

"In fact, there is an easy way, which is to list the front dimensions of the three types of birds, large, medium and small, and then line each from the rectifier cone to the blade tip, and finally hit it in turn."

Of course, in actual bird strike experiments, in addition to considering the impact position, the working state of the aircraft engine must also be considered.

Generally speaking, aircraft engines have two typical working states, takeoff state at full load and cruise state at economic load.

Especially due to the particularity of the takeoff state of the aircraft, once a bird strike is encountered at this stage, it is likely that the engine power will suddenly drop, which will lead to a failure to takeoff and crash.

Fortunately, the speed of the plane is not as fast as the cruise, and the external force it receives after the bird hits may not be greater than that during the cruise.

Of course, the actual situation involves the variables involved in the bird strike test are much more complicated than Liang Yuan said. For example, the aircraft flies faster when the aircraft is cruising, but the engine blades in economic transport are rotated slowly. When the aircraft engine is running at full load, the aircraft flies slowly in the take-off and climbing stage. However, the engine blades running at full load are rotated faster than the speed of sound, and the physical performance of the blades is definitely a fixed value. In this case, the aircraft engine designers need to start from the global perspective to design and improve the engine air intake, fuel consumption and other comprehensive factors.

"The landing can glide for the time being. Considering that the aircraft has three different working states: takeoff, climb, and cruise, the bird strike test also requires simulating these three states to collide three times."

Liang Yuan pointed to the data on the white paper and said with a smile: "The windward radius of the SBE engine is 413 mm. According to the size of the chicken, the large size can be arranged in three or four, the medium size can be arranged in five or six, and the small size must be arranged in ten, simulate takeoff, climb, and cruise, and hit twenty in each state. When counting the cannon fodder when debugging the air cannon, 100 may be the mother who is careful to calculate and save money."

After hearing Liang Yuan's reason, the two girls curiously went back to the rooftop garden to find the document and looked at it in detail. Sure enough, they were almost the same as Liang Yuan's words. In order to debug the air cannon chickens, there were 60 chickens. Liang Yuan estimated that if the time to deal with the problem after the impact was taken into account, they would have to add a group of members of the suicide squad.

Liang Yuan saw the two girls discussing the incident of the air cannon firing live chickens with great enthusiasm, and deliberately pulled his face to scare them, saying, "I tell you both that the scene during the experiment was tragic. I know if it was cut into pieces. It was just what the ancients used to describe this."

"Pig heads can talk nonsense. The ancients have never seen any bird strike tests on aircraft engines."

"Cut, pig's head, do you know that before I learn knife, I actually have to learn anatomy first?"

Not scared the two girls, Liang Yuan was frightened by a girl. He remembered that he had done so many things to commit suicide on Ning Wanfei. He suddenly heard that this had to be grateful to the female devil for not killing her.

Seeing Liang Yuan suddenly disappearing, Ning Wanfei naturally knew that someone was guilty.

The girl gently pulled Liang Yuan's ear, then gently patted Liang Yuan's cheek, and said with a smile: "Miss, I have worked hard to evolve for more than two million years. After finally climbing to the top of the food chain, how could I be scared by that little scene?"

Liang Yuan no longer dared to complain. Ning Wanfei obviously borrowed the domineering remarks made by someone when facing meat and seafood.

The heroic and short-sighted Liang Yuan was rarely in an advantageous position and repaired it. It was not until ten o'clock that the three of them had finished breakfast and decided to cross the river to Huachen's new workshop.

Liang Yuan felt that since FAW has started preparing for bird strike tests, what new fan is tested by my mother, maybe it is actually a modified engine.

If there is no strong wind in Shengjing in May, it will definitely be worthy of such extremely beautiful words as high sky, clear clouds, bright sunshine and brilliant spring.

Seeing the weather outside, the three people who were curious did not ask Zhou Heng to drive to pick him up, but instead changed into dark blue Adidas sportswear and white sneakers, excitedly found three bicycles that they had not used for a long time and rode east along Hepan North Road.

"I didn't notice it normally. Dahe is so beautiful now." Liang Yuan looked around while pedaling slowly.

"It's better to look at night. Last month, you followed Lao Su and the others to work overtime every day to have a meeting. After dinner, Feifei and I would follow this road to the bridge, and then walk home from the bridge."

"Also, Xiaoyuan, the location of the Hunhe Night Ferry that you ordered two years ago was actually wrong. I heard from others in Wandu Park that the Hunhe Night Ferry recorded in the local chronicles is still gliding west."

"No matter whether he is right or wrong, anyway, the old man is rich, wherever he builds a park, he will be the late crossing of the Hunhe River." Someone looked like an uneducated village tyrant.

The light blue sky reflects the clear water of the Hunhe River, making the whole river look like a winding sapphire ribbon. Although Liang Yuan travels everywhere at home and abroad, he rarely feels idle after the Chinese New Year, and even wanders around aimlessly.

The Hun River originated in Qingyuan City, located in the upper reaches of Shengjing, and is also the mother river of the Qing Dynasty, the last feudal dynasty in modern Chinese history. The Jurchens in the Northeast lived a fishing and hunting life on both sides of the Hun River, which can even be traced back to the Song Dynasty.

After the Qing Dynasty entered the pass, in order to protect the so-called dragon vein Feng Shui, the Willow Border was established to strictly prohibit the Han people from entering the Northeast from reclaiming wasteland. In the late Qing Dynasty, the imperial court's control ability decreased. The Northeast Border Border ban was in name only and a large number of people started the road to break through Guandong. After the founding of the Republic, the Northeast launched a great leap forward in industrialization, but hundreds of years of rest and recuperation still maintained a good natural environment in the upper reaches of the Hun River.

After Liang Yuan decided to build Yuanjia's foundation in Shengjing, he had great thoughts on the Hunhe River. In addition to years of dredging, the dams on both sides of the river were replaced by ordinary sand and stone to a flood control roadbed made of granite, cement and steel bars. The surface of the dam was the Hedi North Road with a width of 24 meters and a six-lane two-way road. On Changbai Island opposite the Hedi North Road is the Hedi South Road with a two-way six-lane two-way road.

These two comprehensive embankments with triple functions of flood control, transportation and urban landscape have a total length of fifteen kilometers. Shangri-La Real Estate imported a large amount of steel and cement from the Soviet Union through Fengyuan Trade, and mobilized its own China Construction Third Bureau for more than 90 million yuan to complete the Hedi North Road project in March.

Of course, Fengyuan Material Trade, which mobilized materials behind the scenes when it was announced, did not show any signs. When Shangri-La Real Estate publicized it, the total cost of the Hedi Nanbei Road project was as high as 210 million yuan, with an average cost of 14 million yuan per kilometer.

After the project was completed, the mayor Fu Qili, who attended the completion ceremony, was extremely satisfied with the construction of Hedi North Road and was surprised that Shangri-La real estate production capacity used such savings to complete the project.

Judging from the current general price of the infrastructure market in the Republic, Shangri-La's external quotation is really not expensive at all. In the early 1990s, the Yangtze River flood control embankment cost 40 million yuan per kilometer. Although the flow of Hunhe River cannot be compared with the Yangtze River, it is still necessary to 4 million yuan per kilometer. The standard cost of four-lane highways is 10 million yuan. The south and north roads of the river embankment are both six-lane standards. Even if the road speed limit is 80 kilometers and the isolation barrier is saved, the price of 14 million yuan is definitely a conscience. How could Fu Qili think that the purchase price of the main raw material steel and cement that accounts for more than two-thirds of the total cost of the project. The cost of Fengyuan Trade imports from the Soviet Union through trade in goods is only one-third of the domestic one.

At that time, Mayor Fu Da revealed that the city was studying the establishment of an electronic industrial park in the river. Once the paging project led by the port-based collector was successful, Shengjing City will report to the central government to divide the entire part of the Hunhe city basin from the Hunhe River from the water source in the Dadong District to the end of Yuhong District into national electronic industrial parks.

After more than two years of observation, the mayor Fu Qili has figured out one thing: Whether it is Hong Kong-based power collection, Shangri-La, Lego Ocean World, all Yuanjia companies have strong hydrophilicity, either built by the river or built by the lake.

The Scientist Garden and Shangri-La Hotel, which are only separated by the road from the Tonghun River, may feel that they are a little far away from the water. After the completion, they are not afraid of spending money to dig an artificial lake and an artificial canal. When the city cadres talk about this, they all admire them and are completely useless. They are simply a typical big boss style, and they can do whatever they want when they have money.

As the head of a city, Fu Qili couldn't take any photos on the surface, so he could only follow the boss's thoughts and set up a Yanhe Electronics Industrial Park to explore the road. At the same time, the mayor has been focusing on environmental protection recently. The nine sewage outlets that were originally located in the upper reaches of the Nanhu Science and Technology Park have been cut off after the New Year. Once the national electronics industrial park is established, the city plans to completely kill the remaining 28 sewage outlets in the urban basin and build two 500,000-ton sewage treatment plants.

After Liang Haiping took over the North Carriage, he was so busy that he didn't meet Liang Yuan. Originally, Liang Haiping's official friend, District Mayor Ou Guiqing, could no longer convey some of the city's tactful thoughts to Liang Yuan in time through this channel. He Yunwei could not report to Liang Yuan seriously at the first time in small matters like the closing of nine sewage outlets in the upper reaches of the Hunhe River.
Chapter completed!