Although Liang Yuan is a genuine pseudo-aero engine insider, he still knows about the well-known aero engine bird strike experiment.

However, 100 of this order of magnitude are the international tyrant manufacturers to catch up with the schedule, four or five prototypes together for bird strike test big scene, Brilliance currently has no orders for external aero engines, Liang Yuan estimates that a prototype to do bird strike test 20 live chickens are almost enough to roll, his own wife bought a hundred at a time just like a little more.

"Fei Fei, what is the details on that document?"

"I only read the abridgement and the title, but I didn't read the details. ”

"Xiaoyuan, are these 100 chickens important?"

The two girls thought that Li Yuanling suddenly cared about the cafeteria, and planned to get something delicious, but they didn't take it to heart after taking it to heart, if they only talked about the number of documents read, Liang Yuan, who had completely ignored the green documents, was far less than the documents that the two girls handled every day and read more files.

"Has Jiajia heard of the bird strike test of an aero engine?"

"Ah, I see, these chickens that Aunt Liang bought are going to be used to hit planes. ”

The twins, like Liang Yuan, have been frequent visitors to the airport since childhood, and they naturally know about birds hitting planes.

"Uh, Xiaoyuan, it's been more than a hundred years in the history of human aviation, and I've never heard of a plane that went into the sky and was unlucky enough to hit 100 birds, isn't that a little more?"

The two girls know how to hit a plane or something, but they are a little novice to the more professional aero engine field, and it is obvious that Ning Wanfei is a little blindsided.

Liang Yuan laughed, put aside the presidential harem on the table, and said, "List a few numbers to change your mind." ”

Liang Yuan wrote a few simple equations and a large string of data on a blank piece of paper.

"I don't know about the group's development of a new aero engine, I guess there is no more, then the only aero engine on the Brilliance side is Spey from the navy, take this as an example. ”

"The bird strike test is roughly divided into three weight classes, 4 pounds or more of large birds, more than 2 pounds of medium birds and 1 two or two small birds, like the sparrows we often see near the airport or something weighs only more than half a tael, belongs to the bird species without combat effectiveness can not be on the table, there is no qualification to enter this kind of professional test. ”

"The main purpose of the bird strike test is to simulate the results of an aero engine being hit under different conditions, in principle, the engine can hit anywhere, and if you list the data, you have to hit every point from the center point of the engine fairing cone to the tip of the fan at the outermost edge. ”

"Actually, there is a simple way to list the frontal dimensions of the three types of birds, large, medium and small, and then each row from the rector cone to the tip of the blade, and finally hit it in turn. ”

Of course, in the actual bird strike experiment, in addition to the location of the impact, the working state of the aero engine should also be considered.

Generally speaking, there are two typical working states of aero engines: take-off state with full load operation and cruising state with economic load operation.

Especially due to the particularity of the aircraft's take-off state, once it encounters a bird strike at this stage, it is likely to cause a sudden drop in engine power, which will then lead to take-off failure and crash.

However, fortunately, the speed of the aircraft when taking off is not as fast as when cruising, and the external force after hitting the bird is not necessarily greater than when cruising.

Of course, the variables involved in the actual bird strike test are far more complex than Liang Yuan said, for example, the aircraft flies fast when the aero engine cruises, but the engine blade rotation in economic transit is slow, and the aircraft flies slowly in the take-off and climb stage when the aero engine is running at full load, but the speed of the blade is faster and the blade tip will even break through the speed of sound, and the physical performance of the blade must be a fixed value。

"Landing can glide for the time being, considering that the aircraft has three different working states of take-off, climbing, and cruising, the bird strike test also needs to simulate 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 Spey engine is 413 mm, according to the physique of the chicken, the large can be lined up to three or four, the medium can be lined up to five or six, and the small one has to be lined up to ten, simulating take-off, climbing, cruising and hitting twenty in each state, counting the cannon fodder when debugging the air cannon, 100 is still the mother's side to save money." ”

The two girls listened to Liang Yuan's reasoning, and curiously went back to the roof garden to find the document and take a closer look, sure enough, it was similar to what Liang Yuan said, Li Yuanling's order for the chicken death squad was to debug the air cannon alone, there were sixty chickens, Liang Yuan estimated that if the time to deal with the problems after the impact was not good, a group of death squad members would have to be replaced.

Liang Yuan saw the two girls discussing the matter of the air cannon firing live chickens with great interest, and deliberately pulled his face to scare the two of them and said: "I told the two of you that the scene during the test was old and tragic, and you know it with a thousand cuts, it is what the ancients specially used to describe this." ”

"The pig's head will be nonsense, the ancients have never seen any bird strike test of an aero engine. ”

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

didn't scare the two girls, but Liang Yuan was frightened by a certain girl, remembering that he had done so much ~ death on Ning Wanfei, and suddenly heard that this had to thank the female devil for not killing her.

Seeing that Liang Yuanmeng was silent, Ning Wanfei naturally knew that someone was weak.

The girl gently pinched Liang Yuan's ears, patted Liang Yuan's cheek gently, and said with a smile: "Girl, I have worked hard to evolve for more than two million years, and finally climbed to the top of the food chain, how could I be frightened by that little scene." ”

Liang Yuan didn't dare to complain anymore, Ning Wanfei obviously borrowed from someone's domineering remarks with contemptuous eyes when facing meat and seafood.

Liang Yuan, who was short of breath, was repaired by the two girls who were rarely in an advantageous position, and it was not until ten o'clock that the three of them who had finished eating breakfast decided to cross the river and go to Brilliance's new workshop to have a look.

Liang Yuan felt that since Brilliance had begun to prepare for the bird strike test, what new fan his wife tested was actually a modified engine.

If there is no strong wind in Shengjing in May, it can definitely be worthy of the incomparably beautiful words of high clouds, sunny and bright spring.

Seeing that the weather outside was refreshing, the three curious people did not ask Zhou Heng to drive to pick them up, but changed into dark blue Adidas sportswear and white sneakers, and excitedly found three bicycles that had not been used for a long time from the underground garage and rode eastward along Heban North Road.

"I don't usually notice that the river is so beautifully repaired now. Liang Yuan looked left and right while pedaling slowly.

"It's better at night, last month, you followed Lao Su and them to work overtime for meetings every night at night, and Fei Fei and I would walk along this road to the bridge after dinner, and then walk home from the bridge. ”

"Also, Xiaoyuan, the location of the Hunhe River Late Crossing that you ordered the year before last is actually wrong, I heard others say in the Evening Ferry Park that the Hunhe River Late Crossing recorded in the local chronicles is still gliding to the west. ”

"It doesn't matter if it's right or wrong, anyway, the uncle has money, and where the park is repaired, it will be the late crossing of the Hunhe River. "Someone has an uneducated village bully face.

The light blue sky reflects the crystal clear water of the Hunhe River, making the whole river like a winding sapphire ribbon, although Liang Yuan runs around at home and abroad, but after the Chinese New Year, there is rarely this kind of idle mood, and even some blind wandering.

The Hunhe River originated in Qingyuan City, located in the upper reaches of Shengjing, and was also the mother river of the Manchu Qing Dynasty, the last feudal dynasty in modern Chinese history.

After the Manchu Qing Dynasty entered the customs, in order to protect the so-called dragon vein feng shui, the wicker border was set up to strictly prohibit the Han people from entering the Northeast to reclaim the wasteland, the late Manchu Dynasty began to decline in the control ability of the imperial court, and the Northeast banned the border to open the road to the east of the country, and after the founding of the Republic, the Northeast opened a great leap forward in industrialization, but hundreds of years of recuperation still made the upper reaches of the Hunhe River maintain an excellent natural environment.

After Liang Yuan decided to put the foundation of Yuanjia in Shengjing, he put great thought into the Hunhe River, in addition to dredging for many years, the original embankment on both sides of the bank was replaced by ordinary sand and gravel to a flood control roadbed built by a mixture of granite, cement and steel bars, and the surface of the embankment is a two-way six-lane North River Embankment Road with a width of 24 meters, and on Changbai Island opposite the North River Road is the same two-way six-lane South River Embankment Road.

Shangri-La Real Estate imported a large amount of reinforced cement from the Soviet Union through Fengyuan Trade, and mobilized its own China Construction Third Bureau to spend more than 90 million yuan for a year and a half to complete the north and south road project of the embankment in March.

Of course, when the public announcement in the back of the mobilization of materials in the back of the Fengyuan trade did not show up at all, Shangri-La real estate publicity, the total cost of the north and south roads of the embankment as high as 210 million yuan, an average cost of 14 million yuan per kilometer.

After the completion of the project, the mayor Fu Qili, who attended the completion ceremony, was extremely satisfied with the construction of the north and south roads of the river embankment, and was very surprised that Shangri-La Land Production could complete the project with such savings.

In the early nineties, the Yangtze River flood control embankment cost 40 million per kilometer, although the flow of the Hunhe River can not be compared with the Yangtze River, but 4 million per kilometer of the embankment is still needed, the standard cost of the four-lane highway is 10 million, and the north and south roads of the embankment are two-way six-lane standards, even if the road speed limit is 80 kilometers and the isolation belt guardrail is saved, the price of 14 million is absolutely conscience, how could Fu Qili think that the purchase price of the main raw material reinforced cement, which occupies more than two-thirds of the total cost of the projectThe cost of importing from the Soviet Union through barter trade was only one-third of that of the country.

At that time, Mayor Fu revealed that the city was studying the establishment of an electronic industrial park along the river, and once the paging project led by the Hong Kong-based power collector was successful, Shengjing City would report to the central government to divide the part of the urban basin of the Hunhe River from the source of the Dadong District to the end of the flood area into a national electronic industrial park.

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, or Lego Ocean World, all Yuanjia enterprises have a strong hydrophilicity, either built by the river or built by the lake.

The Scientist Garden and the Shangri-La Hotel, which are just across the road from the Hunhe River, may feel a little far away from the water, and they are not afraid to spend money to dig an artificial lake and an artificial canal after completion.

As the mayor of a city, Fu Qili is not good at what to shoot on the surface, can only vaguely follow the mind of the big boss, and make an electronic industrial park along the river to explore the way, at the same time, the mayor has recently paid close attention to environmental protection, originally located in the upstream of the Nanhu Science and Technology Park, scattered nine sewage outlets have been pinched off after the New Year, once the national electronic industrial park is established, the city also intends to completely dry out the remaining 28 sewage outlets in the urban basin, and build two 500,000-ton sewage treatment plants at the same time.

After Liang Haiping took over the north car, he was so busy that he didn't meet Liang Yuan much, and Liang Haiping's officialdom buddy Ou Guiqing, the district head, could no longer convey some tactful and careful thoughts in the city to Liang Yuan in a timely manner through this channel, similar to the closure of nine sewage outlets in the upper reaches of the Hunhe River, He Yunwei couldn't report to Liang Yuan in a serious way at the first time.

Therefore, don't look at the city's current flattery, considering the twists and turns of the receiving channel, the actual effect is really up for debate.