Chapter 632

Although Li Jiang make complaints about his own models, if someone else says so, this guy can turn your face on the face, typically only state officials set fire to the people and do not allow people to light the goods.

This is also the ground air traffic control's inquiry. If it were for other people, Li Jiang would have cursed her for a long time. If he hadn't even driven the helicopter, he would dare to say that there was something wrong with it. It's just a mess.

But even so, Li Jiang's tone to the ground air traffic control just now was not polite, but it didn't matter. Since he dared to fly this alternative helicopter over Xingzhou, he naturally made all preparations. If not, even if he agreed, the domestic aircraft management department would not allow it.

After all, if the aircraft falls from the sky, it is easy to cause secondary accidents, especially in cities. In case of killing and injuring other people, the nature of the matter will be great.

Because of this, after receiving the request of the Tengfei group, the civil aviation and the air force formed a joint expert group to the general aviation company affiliated to the Tengfei group, and made a comprehensive technical evaluation and safety measurement on several types of aircraft equipped by the group. Only in this way can we cautiously agree that the aircraft equipped by the general aviation company of the Tengfei group can fly in the city of Xingzhou.

In other words, the helicopter driven by Li Jiang didn't rush in. People had approval.

……

"You said that the CAAC and the relevant departments of the air force have made an assessment, and there is no problem?"

Just when Li Jiang kept looking for the shooting angle according to Ju Tao's requirements, the leader who asked the staff to inquire about how the frightening helicopter appeared in the sky in the courtyard of Xingzhou cadre's family also got a reply. He could not help frowning and said that he didn't know about it.

At this time, the staff member of the report replied: "last week, there were several evaluation reports handed over by CAAC to you."

"Is it?"

After hearing this, the local leader of Xingzhou frowned and obviously did not remember.

"It is true that there is such a thing. I have some impressions. At that time, we also talked about it at the team meeting. However, first, we focused on Yonghong factory. Second, the experts of CAAC measured the aviation affairs. We didn't have to worry about it, so we quickly exposed it."

At this time, another leader of Xingzhou finally remembered. After listening to this, the leader who had just been inquired about just now had a muddled recollection.

It's not the same as what the leading comrades in front of us said, let alone last week. In the past half a year, their Xingzhou local leading group has been busy with the work of Yonghong factory without doing anything, so that other things are listed as secondary. As long as there are no major problems, it's all over.

The same is true of the technical and safety assessment report submitted by CAAC on the flying of general aviation's various aircraft types across the urban area of Xingzhou. With the help of aviation technology experts, these local leaders did not look at it very carefully. Of course, even if they looked carefully, they could not understand it, because the report has more than 2000 pages, and more than 80% of them are dizzying technical terms and precise icons .

Because of this, even without the involvement of Yonghong factory, these management cadres engaged in local governance will not make any obstacles in this respect.

It's just

"We have approved it, but who knows that this kind of thing is coming from Tengfei airlines. Look, if two propellers rotate side by side, they are not afraid of being twisted together?"

Although the leader who inquired knew that the plane in the sky had been approved, he was still dissatisfied with the query. After hearing this, the leader who reminded him didn't know when to say it. Looking at the helicopter in the sky, which was circling left and right and didn't know what to do, he also frowned. He was just about to say something to express his leadership The consistency of the system.

But before he could speak, Yodel, who was staring at the sky, suddenly slapped his head with a slap, and immediately exclaimed excitedly: "I see, Gu, it's Kaman, Kaman of the United States. The twin rotors are arranged crosswise, and the two propellers are arranged in a V-shape. By optimizing the gears in the transmission structure, the two propellers can go hand in hand. The United States has been 50 years This is the structure of the K-600 general-purpose helicopter equipped with modern equipment. My God, I didn't expect you to introduce American technology. "

When he came to this conclusion, Yodel was shocked. In the world, only the American Kaman aerospace company perseveres in the research of this kind of helicopter with twin rotor transverse cross arrangement.

The reason for this is very simple, that is, this kind of layout can greatly simplify the complex transmission mechanism of the helicopter, reduce the weight of the fuselage, and improve the carrying capacity of the helicopter.

Whatever else, take the K-600 general purpose helicopter equipped by the U.S. military in the 1950s as an example. It is only 1.8 tons in the air, but its maximum take-off weight is 3 tons.

Its carrying capacity has reached 1.2 tons. Although the figure is small, the weight is close to 70% of the weight of the aircraft itself.

Even today's aircraft can hardly carry 70% of its own weight. However, the K-600 general-purpose helicopter with cross twin rotors was built in the 1950s. At that time, there were no composite materials, no CNC machine tools, and no other advanced manufacturing technologies. Why?It doesn't seem strange, but the ingenious layout makes everything impossible possible.

Because the reverse rotation of the twin propellers in this layout counteracts the unbalanced force in the reverse direction, so that the tail rotor and complex transmission device can be removed, so that the whole speed reducer can be made lighter and smaller, and the internal mechanism is also greatly simplified. Coupled with other aspects of optimization, the whole helicopter can be made compact and light, thus creating a large ratio of this kind of aircraft Load carrying capacity of the example.

What Jodel didn't expect was that this kind of helicopter weight reduction technology was originally transferred to China by the Americans. Jodel was envious and envious. He kept crying in his heart. Why didn't you transfer it to Leipzig!

Also shocked was the leader of Xingzhou who kept questioning. The moment before, he said whether the two propellers of the plane would fall together. The next second, he sent the interpreter to know what Yodel said.

All of a sudden, one of the local leading groups in Xingzhou was stunned.

What's going on? Carman? American technology?

How can this plane be so different? It turns out that it's American technology, so there's no problem. The United States dares to be the first in the world, but who dares to be the second?

If not, the two propellers would have been fighting for a long time. Since it's American technology, you can rest assured. It seems that take-off navigation is still very good. It's very powerful to get American technology.

So some words about how advanced the United States is and how powerful it is spread among several leaders.

Gu Jingyou took a look at Yodel, who was a little sad beside him, and then turned his head to look at the leaders of Xingzhou who praised American technology. He raised his eyebrows and finally fixed his eyes on yodel. With a strange look, he said, "American technology? Mr. Yodel, is that too superficial? The zb-max helicopter in the sky is all self-developed products of our Tengfei group. Apart from avionics, if one of the core accessories is from the United States, I'll take off Gu Jingyou's head and let you play the ball. "