Chapter 147 The Russians are a little confused
At the same time, in the hotel next to the exhibition center, representatives of several Russian exhibitors were also gathering together, watching the videos and pictures taken by TASS reporters content.
Except for China as the host, Russia is the most fully prepared for this Xiangzhou Air Show.
A typical example is that they also discovered that the rooftop of this hotel is the best vantage point for filming air shows, especially flight performances, so they contributed sufficiently complete and clear image data.
Accordingly, their judgment of the current situation is much more reliable than the French.
"As far as a second-generation aircraft is concerned, the maneuverability displayed by this aircraft, especially the vertical maneuverability, is really amazing."
Although Pogosian witnessed the entire process of the J-8C flight performance at the scene, But the exhibition area he was in at the time obviously didn't have a better view than Xiaobailou. What's more, the camera also has the ability to zoom in and can capture more detailed things.
“Look.”
Pogosian paused the video tape being shown in front of him, pointed at the wing of the aircraft that was circling in a small radius on the screen and said:
< br>“This aircraft will open the leading edge slats to increase lift during low-speed flight. If I remember correctly, this structure did not exist on previous Huaxia models.”
"We can't see clearly the specific design of the slat structure from the video, but from the flight attitude and the timing of activation, we can still infer that the trailing edge of this slat should be specially optimized for low-drag orientation, so the available speed range It is relatively large, and the speed of the aircraft here is at least 450km/h, but it can still play a role.”
As the head of the Sukhoi design department, Pogosyan was almost the first to see the video. It took time to analyze the wing improvement principle of the J-8C.
“Not only does the previous model not exist, Artem Trusov and I have been working at the Aircraft Research Institute in Shengjing for more than a year, helping them verify the stability of digital fly-by-wire The aircraft’s flight control was optimized.”
The speaker was Alexander Mosin, who had previously reported the flight performance of the J-8C to Sukhoi:
“The J-8C they showed this time. The aircraft started its first flight several years ago. In fact, there is no similar design on the previous verification aircraft of this model. This slat seems...as if it was designed suddenly. "< br>
"I think this is unlikely."
Since all the design work of the J-8IIACT has been completed, Trusov and Mosin, who have no work to do for the time being, were invited to Xiangzhou together:
“Almost all Huaxia’s aircraft in the past were produced under license or copied from our models, and there was no leading edge slat design, so this should be a completely new attempt for them. A large amount of test flight data must be needed to optimize such a good effect.”
“Mosin and I just happened to see that test flight. They must have been testing this new wing configuration for a long time. You must know that it was already September. If it was really a brand new design, it would be impossible to put it on the air show just two months after it was installed. It would be too risky and completely inconsistent with the Chinese people's style of doing things. "< br>
“But...”
Mosin wanted to refute something, but was interrupted by Alexey Bulatov, who had not spoken next to him:
“No matter how long it took them, in short, judging from the flight performance, Look, the effect of this leading edge slat is quite good.”
“However, no matter how excellent the aerodynamic design of the aircraft is, abundant power is the fundamental guarantee of maneuverability, so compared to wing design, it is still important. The power of this plane shocked me even more."
As he spoke, he took out a stack of photos from his bag, then picked out one and handed it over.
This was taken by him in the China exhibition area. After the exhibition closed, he found a photo studio and had it developed in a hurry.
"I made some annotations in Russian on it. You can take a look at the performance of this engine."
"According to the data on the exhibition board, the thrust-to-weight ratio of this engine has reached the level of 6.82, and the total pressure The ratio is even greater than 18, indicating that it has a very efficient compressor. "In addition, I also need to emphasize that the thrust-to-weight ratio calculation method used by China is similar to the French military standard. Compared with our and American standards, the calculation results are better." It will be lower. If according to our calculation method, the thrust-to-weight ratio of this engine should be more than 7."
"Isn't that... the same as the RD33 engine on the MiG-29? "Almost?"
The representative of the Tupolev Design Bureau who was participating in the exhibition took the photo with a look of disbelief on his face and stared at it for a long time:
"A turbojet engine?"
Bulatov nodded:
"If you only look at the thrust-to-weight ratio, it is like this. Although the common problem of turbojet engines is definitely still there, But it is already very exaggerated.”
“Is it possible that they have deliberately raised the data?” It is a common practice around the world, and the data written on the display board in the picture is indeed a bit too shocking.
Bulatov knocked on the table next to him:
"You have just seen the performance of that aircraft, especially the vertical maneuvering part. At medium and low speeds, directly pull the stick to climb at a large elevation angle, and then To complete a 360° turning flight, if there is not enough power, it is impossible to make such a risky attempt.”
“So even if there is a certain false mark, the moisture will not be very large, and I even think, The data on this display board is probably true.”
“It is not difficult to understand why they must approve the improvements to the aircraft during the production process when they introduce the Flanker production line. ”
Pogo turned off the TV and sat back on the sofa next to him:
"Moreover, during the performance today, they played a little trick to make the aircraft's maneuverability look as good as our Su-27, which stole a lot of the limelight."
"According to the schedule. , we will have a flight show tomorrow. The previous plan was just to repeat the performance this afternoon, but now we have to come up with something new.”
Su 27/30 will be in the future for a long time. They are definitely Sukhoi's main fighters for export revenue. Pogosyan's design department is still counting on the export of aircraft to generate funds to continue to support the design of new models, so it is impossible for him to accept being robbed of attention by a second-generation aircraft.
“Do you have any ideas?”
After hearing this question, Sergei Lozko from the Ilyushin Design Bureau suddenly lit up his eyes:
"If it is just to demonstrate the maneuverability of the aircraft, then just leave the Su-30 on the ground and only let the single-seat model with better performance perform with light fuel."
"But I have a better one Good idea.”
(End of this chapter)