Chapter 529 I want to use it as a fighter

The source of this stack of papers was the same as the previous one, just from a different chapter. But Mr. Xiao didn't know that Gao Zhendong was stunned by the way he pulled out a stack of papers from the left and the right like a magic trick.

Mr. Gao, you never do your job, and you just do these calculations every day? Why didn't your factory fire you?
Although shocked, I still had to accept the things, otherwise they would become what my comrades called "goose eggs".

This stack of information contains a comparison of the aerodynamic performance of the fusion fuselage and the rotational fuselage under various conditions, as well as some design parameters of the fusion fuselage, which are still very useful at this time.

Spinoid is the name of ordinary machines in this chapter.

Mr. Xiao took the information, flipped through a few pages quickly, and put it down. Although he was excited, now was not the time to look at this, otherwise it would be a bit disrespectful to Comrade Gao Zhendong. Now that he had the information, he couldn't run away.

Gao Zhendong pointed at the information and said to Mr. Xiao: "Mr. Xiao, the advantages and disadvantages I just mentioned are mostly between these three ideas, comparing the advantages and disadvantages with each other. As for the advantages and disadvantages of wing-body fusion itself, you have to weigh them in this information."

The comparison of plans mainly compares the differences between the plans. As for the quality of the common goal of the plans, that is another matter and is not included in the content of the plan comparison.

Here, Gao Zhendong's three considerations are three solutions, and the integration of wing slats and wing-furment is the common goal.

Mr. Xiao naturally knew this truth. He nodded and said, "Well, tell me about the other two considerations."

"The second consideration is to take bigger steps." He almost swallowed back the words "easy to get hurt".

"First, we will test the aircraft in a wind tunnel. After that, we will redesign the main load-bearing structure of the wing-body fuselage section according to the best configuration. Then we will make modifications through flight tests to finally get the best structure. We will try to eliminate the drawbacks of the first solution and it may be even better. This method may involve touching the air intake and main structure, which is more troublesome. Its advantages and disadvantages are obvious, but neither is quite enough."

Mr. Xiao found it very interesting. Rather than being a plan, this second plan was more of a continuation and formal conclusion of the first idea.

"Well, this is a deepening of the previous one. It seems that your three plans are gradual and progressive?"

Gao Zhendong smiled and nodded: "Yes, the third option is to change the wing shape, use a truncated delta wing, reduce the thickness of the main wing, add a transition connection between the main wing and the tail wing, further improve the lift performance, further increase the internal volume, and the high-speed performance of the truncated delta wing is also good, and there are many advantages. In this way, the rear fuselage is redesigned. But this is an extreme idea, and the uncertainty is very large. It may take a lot of new technologies for this aircraft to fly stably."

This is similar to the relationship between Master 7 and Fa Cai in Gao Zhendong's previous life. They cannot be considered to be the same type of aircraft, or even the same generation of aircraft.

This move was so big that it frightened Mr. Xiao. After doing this, is it still attack -5? Mr. Gao was so radical that he didn't leave any room for retreat.

However, this is just Gao Zhendong's idea. As for Attack-5, it is still Mr. Xiao who has to make the decision himself. He knows the situation best.

After thinking for a long time, Mr. Xiao made up his mind.

"Let's go with the first one. This one has the old design as a backup, and the risk is relatively small. The pros and cons are visible and more controllable. I'll digest your two materials when I get back and make a few models to show off."

This is quite good. In fact, Gao Zhendong is not willing to spend too much energy and money on the 5th. It is a cheap multi-purpose fighter. This is its positioning. The main feature is that it has enough functions and can be used, but cost is still the first priority.

As long as the first plan can be implemented, the lift performance can be appropriately improved, the mounting structure can be rationalized, and the aircraft can carry more loads, while the cost does not increase too much, it will be excellent whether for self-use or export. The original 5Ye was the first generation of export star products.

Gao Zhendong nodded: "Well, Mr. Xiao's idea is very good. I personally prefer the first option."

Mr. Xiao smiled and said, "It's mainly because I think the second one makes too much noise, but it's not good enough to be worth the price. As for the third one, it's just too risky."

After saying that, he looked at the wing-body fusion diagram drawn by Gao Zhendong and sighed: "But this wing-body fusion aircraft is so beautiful, what a pity..."

In order to demonstrate the benefits of wing-body fusion more intuitively, Gao Zhendong drew the schematic diagram based on Wuye's actual aircraft wing. It was drawn very carefully and vividly, and it looks very beautiful at first glance.

Gao Zhendong thought that what Mr. Xiao meant by "a pity" was that he couldn't get the most beautiful one, but Mr. Xiao's next sentence didn't mean that.

"It's a pity that I think this wing blade is too awkward and destroys the beauty."

I have to say that Mr. Xiao has an artistic talent. If on the rotating body, everyone has an abrupt transition and goes straight, and the two tall upright wing blades do not seem out of place at all, then after the fusion of the wing and body, the transition from the body to the wing is very smooth and beautiful, but halfway through, suddenly you see a wall, which would make anyone feel uneasy.

The wing blades on the 6th model are not out of place, but the wing blades on the 10th model are extremely ugly, mainly because the unified art style is destroyed at once. Not to mention the wing blades, the small sticks between the air intake and the fuselage of the 10th model have been ridiculed as "villains" by netizens for a lifetime, until the B/C model was changed to DSI. In fact, Gao Zhendong has no opinion on the wing blades on the 5th model. This thing is a simple, direct, effective and low-cost means of wingtip stall control.

Apart from being a bit ugly, having a certain weight cost, and affecting the aircraft's horizontal maneuverability, there is nothing wrong with it in this era.

Not to mention the Fifth and Sixth Masters, when the Citigroups improved their F/A-18, the mounts destroyed the airflow, making its original boundary layer blowing design on the verge of failure, so they simply and crudely added two small winglets on the wings.

However, since Mr. Xiao mentioned this matter, Gao Zhendong was not at a loss for words.

"It's possible to get rid of this thing, but it will bring some work. We need wings."

Mr. Xiao didn't expect that Gao Zhendong even had a way to do this thing. The main reason was that this was already a very niche thing. Even if one had an amateur interest in aerodynamics, one would generally not consider this thing.

It seems that Mr. Gao's research on the aerodynamic shape of the aircraft is very thorough and extensive, and he has delved into every detail. For a moment, he almost had the idea of ​​picking up the third high-risk plan and trying it out.

But although that plan couldn't work, he was still very interested in how to remove the wing blade: "Boss Gao, tell me, I'll see if it can be used."

Gao Zhendong thought for a moment and said, "There are many ways, but most of them require major changes to the wings, which are not suitable for you at this stage. There is only one method you can try."

There are many ways and plans. Mr. Gao has a lot of things in his head.

This time Gao Zhendong didn't need to go to get the information. This method was relatively simple and intuitive. He just had to tell them to go to the wind tunnel and blow the air themselves.

"Sawtooth wings! The wing blades use a physical method to erect a metal wall to prevent the boundary layer airflow from flowing toward the wing tip. It actually works quite well, hahahaha."

Gao Zhendong smiled and drew a simple diagram of the sawtooth wing on paper.

"The sawtooth wing uses the sawtooth to stir up vortices and disrupt the flow of the boundary layer toward the wing tip. It's like an air wall. But I don't think it's as effective as a wing blade, and it's not as simple as a wing blade. Anyway, it's a method, but it's not a must-have alternative. You can give it a try."

The Wing Knife has survived on our aircraft until the Pointed No. 8 and the Leopard, and the reason is not necessarily that we have no other way.

After all, it is possible that the technology was not thoroughly studied in the first ten years or so, but it is unreasonable to think that there is no solution in the next few decades. The biggest reason is probably that this thing is really simple, cheap and easy to use.

Therefore, Gao Zhendong did not mean to strongly recommend it. He just mentioned this method for reference. Whether it should be used or whether it can be used well depends on the comrades from the Cifei Factory to go to the wind tunnel and try it out themselves.

Being able to design the Gong-5 to be so symmetrical and beautiful in this era, it is estimated that Mr. Xiao has a certain attainment and pursuit of aesthetics, or at least is very sensitive. He has a great interest in the simple and direct serrated wing drawn by Gao Zhendong.

He carefully copied down the schematic diagram drawn by Gao Zhendong, praising it repeatedly: "Well, this method is not bad. I must try it when I go back."

Mr. Xiao made the decision in his mind to try integrating the wing strips, wing fuselage and the wing into the same model.

Watching him copy the diagram, Gao Zhendong smiled and said, "Boss Xiao, this is probably the situation of wing-body fusion. You mentioned a problem with its use. What is it?"

President Xiao copied the map in a few strokes and raised his head from the notebook: "President Gao, judging from your comments on our Gong-5, I'm afraid you don't just want to use it as an attack aircraft, right?"

An old senior is an old senior, he can see through things at a glance.

Gao Zhendong smiled and said, "You are right, Mr. Xiao, I actually want to use it as a multi-purpose fighter."

"A multi-purpose fighter? Isn't it too extravagant to use a fighter to do other miscellaneous tasks?"

Gao Zhendong shook his head: "On the contrary, in my opinion, this is a solution to our current shortage of fighter planes. Think about it, if an aircraft can be used as a fighter, a light bomber or an attack aircraft, and it is faster than a light bomber, more accurate than an attack aircraft, and cheaper than a fighter, then wouldn't our air force be more flexible in use?"

Gao Zhendong did not mention battlefield interdiction and close air support. It would be a bit irrelevant to talk about these things with General Xiao now.

(End of this chapter)