Siheyuan: I eat melons while doing scientific research

Chapter 1147 Gao Zhendong is Everywhere (Two more chapters)
"Plan No. 3 actually benefits from our recent technical cooperation with Gauls. We have obtained Gauls' design experience and information on delta wings, which gave us the idea of ​​using a layout similar to the Gauls Mirage-."

The attitude of the comrades from the Southwest Aircraft Research Institute towards Plan No. 3 and Plan No. 4 is quite interesting. In terms of fashion, the delta wing on which Plan No. 3 and Plan No. 4 are based is not as good as the variable sweep wing.

However, in terms of the degree of mastery of the plan, the delta wing is far superior to the variable sweep wing.

The variable sweep wing is a blank slate, and we don't even know how it is changed, hydraulic? Electric? Not sure.

But the delta wing is different. With the MiG-21 leading the way in front and a full set of Mirage 3 delta wing design information following up in the back, with two great empires serving one, how could that be a small blessing?
Although the overall structure of the MiG-21's delta wing is somewhat different from that of the Mirage, you can still tell whether it is a delta wing or not.

"Plan No. 3, we are going to use a tailless delta wing configuration. This configuration has many advantages at high speeds, but its disadvantages are limited maneuverability and insufficient take-off and landing performance..."

Listening to the words of the comrades from the Southwest Aircraft Research Institute, the Defense Work Committee Lingao looked at Gao Zhendong. No wonder he was staring at the Gauls' delta wing. It turned out that he had already expected that the delta wing would be very attractive to our comrades.

This is indeed Gao Zhendong's idea. No matter how hard our engines work, there is an objective gap. In this case, if we want to use a medium-thrust engine to achieve high altitude and high speed as much as possible, the delta wing is a very good choice.

Gao Zhendong knew the problems of delta wings, but he knew better how to basically solve these problems. As a latecomer in technology, making a "bucket machine" would undoubtedly lead to being beaten by others. On the contrary, it would be more practical to give full play to the characteristics of delta wings and achieve "one new trick" while keeping other performance basically the same.

Besides, it is hard to say whether what Gao Zhendong has in his hands is just a "new trick" in the current environment.

The comrade from the Southwest Aircraft Research Institute did not stop his report: "... Fortunately, through the Gauls' full experience in the Mirage 3, we can solve these defects of the tailless delta wing to a certain extent and make it usable..."

The Mirage 3 is really worth the money, and it can even directly raise the confidence of our comrades in fighter jets to a higher level!
Whether it was the Defense Work Committee or the Air Force, comrades who knew the inside story of the matter all secretly praised Gao Zhendong's suggestion.

Comrade Zhendong's technical level is excellent!

"...Especially now that we have developed a new airfoil based on the delta wing, which can greatly improve the subsonic maneuverability of the delta wing, the application of the tailless large delta wing configuration has become more realistic..."

Well, has the news about the double delta wing spread so widely within the company?
Comrades from the Defense Working Committee and the Air Force looked at Gao Zhendong again. Wasn't this thing invented by him? Although he only made a suggestion at a meeting and gave two angles, he actually established this new wing shape, and the effect was immediate.

This type of wing shape was not created by Gao Zhendong in his previous life. The Russians' improved Su-15 used this wing shape, which was earlier than our improved version of the Type 7.

But in this line, there is basically no one earlier than us, so it can be said to be original.

Comrades who knew the inside story turned their attention to Gao Zhendong and were once again amazed by his technical level.

But what’s interesting is that the smile on Gao Zhendong’s face is a bit mysterious, and there is not much excitement or pride in it.

Maybe this thing is not a big deal to him, comrades can only guess so.

If Gao Zhendong could read minds, he might tell them that they guessed wrong.

No matter what everyone was thinking, the comrades from the Southwest Aircraft Research Institute did not stop reporting.

"So we are considering making an aircraft with air intakes on both sides, twin engines, lower wings, and a tailless large double delta wing. This will give us a better balance of high altitude and high speed, maneuverability, load carrying and other aspects of performance under our current engine performance."

Comrades applauded one after another, saying that this plan not only took into account our existing capabilities and applied the latest technologies at hand, but also added our own thinking and created our own characteristics based on imported technologies.

In the opinion of comrades, this plan is highly operational and has good performance.

Gao Zhendong was also applauding. The Southwest Institute was indeed awesome. It was not that radical, but it was not conservative either. It made good use of all current conditions.

If I weren't a hacker, I couldn't think of a more suitable solution than this.

Amid the joy, the leader of the Defense Work Committee said with a smile: "Since the third and fourth plans are of the same origin, don't wait until everyone has finished discussing the third plan before reporting the fourth plan. Report the fourth plan as well so that we can discuss it together."

Being of the same origin means having a lot in common, and discussing them separately is inevitably a bit like taking off pants to fart - a waste of time.

There is no need to reinvent the wheel.

The comrades from the Southwest Institute nodded. This was the effect they wanted to achieve. "Okay, then I will introduce the No. 4 plan that we are considering. The No. plan is actually similar to the No. plan in terms of basic configuration. The biggest difference is that in the No. plan, we are considering using the 'lift' configuration that is now entering people's field of vision again based on the tailless double delta wing..."

The "lift" configuration is actually another way of saying the canard configuration. The lift generated by the canard in front of the main wing will lift the nose of the aircraft upward, hence the name.

In fact, canards are not new. There is even an interesting piece of hot news - the first powered aircraft flown by the Wright brothers, the "Flyer 1", was a canard layout.

However, this layout was too advanced for flight control and prone to instability, so it was soon thrown into the trash. It was not until the end of S2 that the Japanese and Hans, who were desperate and trying to win with a small amount of "decisive weapons", dug this thing out of the trash. After all, the improvement in mobility brought by this thing was really high. Two things without the ability of a big flying brick wanted to use this layout to regain the advantage in mobility.

The result, wasn't very good. In short, these two things are actually useless except for leaving some topics for future generations to talk about.

Because the defects caused by this layout were beyond the limits of what could be solved by the technology at that time.

However, in the 60s, this technology was once again taken seriously by people. The technological level at that time was able to solve its biggest problem - instability.

Having said that, the plan from the Southwest Institute still brought great surprise to everyone. Although this thing is simple, it is not so simple for us.

"…Our idea is to add a pair of winglets in front of the delta wing and use the vortices generated by the winglets to improve the lift characteristics of the aircraft. This idea of ​​using vortexes to increase lift was inspired by the vortex increase of the Zhan-7 side wing…"

Well, wasn’t this striped wing still Gao Zhendong’s creation?
Canards have two main functions. One is to generate vortices to improve flight characteristics, and the other is to use canards to improve maneuverability. The two are not mutually exclusive and can be taken into account. It just tests the design capabilities.

If the vortex system is used purely to increase lift, Gao Zhendong is almost certain that the pair of canards of the Southwest Institute are fixed.

"...Using the vortex system to increase lift, the cost of the fixed canard is not great, but the benefits it brings in terms of lift characteristics and aircraft trim are huge. The instability problem can also be solved by using the movable aerodynamic surfaces of the main wing, combined with the fly-by-wire control system currently being developed..."

Sure enough, the comrades at the Southwest Institute were radical yet steady, and did not do too many weird things, or they had not yet considered moving in a more radical direction.

Comrades from the Defense Working Committee and the Air Force looked at Gao Zhendong. Although he did not directly participate in the formulation of the Southwest Institute's plans, his shadow was everywhere in these plans. Look, fly-by-wire control appeared again.

The leader of the Defense Work Committee looked at his watch and tapped the table lightly.

"It's already late today, so we are not in a hurry to discuss Plan 3 and Plan 4. Comrades and experts attending the meeting, take advantage of the rest time tonight to take a good look at Plan 3 and Plan 4 of the Southwest Institute, think about it more, and we will continue the discussion tomorrow. Sharpening the knife does not delay the chopping of wood. It's just that it's at night, and it will take up the rest time of the comrades again."

The reporting and discussion of the first two plans, as well as the reporting of the last two plans, took a lot of time. This meeting obviously could not be completed in one day. After the overall plan was finalized, we still had to spend time discussing some details of the overall plan. One day was definitely not enough.

All the participants in the meeting stayed at the Defense Work Committee Guesthouse, including Gao Zhendong, who can now be considered a local resident of Beijing.

Only in this way can the comrades attending the meeting take today's meeting materials back to their residence to continue reading.

The comrades packed up their materials and left the meeting room, and Gao Zhendong did the same.

When he walked out of the conference room, a comrade who was also an expert attending the meeting caught up with him and greeted him.

"Hello, Chief Engineer Gao, I'm from Northwest China."

Gao Zhendong hurriedly shook hands with him and said he had heard a lot about him.

You know what, Gao Zhendong wasn't just being polite, he really had heard of her for a long time, just in his previous life.

"I'm sorry to bother you, Chief Engineer Gao. I want to consult you about something." The comrade from Northwest Chongfei did not hesitate. He knew that Gao Zhendong was very busy.

"You say."

"Look, I heard they're working on all-electric fly-by-wire control, and we're wondering if we can use this system on bombers."

(End of this chapter)