The RD-170 engine has four nozzles. That's because Lao Maozi couldn't control the unstable combustion of the liquid oxygen kerosene engine with large nozzles, so he simply adopted a four-combustion chamber design, which also required four nozzles.

.

Of course, we cannot think that this engine is a combination of four engines. Although it has four combustion chambers, it only has one turbine pump. This is Laomaozi's characteristic coaxial pump. A single-stage turbine coaxially drives the oxidant pump.

and fuel pump, which pump four injectors and thrust chambers at the same time. It is very compact. No other country in the world can manufacture this turbo pump alone.

This also solves the problem of synchronous ignition of the four combustion chambers, pumping oil together and burning together. Moreover, in order to ensure complete combustion, it also has a special pre-combustion chamber, because it uses advanced staged combustion technology

, this is also the only one in the world. When it comes to playing with fire, Lao Maozi is still very good.

In this way, a complete RD-170 engine has four combustion chambers and nozzles, a turbopump and two precombustion chambers. Its thrust is extremely powerful, ranking first in the world, but no one uses it.

How to do it?

Split it!

Split in half from the middle, leaving only two combustion chambers and nozzles. The precombustion chamber is also reduced to one. The turbopump can reduce its power, thus achieving the purpose of reducing the thrust by half.

When he heard this, the American was obviously very happy: "If the thrust can be reduced by half, then our Lockheed company can purchase a batch!"

Lockheed!

Who says there is no support for our international defense exhibition? Americans are here, and they are also American military industry giants!

The person speaking at this time was Steve Jobs, Lockheed's rocket expert. Although he came in a private capacity, he could still speak on behalf of the company.

"I just don't know if this rocket engine can make this kind of improvement?"

"Of course." At this time, another person had already walked over. He was Landovsky, the chief designer of the Power Machinery Research and Production Consortium. He patted his chest and assured: "Don't worry, we are very concerned about this engine.

I’m familiar with it. It’s no problem to split it in half. If you have any ideas, we can go in and discuss it in detail.”

After saying that, Landowski looked at Qin Tao again: "Mr. Qin, you can come in together."

Qin Tao shook his head: "Forget it, I won't go in. Let's talk. I hope you can reach an agreement on cooperation and add luster to our defense exhibition."

Mr. Wu stared at it for a long time before finally sighing and leaving with the others.

"Mr. Qin, why don't you go in and get involved?" Mr. Wu asked Qin Tao curiously: "This big rocket is much stronger than the NK-33."

"Yes, this is the strongest existence in Lao Maozi's aerospace industry. However, it is not something we can get involved in. Since we don't have this opportunity, there is no point in looking at it. Let's go."

Qin Tao is self-aware.

The NK-33 engine has never been installed and has never been tested in practice. Until now, it is left gathering dust in the warehouse, so he can easily purchase it.

However, the RD-170 engine is different.

There are both cooperation and concerns between Dongfang and Lao Maozi. Lao Maozi is not willing to hand over some advanced technologies to Dongfang, and rocket engines are one of them.

Want to buy an RD-170 rocket engine? No way!

Want to buy an RD-180 that has been cut in half? No way!

Don't look at the happy transactions with the Americans. That's because they are sitting at the same height. In the world's aerospace camp, they belong to the first echelon and have no idea of ​​​​playing with the people behind.

Until 2018, there were more and more opposition voices in the United States, demanding that domestic rocket engines be started. They could no longer live by purchasing RD-180. Seeing that this engine could not be sold, Lao Maozi began to cooperate with Dongfang.

For a while, rumors were flying that China would spend 50 billion to purchase this kind of engine and technology.

But it didn't come true in the end.

On the road to aerospace, you have to base yourself on your own research; others cannot be relied upon.

Although Americans say they don't want it, their bodies are very real. No matter what doubts they have, they have not stopped purchasing Lao Maozi's rocket engines. It smells so good!

If Qin Tao gets involved, he will only come out disgraced.

If nothing else, Lockheed will have a fierce fight with the Power Machinery Research and Production Consortium. The two parties will hit it off and use the RD-180 engine on the Atlas 5 rocket. The price seems to be US$10 million per unit.

Later, hundreds of units were imported.

This is also a treasure of the aerospace industry of all mankind! Mr. Wu felt a little emotional that we really do not have the ability and there is no need. After all, the thrust of this rocket engine is too strong, and there is no need for us to build such a large rocket.

For the current manned space project, it is enough to use the Long March 2. For future space station plans, a new generation of the Long March 5 will be enough. There is no need to build a rocket of this level. When the manned moon landing project comes,

There is already a new generation of technology in China.

"Mr. Qin, Mr. Qin!" At this moment, Xu Zhengyang received the call, and then excitedly said to Qin Tao: "I just received news that American Airlines Jet Company is inspecting the NK-33 engine, and Valentine has introduced it to them.

I have learned some technical data, but I need to talk to you about the procurement negotiations."

American Airlines Jet?

Qin Tao also opened his eyes wide: "Okay, but I don't have time now. Tell them that after today's defense exhibition, let's find a place outside to chat while eating."

Wu Shengli was also extremely emotional: "You kid, you are so lucky. You can make a lot of money by changing hands. How can you sell one million units?"

This chapter is not over yet, please click on the next page to continue reading! It takes less than half an hour to buy it back for one hundred thousand dollars and sell it for one million dollars. When did it become so easy to make money?

"One million?" Qin Tao smiled: "The RD-180 engine we are talking about with half of it cut off can be sold for 10 million US dollars. Our engine with half the thrust of the RD-180 is still not sold.

Four to five million? If it’s a lucky move, we’ll sell him for $3.88 million!”

Qin Tao was also happy in his heart.

After the collapse of the Red Empire, HP purchased the RD-120 liquid oxygen and kerosene engine, and American Airlines purchased the NK-33 liquid oxygen and kerosene engine. However, the specific year is unknown. As for Lockheed's purchase of the RD-180, some say it was in 1995.

, some say it is 99 years.

Regardless of that, now at least these projects are being carried out at the Capital International Defense Exhibition held by Dongfang. This international defense exhibition held by Dongfang was very successful!

"There is nothing to see here. Let's go to the aviation exhibition area next." Qin Tao said, "It's a pity that our J-15 fighter jet did not come to the exhibition, otherwise it would definitely attract other people's attention and be dazzling."

"We have to save some face for Lao Maozi. Sukhoi is also here. It's not good for us to publicly destroy others' lives like this." Wu Shengli said.

Since the air show will be held in a few months, there is not much equipment in the aviation exhibition area of ​​this international defense exhibition. Even if Sukhoi and Mikoyan Design Bureau came to participate in the exhibition, they would only bring models. The entire exhibition area

Only the fighter jets produced by Dongfang were towed here.

The J-7 and J-8 are frequent visitors to various exhibitions, so Jiaoba naturally comes to support them. The most eye-catching one in the entire exhibition area is definitely the J-31A.

Seat C in the indoor exhibition hall is occupied by the J-31A. This aircraft is now in actual condition, and it becomes even more attractive when it is on display. The limelight of the entire exhibition area is almost stolen by this aircraft.

I don’t know how many reporters gathered outside it, snapping photos.

The appearance of this aircraft is completely different from ordinary aircraft. It has a diamond-shaped nose, butterfly-shaped wings, and the two vertical tails at the tail are tilted outward. It looks extremely special.

Of course, the most dazzling thing is its canopy, which is glowing with a golden color.

Party-sheng Zhao is still there to make introductions, and it’s time to introduce them now

On to the canopy.

Once upon a time, China couldn't even make a suitable cockpit windshield. The J-7, J-8 and even the Flying Leopard used in China still used a three-piece windshield, and the glass in front of the pilot was flat. It's not that designers don't know those partitions.

The frame blocks light because the integral windshield cannot be manufactured.

Look at foreign countries, such as the American F-16, which has directly canceled the windshield and replaced it with a whole canopy. There is no partition frame, and the field of view is extremely wide.

Even when Su-27 production just started, windshields were not available domestically, and simple glass had to be imported. Only recently have domestic companies completed the matching of cockpit covers and windshields.

Looking at the J-31A in front of us, it is even more impressive.

It does not remove the partition like the F-16 fighter. There is still a partition in front of the pilot, but because it opens forward, it is integral. The glass surface has yellow reflections, which makes people feel uncomfortable.

Very surprised.

"In order to reduce the reflection of radar waves by the equipment inside the cockpit, we coated the entire cockpit cover with a gold film." Zhao Dangsheng introduced there: "We either don't do it, or we do our best if we do it.

We must use all the methods that can reduce radar reflection so that it has the smallest radar reflection area."

The cockpit cover is actually plated with a gold film!

In fact, for an expensive fighter jet, this layer of gold is not much more expensive, but it immediately looks taller.

The people below were immediately moved.

Golden cockpit, golden cockpit!

"As you can see, our aircraft is completely black. This is because we sprayed a layer of stealth coating on it. At the same time, because it is sprayed with a stealth coating, you can only view it from a distance and cannot touch it at close range. Otherwise,

It may cause our confidentiality to be leaked."

Many reporters expressed their understanding.

Of course, we cannot let these people touch it with their own hands. Otherwise, the secret of the ordinary black paint will be leaked. The real stealth coating is still early. When this carrier-based aircraft is completed and delivered to users, it will be developed and qualified.

That's about it for paint. Of course, the most important time point is still 1999.

Although we don’t have it yet, we still have to pretend that we do. We can’t be timid. Every time we show it to the public, there must be new results.

"Excuse me, is this plane ready to fly?"

"Yes, we are currently conducting a rolling experiment. When the rolling experiment is completed, we will make the first flight. If nothing unexpected happens, we will definitely be able to complete the first flight before the end of this year. This will also become a symbol of our

The J-31A project will enter a new era!"

Although there are still many questions about built-in bomb bays, weapon systems, etc., now, as long as it is a shell, a shell with an engine and a flight control system, it can fly!

In fact, no fighter jet can be complete during its first test flight. Only the domestic J-15, which was originally modified from a mature aircraft, can integrate various weapon systems during the test flight.

Everything is provided.
To be continued...