A big country of aerospace with black technology

Although the 300mm rockets originally produced by Yuxi Second Machinery Factory have worked hard to increase the range of the rockets, there is still no way to make the rockets have a range of more than 100 kilometers.

It is completely incomparable with the ultra-long-range rockets produced by Longguo later with a range of more than 400 kilometers.

But at this time, the range of sixty-five kilometers is not bad.

The solid rocket motors used in the 300mm rockets produced by the Second Machinery Factory in Western Henan were not considered advanced even at this point in the 1990s.

Therefore, the restarted six-pack 300mm rocket uses the latest model of solid rocket motor produced by Factory 112.

The fuel in the solid engine is the all-nitrogen propellant that has just been developed before!

The total nitrogen propellant of the same mass can generate thirty times more heat than unsymmetrical dimethylhydrazine!

That is to say, if the thermal efficiency between the two is not considered, the thrust of the rocket with the same mass of propellant will be thirty times that of the original!

Of course, these are the results under ideal conditions. The actual reaction is in the range of rockets. It would be nice to have a ten-fold increase.

"What about small solid rocket motor production?"

Zhang Xingyang asked Chen Chunming, who was in charge of producing the engines needed for rockets.

"The difficulty of production is not as great as we imagined. At present, a few units have been trial-produced, but they have not been tested yet."

Chen Chunming brought Zhang Xingyang to several completed small solid rocket motors.

The rocket motors required for rockets are much smaller than the rocket motors required for space rockets.

And from the perspective of technical difficulty, the technical difficulty of small solid rocket motors is also very small.

Although the nozzles for multiple angle adjustments are also required, there is no complicated gas circulation system like the YF-100 liquid oxygen kerosene engine manufactured before.

So in less than a month, Factory 112 basically figured out the technical difficulties in the new solid rocket motor.

Four small solid rocket motors were produced.

He looked at the engine in front of him, which still had traces of newly cut metal.

After Zhang Xingyang touched it, he looked at Chen Chunming who was standing aside:

"How's the test site going?"

"It's almost ready, and the simulation test bench needed for No. 1 and No. 2 is ready."

"The area of ​​the test site required by No. 3 and No. 4 is a bit too large, and we are still coordinating with the local area."

Chen Chunming hurriedly reported the situation of the test field prepared for these four engines.

"It may not be so convenient for you to coordinate. Let's put this matter aside for a while, and I'll find a way to solve it."

Zhang Xingyang frowned and thought for a few seconds before making a decision.

Because the test field area required in practice is very large!

You must know that even if the range is only increased by five times, the new solid rocket motor can launch the original 300mm rocket to a distance of 300 kilometers.

Not to mention, in fact, the increase in range may reach eight times, or even ten times!

If it can really improve tenfold, then the test site needs to be at least 600 kilometers long!

With such a large piece of land, it is difficult to coordinate other places except the large-scale weapons testing ground in the Northwest Gobi.

"Let's take a look at the performance of the engine on the simulated test bench first!"

After Zhang Xingyang finished talking about the test site, he didn't criticize Chen Chunming too much.

After all, it is normal for him to be unable to coordinate with his ability.

Factory 112, as a unit specializing in the production of rocket engines for the Rocket Research Institute, naturally has a simple simulation test bench.

It is used to carry out the last inspection of the rocket engine before leaving the factory.

But this is only a process that rocket engines on space rockets have.

When Factory 112 began to produce solid-fuel rocket motors for rockets, it was impossible to test every rocket motor.

After all, this thing is too cheap compared to almost every aerospace rocket engine that reaches millions.

Engineers installed two small solid-fuel rocket motors on the simulation test bench, and then installed the auxiliary excitation device on the motor.

After the two rocket engines on the simulation test bench are excited by the auxiliary excitation device, they burst out with blue and white flames!

Various detection components on the test bench began to faithfully record various data of the solid fuel rocket motor during this process.

Because the solid rocket motor, even though it is small in size, the flame produced after starting can reach seven or eight meters long!

If it weren't for the double-layer protection of thick heat-insulating glass and bullet-proof glass in front of it, it would be impossible to get close!

But even the small rocket motor didn't work for long, less than two minutes after a violent release of energy.

With the reduction of fuel, the rocket engine gradually stopped working.

"It seems that the working condition is not bad." Chen Chunming said, looking at the gradually shutting down rocket engine.

"We will not know until the specific data comes out."

Zhang Xingyang was not as optimistic as Chen Chunming.

Because the performance test of small solid rocket motors is relatively simple, the answers to various data can be obtained almost on the spot.

Zhang Xingyang quickly browsed through the above items at a speed that was difficult for others to understand.

In less than five minutes, Zhang Xingyang read all the data, and spent a little more time calculating the results.

Zhang Xingyang came to a conclusion: "The best result we expected was not achieved."

"However, compared with the rockets used before, it can increase the range by about 7.6 times."

"The speed has also increased by about 60%!"

Chen Chunming was not able to understand the test report full of various data, and was still reading the second page at this time.

But Zhang Xingyang's words, he can still understand.

In other words, after installing the small solid-fuel rocket motor manufactured by Factory 112, the range of the 300mm rocket will be increased from the original 65 kilometers to nearly 500 kilometers!

Although Chen Chunming knew that the new small solid rocket motor was powerful, he was still taken aback after doing some mental calculations!

You must know that missiles with a range of more than 300 kilometers in the world are not allowed to be exported.

And the rocket launcher they have developed now has a range of 500 kilometers, even surpassing a lot of short-range missiles!

And bypass the export restrictions!

In other words, this thing can be sold for a small amount of money!

And the speed has also increased by 60%. You must know that the speed of today's 300mm rockets is already very fast, reaching Mach 3.6!

Another 60% increase, the speed will reach about Mach 5.8!

This speed has exceeded the speed of most supersonic fighter jets today!

"If it is going to be exported, it seems that this thing can't be sold, right?" Chen Chunming knew the Rocket Research Institute's attitude towards this rocket launcher in the future.

Its castrated version, that is, the version with a weakened warhead, will be sold externally.

But its range exceeds 300 kilometers, and if it is exported, it will easily cause various criticisms.

Hearing Chen Chunming's worry, Zhang Xingyang smiled and said.

"We sell rockets with a range of 200 kilometers."

"It's just that the error is a little big."

"The error is three hundred kilometers!"