A big country of aerospace with black technology

In March, the grass grows and the warbler flies.

The Rocket Research Institute has entered a new stage in the research and development of the new 1210-ton recoverable rocket.

The integration of various systems is proceeding in an orderly manner.

The fastest progress is the overall shape design of the rocket, and the finalization work has been preliminarily completed.

Because the structure, shape and structure are different from the previous three-stage liquid rockets.

Therefore, if the shape design of the rocket is to be formalized, a series of wind tunnel tests are required.

Aerodynamic Research Center High Speed ​​Institute, Supersonic Wind Tunnel System, FT-51 Wind Tunnel.

The dimensions of the new recyclable rocket are 72 meters long and 4.5 meters wide.

Among all the wind tunnel systems in China, only the FT-51 wind tunnel can test supersonic objects of such a large size.

In the supersonic state, the shape design of the rocket is slightly worse, so to achieve the same speed, the fuel consumption will be greatly increased.

So whether it is to increase the speed of the rocket or to save fuel consumed during acceleration.

It is necessary to design the shape of the rocket to the extent of excellence.

And blowing wind in the wind tunnel is to simulate the operating state of the rocket under the supersonic state.

You know, because the thrust of the 1210-ton propulsion system is actually more than enough to propel this rocket.

After all, the weight of the entire rocket, plus the fuel and payload satellites, the take-off mass will not exceed 600 tons.

So the focus of this test is not rocket fuel economy performance.

The real point is actually to test the stability of the rocket at supersonic speeds.

If it is not possible to maintain the stability of the structure when the rocket is launched into a supersonic state, then the rocket is at risk of disintegration.

"How about the finite element simulation of the shape and force done with the small supercomputer in the research institute?"

Flipping through various documents, Zhang Xingyang asked Qiao Yang who was sitting beside him.

The two took the train this time, heading to the High Speed ​​Institute of the Aerodynamic Research Center.

The train car is a soft sleeper car for only two people, and it is a confidential car that has passed the national security inspection, so Zhang Xingyang dared to discuss the specific information of the rocket with Qiao Yang on the train, and was not worried about information leakage.

And the entire new rocket has been transported by train to the city where the high-speed Institute of Aerodynamics Research Center is located.

Then it is transported to the location of the wind tunnel system of the high-speed institute through super-long freight trailers.

Of course, during this process, all transportation was carried out under the care of the national security system.

Even the drivers driving these heavy-duty trailers are professional transport teams who have undergone political review.

For the transportation of the rocket, Liang Yi, the chief housekeeper of the research institute, coordinated nearly a hundred units, and then safely and confidentially transferred the rocket from the final assembly center to the wind tunnel test site.

Because after getting off the train, it is transported in sections, so it needs to be assembled before the wind tunnel test.

"The results of the force finite element simulation are not bad. There is no place where the force is relatively concentrated, and the stress concentration phenomenon is not very obvious."

Qiao Yang, as a genius with full talent in rocket mechanics, naturally won't have any problems.

So this result was not beyond Zhang Xingyang's expectation at all.

"Qiao Yang, have you been exposed to wind tunnel testing before?"

As a freshman who has just left school for less than a year, Qiao Yang really met him when he was in school.

"When I was in school, I saw it once when I was doing research with my tutor, but I didn't use it."

Aerospace has a small wind tunnel, but the test speed it can provide is limited, and the size is not very large.

However, even so, as an ordinary student, Qiao Yang still hadn't actually used it, only visited it by chance.

"Then you are about to really open your eyes this time. The wind tunnel we are going to this time can be regarded as the most advanced one in China."

"Not only can it test large supersonic objects, but the test speed is also very high, capable of reaching 5 times the speed of sound."

Qiao Yang immediately became interested, after all, there are not many such things in the world.

For a mechanics expert like Qiao Yang, the wind tunnel is like seeing an extremely rare figure for an avid figure lover.

I saw his eyes shine: "I told the seniors in the audiology laboratory before that our new rockets are usually blown in a wind tunnel. I didn't expect that I would be able to meet them in less than a year after I first came here!"

"In fact, the FT-51 wind tunnel looks advanced now, but it is still not enough to develop a real killer!"

Now that the wind tunnel is mentioned, Zhang Xingyang is willing to talk a little more.

"Five times the speed of sound is not enough? Now the limit speed of the rocket is generally like this?"

Qiao Yang was a little surprised. After all, rockets, missiles, or airplanes at this time, as long as they can fly in the sky, there are very few objects that can exceed 5 times the speed of sound.

"Generally speaking, it seems to be enough, but if you want to develop hypersonic weapons, there is still a long way to go!"

"Hypersonic weapons with a speed six times faster than the speed of sound will definitely become more and more important in future wars."

"Whether it is a ground attack or an anti-ship attack, hypersonic weapons will be required."

"In a war where mushroom eggs cannot be used, hypersonic weapons are definitely the sharpest spears in our hands!"

What Zhang Xingyang said made Qiao Yang a little silent.

Yes, this incident was almost a thorn in the hearts of all the people in the country at that time, and it made everyone feel heartbroken!

"The development of hypersonic weapons must rely on a hypersonic wind tunnel that can reach more than six times the speed of sound."

Zhang Xingyang's words cut into Qiao Yang's heart like a knife.

"A hypersonic wind tunnel is indeed very important as you say, but the technical difficulty here, even if I haven't been in contact with it, I know it should be very big."

"With the current domestic technical strength and economic situation, it is very difficult to build a hypersonic wind tunnel!"

"Very difficult!"

Although Qiao Yang kept talking about the difficulty of building a hypersonic wind tunnel, Zhang Xingyang could tell that he really wanted this to be done.

"There will be technology, and there will be funds!"

"It depends on whether we want to do it or not!"

Zhang Xingyang's eyes shone with a light that Qiao Yang didn't quite understand.

After all, no one knows at this time that the Asian financial turmoil is coming.

Zhang Xingyang had already told his superiors about this matter in advance last month.

The higher-ups also promised him that if they could get a lot of benefits from the original crisis, they would allocate part of the funds to them for special construction.

At that time, Zhang Xingyang proposed to build a batch of hypersonic wind tunnels.

To support the development of hypersonic weapons.

If this thing can really be done.

Then, grab the wool of Western capitalists to create the strongest spear to kill them!