A big country of aerospace with black technology

The waverider hypersonic ballistic missile has been tested hundreds of times in the YF-21 shock wave wind tunnel.

Finally, the design of the aerodynamic layout is basically completed, and the stage of physical testing is entered.

"A recent wind tunnel experiment showed that even under atmospheric conditions."

Qiao Yang was flipping through various data charts piled up on his desk while giving Zhang Xingyang the latest report.

"Our waverider ballistic missile relies on speed and aerodynamic efficiency to form asymmetric pressure."

"It can make the warhead jump on a vertical surface at a speed of about Mach 6."

"What about terminal penetration?"

Zhang Xingyang doesn't pay much attention to the mid-range speed at the moment. After all, at this time point, the mid-range anti-missile technology of various countries has not yet been developed.

An anti-missile weapon system that can achieve a mid-range anti-missile success rate of more than 90% does not exist on this planet.

At present, everyone's anti-missile technology skill tree is basically based on terminal anti-missile.

This is why Zhang Xingyang cares more about the terminal penetration capability of the missile.

In this era, the terminal penetration ability determines whether you can break through the opponent's defense network and achieve the offensive goal.

"The terminal penetration speed is now as fast as Mach 7.2."

Even without looking at the data report on the table, Qiao Yang can accurately tell the terminal penetration speed of the current waverider ballistic missile.

"But Brother Xingyang, you also know."

"The waverider warhead, unlike other conical warheads, can increase its speed by spinning when it penetrates at the end."

"So, without improving other aspects, this speed is already the limit."

"This is not a big problem. New solid rocket motors are already under development."

Zhang Xingyang did not criticize Qiao Yang too much, after all, he knew exactly how far the technical strength of the waverider configuration could reach.

Without increasing the propulsion speed of the rocket engine, the speed Qiao Yang said is indeed close to the limit when the warhead penetrates the defense at the end.

According to Zhang Xingyang's own calculation results, without changing the body shape and improving the engine performance.

Relying solely on the aerodynamic layout to increase the terminal speed of the warhead can only reach a speed of about Mach 7.3 at most.

In other words, Qiao Yang's current aerodynamic shape design has almost approached the theoretical limit of design.

Qiao Yang had also heard from Zhang Xingyang before that the solid rocket motor they are using now is just a transitional product.

In subsequent models, engines with better performance can be used for waverider ballistic missiles.

"How long will it take?"

"Can we use it this year?"

Qiao Yang said urgently to the calm Zhang Xingyang.

With the data chart in his hand, Zhang Xingyang kept making inductive analysis in his mind.

Comparing the results calculated by Qiao Yang and the others through supercomputers, there is no difference between the two.

"The multi-mode state switching of the ram combined cycle engine has not yet been developed."

After reading a set of data in his hand, Zhang Xingyang raised his head to look at Qiao Yang in front of him and said:

"Within this year, you probably won't be able to use it."

"However, within two years, the research and development should be completed."

"Isn't the improvement effect of the solid fuel engine in the past after being replaced with a total nitrogen anion salt?"

"Do you need to be in such a hurry?"

Qiao Yang smiled shyly at this time, revealing a trace of youthfulness.

"It's not that I can't bear it after hearing good things."

"The current solid fuel engine is still very easy to use."

"However, the main improvement is still in the energy release time, and the range of the missile is improved."

In the case of not using all-nitrogen anion salt as the engine fuel, the range of the waverider ballistic missile is about 2,400 kilometers.

Among them, the stages that need to start the missile engine are mainly the initial stage and the end.

In the initial stage, the role of the missile engine is mainly to transport the ballistic missile outside the atmosphere as quickly as possible.

At the end, the missile engine mainly plays the role of speed increase and maneuver penetration.

As for the mid-flight process of the missile, the waverider missile mainly relies on its own special configuration and asymmetrical atmospheric pressure to "float" in the atmosphere.

With the use of all-nitrogen anion salt, the range of the missile can be increased by about three times, reaching 7,200 kilometers.

"In fact, from the perspective of fuel efficiency alone, the range of the missile can be greatly improved."

Zhang Xingyang temporarily stopped to look at the data chart in his hand, and explained to Qiao Yang why the fuel efficiency of the total nitrogen anion salt, which is about eight times that of traditional fuels, can only increase the range by about three times.

"However, in order to prevent the enemy's anti-missile system from attacking, we have made a compromise to a certain extent."

"The extra-atmospheric flight time of a waverider ballistic missile is less than 20 percent of the entire process."

Ballistic missiles fly outside the atmosphere, and because there is no air resistance, they consume very little fuel.

The farther it flies in the process, the farther the missile will go.

Generally speaking, this process can reach 70% of the entire missile range!

But when flying outside the atmosphere, because the missile's flight attitude is stable, the signal characteristics are very obvious because it is not easily affected by the atmospheric environment.

The prediction of flight trajectory is simpler and more accurate, so it is easier to carry out anti-missile work.

In many tests of the Yingjiang anti-missile system, this mid-section interception method has been adopted, and the success rate is relatively high.

However, the flight time and distance of the waverider ballistic missile outside the atmosphere are very short, and it does not give the opponent the opportunity to conduct an anti-missile attack at this stage.

When the waverider ballistic missile enters the atmosphere, because of the unique "floating" trajectory, although it has a more obvious up and down trajectory, for supercomputers, the calculation difficulty rises sharply.

At this time, it is almost impossible to predict the trajectory as accurately as when it was outside the atmosphere.

"Although it can move quickly through the atmospheric pressure difference within the atmosphere, the fuel consumption is still several times that of before."

"It is not easy to achieve the current range."

After Zhang Xingyang finished speaking, he seemed to think of something again and said:

"However, for us, such a range is enough for now."

With a range of 7,200 kilometers, and a Hawaiian naval base that can threaten Eagle Sauce in the Pacific Ocean.

For the country, this is another hole card that can be used in war.

And this is a hole card that the opponent has no way to crack after it is used.

Qiao Yang understood what Zhang Xingyang didn't say carefully.

However, he was still a little greedy, and said with some emotion:

"It would be great if it could threaten their homeland."

If they want to be able to directly threaten their homeland, they need at least a range of more than 10,000 kilometers.

Of course, if you go from the easternmost point of the country to Alaska, it doesn't have to be that far, it only takes less than 5,000 kilometers.

The current waverider-shaped ballistic missile can complete such a strike.

In the eyes of ordinary people, it can only be done at the speed of simple browsing. Zhang Xingyang has read the data charts of the last 100 shock wave tunnel experiments.

"From the recent experimental data, the effect of the wind tunnel experiment is no longer obvious."

Qiao Yang was no longer as shocked as he was when he saw Zhang Xingyang's abnormal memory and calculation power.

However, he was stunned for a second before he came back to his senses and said:

"Indeed it is."

"Simple startup shape design, it feels like it has come to an end."

Zhang Xingyang stood up from his desk and stretched fiercely.

After hearing the crackling of the bones all over his body, he said:

"The next stage of work can begin."

——

Before the first waverider configuration ballistic missile flight test, the naming work was carried out first.

The official name of this type of ballistic missile was determined.

Dongfeng-17!

In the future, there will be a large number of names appearing on the headlines of major media.

"Xing Yang, how did you feel about the first trial?"

"Are you confident that you can succeed?"

The old chief patted Zhang Xingyang on the shoulder and asked kindly with a smile.

As a person in charge of domestic ballistic missile affairs, the old chief probably felt much more nervous than Zhang Xingyang about the first flight test of Dongfeng-17.

This can be seen from the fact that Zhang Xingyang's shoulder was almost smashed with the strength of his hand.

"I have faith in it."

Zhang Xingyang rubbed his numb shoulders and said:

"At least in terms of flight stability and range, I am confident."

"Of course, in terms of stealth, there is also enough confidence."

Dongfeng-17, what will be faced in the future is the enemy's most advanced anti-missile weapon system.

For the anti-missile system, the anti-missile process can be divided into three different stages, namely information detection, predicting the target trajectory and guiding the intercepting missile to the target, and finally intercepting the target.

Among them, the investigation stage is the premise of the latter two, and it is also the direction that everyone in the world is working hard to tackle.

Detection is mainly carried out through the infrared and electromagnetic signatures of ballistic missiles.

It is difficult to hide infrared features. After all, when flying at high speed in the atmosphere, the temperature above the projectile body may be as high as thousands of degrees!

There is simply no way to hide its infrared signature.

Unless there is a way to make it fly at high speed without generating a huge amount of heat.

But that kind of technology, even after a hundred years, is a high-end technology.

That requires the construction of a special field outside the missile body.

Therefore, the only thing that can find a way to hide is the electromagnetic signature of the missile.

In this regard, Dongfeng-17 is mainly achieved by covering the surface of the projectile with a composite stealth coating.

To reduce the electromagnetic signature that radar can detect.

In terms of stealth paint, the new paint just developed by the Materials Experiment Center under the Rocket Research Institute has excellent performance.

It can effectively reduce radar reflection by 80%.

And considering that the situation faced by ballistic missiles is more extreme, the stealth coating needs to face higher temperatures.

Under high temperature conditions, although material ablation and sublimation will occur, the weakening of the stealth coating is not so strong.

The 11-meter-high missile stands quietly on the launch pad, waiting for the launch time.

This big guy weighing fifteen tons is preparing for his first actual flight.

Although thousands of flight experiments have been completed in the YF-21 shock wave wind tunnel.

However, there is still a big difference between the simulated situation blown out of the wind tunnel and the situation that may be encountered in real flight.

The Dongfeng-17 waverider ballistic missile was originally designed to be launched by a launch vehicle, but the supporting development of the launch vehicle has not yet been completed.

Therefore, it is only possible to use this launch method, which is almost in the form of a missile well.

"When will the launch vehicle supporting the missile be developed?"

"Old chief, do you know?"

Zhang Xingyang was also curious about this matter.

After all, a good launch vehicle can also better play the performance of the missile.

"The research and development of the chassis has been completed, and the current difficulty is mainly the integration of various systems."

Mentioning this incident gave the old chief a headache.

The missile launch vehicle is different from what many people imagined. It is not just a missile launcher.

It also includes launch control system, measurement and control system, power supply and distribution system, communication system, positioning and orientation system.

After the communication system receives the launch order of the missile, it is necessary to quickly switch the launch vehicle from the driving state to the launching state, then transmit the target data to the missile computer, and then complete the rapid erection of the missile through the control system, and finally complete the launch of the missile. Launch works.

After launching the missile, the missile launch vehicle also needs to leave the launch site quickly.

Because Dongfeng-17 is a new generation of ballistic missiles, its performance indicators in all aspects are very high.

Similarly, higher requirements are put forward for the missile launch vehicle, which requires the launch vehicle to have high maneuverability, fast adjustment and erection, fast and accurate positioning and orientation, high concealment, high automation, etc.

This has led to a very slow progress in the development of the missile launch vehicle.

After all, these are technologies that automobile production units have not been exposed to before.

"If there are no accidents, it will take about two or three years to complete the research and development of the new missile launcher."

The old chief said with some helplessness.

Seeing that the progress of the missile is as fast as it is, he also hopes that the speed of the launch vehicle can be as fast as the missile.

But judging from the current situation, this can only be regarded as a luxury.

"Missile preparations are complete, please order!"

Just when Zhang Xingyang was still talking about Dongfeng-17 supporting missile launcher with the old chief.

An engineer who had just completed the missile inspection trotted over to report that the preparations for the missile before launch had been completed.

Launch work can begin immediately.

"Are the target observation station and the tracking station on the road ready?"

After hearing the other party's report, the old chief turned to look at Zhang Xingyang and asked.

"It's already ready."

The missile research and development work has been going on for nearly two years, and it is finally about to usher in the first test.

This strongest weapon that Zhang Xingyang has forged since his rebirth is finally going to show off its edge to the world! (end of this chapter)