From university lecturer to chief academician Chapter 275 Missile anti-interception experiment, complicated calculation? Wang Hao: Isn’t this very simple?
Chapter 275 Missile anti-interception experiment, complicated calculation? Wang Hao: Isn’t this very simple?
The Aerospace Industry Zone 3 Experimental Base is located in the barren mountains far away from the hustle and bustle of the city. The car drove for more than two hours before arriving at the experimental base.
A receptionist opened the car door.
Wang Hao stepped out of the car and saw a group of people walking towards him.
Walking at the front was an old man in his sixties wearing a shirt and military trousers. His hair was slightly gray but he looked energetic.
After the old man came over, he held Wang Hao's hand tightly with both hands and said enthusiastically, "Academician Wang, I have been waiting for you."
The person next to him introduced, "This is Academician Zhao Xingli, the person in charge of the third district."
Wang Hao nodded and said with a smile, "Academician Zhao, you are too polite."
After that, the people nearby helped introduce other people. Standing next to Zhao Xingli was Zheng Guofeng, the chief researcher of the 137th Institute.
Zheng Guofeng treated Wang Hao even more enthusiastically than Zhao Xingli. He took Wang Hao's hand and said excitedly, "You have greatly improved our missile interception technology!"
Wang Hao knew that his mathematical research was related to missile avoidance and interception, but he still didn't know the specific situation, so he asked, "What did you study?"
"Orbit-changing injector!" Zheng Guofeng said, "To be precise, it's called a missile anti-interception orbit-changing injector."
"We implement the anti-interception orbit change based on the mathematical scheme you provided." Zheng Guofeng said with some pride, "We have created a orbit change injector that weighs only about ten kilograms and can be installed behind the warhead.
It can play an anti-interception role when it is fifty kilometers away from the target, which is the final path of the missile."
Zheng Guofeng said and pulled him into the experimental base.
They talked while walking.
Zhao Xingli, Zheng Guofeng and Wang Hao walked at the front together, while the others followed behind and kept looking at Wang Hao, "Academician Wang Hao, you are really young. This time you can see a real person."
"I have been seeing it on the news, and I feel that he is younger than the news. He is so young, and already..."
"That's incomparable!"
"The mathematical research done by Academician Wang Hao is so valuable that he can directly design new devices!"
"Those are just a small achievement of his. I haven't seen the news saying that his latest research is on the speed of light. It would be unthinkable to explain the problem of reducing the speed of light."
"I have never seen any anti-gravity research. Their research is much more advanced than ours..."
Zhao Xingli and Zheng Guofeng in the front explained their results and the upcoming experiments to Wang Haohao.
They have created an anti-interceptor orbiting injector that can be installed on missiles.
This kind of orbit-changing injector is installed behind the missile's warhead, which is the middle part of the missile. It shares radar data with the missile and has an independent electronic system. It also has three explosive jets for temporary jet changes.
Warhead direction.
Because it is installed behind the warhead, it takes effect after the rear missile body breaks away, which is about fifty kilometers away from the ground.
"At this height, ordinary anti-missile systems cannot intercept it."
"For example, the internationally renowned patriots will not attack at an altitude exceeding 50 kilometers. Normally, it should be around 30 kilometers."
"The orbit-changing jet can share missile radar data. When it detects that an anti-missile head is approaching, a jet will erupt to change the direction."
"The next ten kilometers will be path correction, but there will be deviations..."
Zheng Guofeng shook his head helplessly as he spoke, "No matter how we correct the calculation method, there will be deviations in the path. If it is intercepted at an altitude of thirty kilometers, it will not affect the target, but the deviation will still exist and will affect the missile.
Accuracy.”
"If it is at an altitude of ten kilometers, problems may arise, because the power of a single jet after the missile rotates is sometimes weaker and sometimes stronger, and the path correction is not so accurate."
Wang Hao nodded in understanding and said, "It is normal for there to be deviations, because some of them are approximate calculations and it is impossible to completely guarantee accuracy."
Zheng Guofeng's brows relaxed a little, and he suddenly felt affirmed.
Because the experiment was conducted at 1:00 noon, Wang Hao walked around the experimental base first, visiting various facilities and the manufactured equipment.
Zhao Xingli discovered that Wang Hao was very interested in military facilities and took him thirty kilometers away to see the anti-aircraft missiles that were on standby.
He also said, "What we are planning to test is a conventional medium-range missile, and the strike direction is in the target area in the distance."
"The accuracy of the missile is already very high, and the normal deviation does not exceed twenty meters."
"But please rest assured that the missile carries an empty shell warhead, which is filled with sand and soil and will not explode. Even if there is an accident in the experiment, it will not threaten safety."
Wang Hao nodded as he listened. He was really worried about something going wrong, and a missile exploded next to him.
That would be really miserable.
It was already noon when he returned to the experimental base. Wang Hao quickly finished his lunch and it was almost time for the experiment.
He was placed on a hilltop. In the cave next to him, there were also some equipment and multiple screens, obviously dedicated to observing missile experiments.
Wang Hao stood on the top of the mountain.
Zheng Guofeng stood nearby and said, "This is about 20 kilometers away from the shooting range. The weather is very good today. If the experiment is successful and the missile is not intercepted, we will be able to see it when it falls and strikes."
"Then I'm really looking forward to it." Wang Hao said with a smile, "I've never seen a real missile strike before."
"You can see clearly this time."
After Zheng Guofeng finished speaking, he went to work. The orbit-changing jet gas was the result of Institute 137. Of course he would hope for the results of the experiment, especially since he invited Wang Hao to come and watch. Failure would be really embarrassing.
He still has some confidence.
They have conducted two experiments and achieved certain results, but the final accuracy was slightly worse.
This time I have revised the control code again, hoping that the accuracy can be improved.
soon.
The time has reached one o'clock, and the commander's shout can already be heard inside, "Get ready!"
"3,2,1..."
"emission!"
The commander issued an order to officially launch the experimental missile.
Medium-range missiles have many advantages, including rapid launch, rapid strike, and difficulty in interception. It usually only takes more than ten minutes from launch to concentration on the target.
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The missile tested this time had a flight time of only thirteen minutes.
Wang Hao has been waiting on the spot, looking into the sky from time to time. The blue sky and white clouds, coupled with the endless mountain scenery, give people a refreshing feeling.
In the constant expectation, I heard a sudden sound.
Sparks were visible to the naked eye in the distance, and the anti-aircraft missile was officially launched. The missile flew into the air with white smoke falling from its tail.
Zhao Xingli, who was standing next to him, also explained, "The anti-aircraft missile automatically warns and intercepts at an altitude of 25 kilometers, so we cannot see it."
Wang Hao felt a little regretful after hearing this.
soon.
I remembered the noisy sound in my ears. A small black dot penetrated the clouds and quickly fell to the left. But just looking at the direction of the fall, it was obviously not a shooting range.
The little black dot slowly corrected its direction, and passed high above the head. After a long time, a faint collision sound was heard from behind.
Wang Hao was completely stunned, and then felt a sense of fear in his heart.
Although the location where the missile hit was far away from me, it only passed overhead.
But it’s still very dangerous!
Zhao Xingli had already reacted. He looked at the command base with a darkened face. When he turned to Wang Hao, he was suddenly very embarrassed about the facts.
There is no doubt that the experiment failed!
The missile did complete the anti-interception work and was not hit by the anti-aircraft missile, but obviously the final hit location was even dozens of kilometers away from the target.
This can no longer be said to be a deviation, it is completely deviating from the normal track.
A group of people came over from behind.
Zheng Guofeng trotted to the front and said with an embarrassed face, "The anti-interception is successful, but I don't know why, the deviation is too big."
Zhao Xingli twitched the corner of his mouth and couldn't help but said, "Can it be said to be a deviation? Lao Zheng, this is a failure!"
"It failed, it was still a calculation problem..."
In fact, a failure is not a big deal. After all, the orbit-changing injector is a brand-new device, and it is an auxiliary device for missile anti-interception. From research and development to technological maturity, it will definitely take a long time and many experiments.
But the most important thing is that the deviation is too much. It can be said that the experiment failed, and it happened in front of Wang Hao's eyes.
Regarding this experiment, both the 137th Institute and the Aerospace Industry Zone 3 were very confident in this experiment. Because of this, they invited Wang Hao to come and watch, but the result was a huge failure.
This is the embarrassing part.
Wang Hao felt a little scared just now, but at least he is safe now. He still smiled and said, "Anyway, I saw the missile strike, so my trip was not in vain."
Zheng Guofeng suddenly became even more embarrassed.
The experiment failed.
A group of people returned to the base, discussing experimental issues on the way.
Zheng Guofeng kept saying, "It must have something to do with calculations."
"We revised the calculation method last time, but we didn't expect this problem to occur."
"The previous deviations were still a bit large. The one with the highest accuracy had a deviation of more than fifty meters. But this time it is really strange. The deviation was tens of kilometers."
Zhao Xingli emphasized again, "Old Zheng, that is no longer a deviation."
Zheng Guofeng's face turned red when he was told that, and in the end he could only utter two words, "Okay."
After returning to the experimental base, Zheng Guofeng no longer cared about the humiliation issue. He quickly talked to Wang Hao about the calculation problem.
The mathematical work done by Wang Hao pointed out a main direction route for missile correction, but when it comes to actual application, there is still a lot that needs to be calculated.
For example, jet nozzle intensity control.
The power of the jet is supported by high-pressure gas combustion, and the size of the jet determines the power produced.
In addition, the power generated by the jet nozzle is also related to the path of the missile, and also involves directional control.
The calculations involved were extremely complex, and they devoted most of their work to mathematical calculations.
These mathematical calculations need to be converted into codes, so that the electronic equipment carried by the orbit-changing injector can automatically make calculation controls based on radar data.
Zheng Guofeng pulled Wang Hao and talked about it carefully, and also wrote down their overall design and detailed calculation methods.
Wang Hao listened patiently.
He found that the most complicated and problem-prone areas were direction control and jet nozzle size control.
But the most uncertain thing is still the calculations related to missiles, which involve NS equation issues that require approximate calculations.
"Computers make approximations of equations, but sometimes the deviations may be too large."
"Our calculation method is not so rigorous, especially in direction correction, which is more prone to problems."
"This question determines the final accuracy."
"We have conducted several experiments before and concluded that the accuracy of the missile will definitely be affected."
"We hope to improve accuracy and reduce impact, but..."
Zheng Guofeng shook his head as he said, "There is still something wrong with the calculation method. It is too complicated." He felt that the explanation was not clear, so he took out a piece of white paper and wrote three sets of equations, "It's like this equation.
Automatically perform approximate calculations, and the values obtained may sometimes deviate greatly."
Wang Hao picked up the white paper and looked at the three sets of equations carefully. He was stunned for a moment and said, "This is the equation? Isn't it very simple?"
"……ah?"
Zheng Guofeng was stunned when he heard this.
Others nearby were also stunned. Automatic calculation problems similar to equations stumped Institute 137, including Institute 136, and other research institutions under the aerospace industry.
They have been troubled by this problem for several months, or even more than a year. It can be said that since they started researching, they have been troubled by the problem of automatic approximate calculation, and they are still constantly correcting the background calculation code until now.
Finally, we arrived at Wang Hao...
Very simple?
…
Wang Hao really thinks it is very simple, because it is just a system of partial differential equations.
After completing the study of NS equations, he can be said to be the best in this field, and no other scholar can compare.
Although the equation looked very complicated, the first time he saw Fang Cheng, he had already thought of several ways to do approximate calculations, and each of them had a very high degree of approximation.
In addition, he has done two computer projects with the approximate calculation of NS equations as the core, and he also knows what methods can make computer calculations closest to real solutions.
So he thought it was very simple.
Afterwards, Wang Hao gave a brief explanation and talked about several projects he had done. "Although there are differences in the equations, the calculation methods can still be used as a reference."
"I'm not sure what the best way to calculate it is, but it's not that hard to solve."
Zhao Xingli's eyes lit up and he said immediately, "Otherwise, Academician Wang, we will cooperate on the project, and you will help us design a calculation method, and we will provide the funds..."
"That's not necessary."
"Ah?" Zhao Xingli was a little confused.
Zheng Guofeng thought Wang Hao was unwilling to help, so he immediately said in a pleading tone, "Academician Wang, we have been troubled by this problem for a long time, please help..."
Wang Haodao, "Professor Zheng, you have misunderstood me. It's not that I don't want to help, but I don't need to do any projects."
"This problem is very simple. I can solve it by doing some research. There is no need to go back and figure it out."
Zheng Guofeng was stunned again.
Zhao Xingli was also stunned, "Academician Wang, are you kidding me?"
Wang Hao shook his head and said, "Can I joke about this kind of question? Otherwise, I will think about it carefully today and talk to you tomorrow morning."