[Chapter 182] Naturally, what Si Qing said was right. The people sent by Major Zhao were indeed very efficient. Just as Si Qing and Du Jin finished preparing everything, there was a knock on the door of the lounge. Si Qing immediately confirmed that this was not her person, otherwise such irregular knocking sounds would not have been possible, but she was not nervous because the soldiers arranged nearby had informed her that the accompanying personnel from the Scientific Research Department had entered the library. pavilion.
Then she nodded towards Du Jin, signaling Du Jin not to be too nervous, and then turned the doorknob to open the wooden door. The next second, a tall figure appeared in front of the two of them, dark green. Military uniform is an improved type
Although the "casual style" lacks a bit of military heroism and solemnity, the wearer looks approachable, especially it is not so eye-catching in the crowd and seems to blend in more.
"Captain Si, Mr. Du, hello! Please come with me!" After seeing the two people in the room, a calm and low voice came to Du Jin's ears. Only then did he realize that this person was a woman. Previously, because the upper part of his face was blocked by the brim of his hat, Du Jin thought the other person was a relatively thin man based on his temperament and height. Of course, Du Jin was just a little surprised and didn't go into too much detail. He just clicked immediately. Nod to indicate no problem.
Si Qing was not as serious as Du Jin. She obviously knew this woman and the relationship between them was much better. She smiled and nodded, then leaned close to the woman and whispered: "Sister Xinya, no When I thought that Major Zhao would send you this time, I thought it was Bin Rui, the Thunder Lord?" The other party coughed slightly and looked at Si Qing with some reproach, but from the side of Du Jin, this seemingly reproachful The look in her eyes was as if it was a friend's joke before, and there was no real blame. Then the serious lips of the woman whom Si Qing called Sister Xinya had a smile. She first looked at Du Jin , Du Jin immediately turned his head away, pretending to check whether he had brought all the things he had been testing for a while, although what was really useful was just a computer, and no serious inspection was needed.
The woman didn't pay much attention to Du Jin's somewhat poor acting skills. Seeing that Du Jin had averted his eyes before, she slightly lowered her head and approached Si Qing's face, and said with concern in her words: "You, you, what if I let you Section Chief Bin knows that if you speak ill of him like this, your quota will be blocked again, why don't you restrain yourself?"
"Aren't you the only one here?" The woman then glanced at Du Jin. Si Qing noticed this move and explained in a gentle tone: "Sister Xinya, this is my boyfriend... ...Well, you can also say that he is my fiancé. Don't worry about him. What Major Zhao needs this time was also made by Du Jin. His ability is no worse than those who brag about themselves. There is no comparison. necessary.”
"Okay, my dear, let's make a private decision for the rest of our lives without saying a word. That's all. I'll help you check it later, and that's your father... Oh, forget it, you Don’t think too much about it yet, things will get better and people will always change.”
"Hmm..." Then the woman straightened her body again, and the smile and gentleness on her face were replaced by a serious "business face". Then he said: "Now that you two are ready, let's set off!" When Du Jin followed Si Qing out of the lounge, he realized that the library that was originally crowded with people now seemed a little empty and quiet, with people coming and going. There were very few people there, although there were still quite a few people sitting in the borrowing area in the center of the hall.
"Student", but Du Jin felt very strange, especially when one of the bearded uncles was sitting at the table and reading a philosophy book. Du Jin felt a little speechless and funny: "Please, uncle, you are like this" I'm afraid the student's outfit is not very similar to your temperament..." The complaints were complaints, but he could clearly tell that the security level this time was higher than before. More than one level, this is what Du Jin wants to see the most. Although Du Jin has the bug of time travel and super recovery ability, as long as the injuries and attacks are not fatal on the spot, he can be treated in the blood seal world, even for minor injuries. You can directly recover through your own self-healing ability. He has tried it before. After cutting his skin with a sharp object, the scarring process was completed within a minute. In a few minutes, the previous wound will become a scar. Relatively superficial scars.
Although this kind of recovery speed doesn't sound like a big deal, when it comes to Du Jin's strongest body reorganization ability, whether it is wounds, bleeding or organ damage, the regeneration speed of his own cells is very fast, and the connotation of self-healing power is In addition to the commonly known immunity against pathogenic microorganisms, there are also rejection abilities, repair abilities, endocrine regulation abilities, and stress abilities, specifically including the connection of broken bones, self-repair or regeneration of mucous membranes, skin and muscles. and soft tissue healing.
The simplest example is that viruses develop drug resistance and survive repeated attacks by antibiotics, which is a typical manifestation of the lowest level of self-healing ability. Humans achieve recovery by significantly enhancing the function of stem cells and then relying on their own ability to kill tumor cells. It is a typical manifestation of high-level self-healing ability...
. . . . . . . . . . If these aspects are taken into consideration, Du Jin can definitely be regarded as an emerging human being now, not to mention that the enhanced physical fitness he has seen is much stronger than that of ordinary humans.
. . . . . . . . . . . . . . In short, Du Jin still hopes that the environment he is in is as safe as possible. No matter how many life-saving methods he has, he still has to bear the pain by himself when he is injured. Du Jin knows this very well. Needless to say, the feeling of near-death was really unforgettable for him. If it happened again, he didn't know if he could hold on.
After leaving the library, Du Jin keenly discovered that the direction the woman was leading was not the school gate, but the training ground specially used for training and special driving: "Huh? Don't you want to take a car? Is it some secret underground transportation network, or Planes or something? Forget it, the last time I used a convoy, I was almost killed by the M country agent. No matter what method, it is much safer than a regular convoy." After a while, Du Jin confirmed his guess, A helicopter and two heavily armed soldiers appeared on the tarmac next to the training ground. When he saw the military helicopter, his first reaction was to consider whether the helicopter was too conspicuous in Wanglong City. It is more dangerous than the convoy. If he is on the ground, he still has a chance of escaping. But if there is an air crash, let alone the risk of crashing at high altitude. If there is a subsequent explosion, it will be the most fatal. And Si Qing wants to be with him, Du Jin can travel through time, but Si Qing cannot.
Si Qing naturally noticed Du Jin's frown. She naturally knew the reason for Du Jin's frown at this time. After all, Du Jin was almost attacked and killed on the way not long ago. Although it would not cause ptsd, the worry is unavoidable. Yes, so she gently grabbed Du Jin's arm and comforted: "It's okay, Xiao Jin, the security is very thorough this time, and the situation won't happen last time." Du Jin nodded, followed the woman and Si Qing stepped forward and sat down in the passenger compartment of the helicopter. After closing the door and putting on the sound-isolating headphones, the propellers began to rotate, and the entire cabin began to vibrate. A quarter of an hour later, a centrifugal force and a sense of floating appeared. Du Jin had already taken off, but what surprised him was that this was different from the helicopter he had affected before.
The "noise" was a little different. Although it was not non-existent, he now found very intuitively that the helicopter didn't seem to make much noise.
Generally speaking, through the mechanical structure, the noise during helicopter flight mainly comes from three sources: 1.
The sound of the rotor breaking through the air is the biggest source of noise. It's like the whooshing sound you make when you swing a stick, except that the helicopter's rotors are long and fast, and there are several sets of them.
The size of the air-breaking sound mainly depends on the air resistance, and the resistance is mainly the induced drag of the rotor, which is caused by the angle of attack of the wing surface, that is, the greater the pitch, the greater the noise. Secondly, it is the wing tip vortex, and the high-speed movement of the rotor tip will cause The wingtip vortices are generated, causing vibrations on the following blades, thereby producing noise.
The second point is the operating noise of the engine itself. Needless to say, the vibration and exhaust pulse of the reciprocating motion of the piston engine, as well as the opening and closing of the valves, gears and chains are simply a symphony scene. If you listen to the model aircraft oil Straight, and some light helicopters that still use piston engines, the noise of the engine even covers the sound of the rotor breaking through the air. Fortunately, it has been replaced by turbines in large numbers. The noise of turbines is mainly caused by bearings and gears, and they are relatively quiet. too much.
The third factor is naturally the noise from the tail rotor. The size of the tail rotor is not small, and the rotation speed is still high. It will also produce air-breaking noise. The rest is some operational skills. For example, in level flight, acceleration is quieter than deceleration. , flying straight is quieter than turning.
When descending, flying straight is quieter than turning, and a steep descent is quieter than a gentle descent. When it's time to slow down, deceleration from level flight is quieter than deceleration from descent or a turn.
When encountering a turn, especially slow down and turn, turning from the forward blade is quieter than turning to the forward blade.
During normal operation, smooth and gentle operation is quieter than fast and rough operation. As for the method of reducing noise, Du Jin also knows something about the five-blade rotor and the five-blade tail rotor. This is consistent with the noise reduction principle of submarine propellers. Odd-numbered blades, because the blades are completely symmetrical, there will be two blades at the same time. Across the fuselage, the following two situations will occur: 1.
Noise intensity doubled: 2. The frequency of the noise is lower and it travels farther. In order to avoid this situation, the most direct way is to make the number of blades an odd number. Of course, this will increase the weight and sacrifice part of the performance.
Or it is the special shape of the wing tip, that is, the shape of the wing tip is swept back and downward. The wing tip sweep angle is a popular noise reduction measure nowadays. The wing tip is the part with the highest linear speed. At high speeds, the drag will be reduced. Soaring, as mentioned earlier, drag is the source of noise, so most of the helicopter rotor noise comes from the outer ring of the rotor. The sweep angle can effectively reduce air resistance and reduce noise.
Another common method is to add trim tabs, that is, to add trim tabs to the blade tail protruding from the rear edge of the rotor.
It is the piece that protrudes from the rear edge of the rotor. The principle of this adjustment is that the piece is driven by piezoelectric ceramics, which can change the instantaneous lift coefficient of the blade.
, causing the blades to swing and actively avoid the wingtip vortex of the previous blade, thereby achieving the purpose of noise reduction.
Of course, the specific method used requires close observation. It is best to get the prototype design or structural diagram of the model. Du Jin is just guessing, but he doesn't mind knowing something in advance, and then getting similar results in the world of blood seal. Technology expansion, anyway, one of Du Jin's worries: the noise problem seems to have been solved, and he is not airsick. Looking at the scenery and city flying by outside the window, more than ten minutes later, the helicopter landed in a military camp on the outskirts of the city. landed on the tarmac, but he did not need to leave the cabin.
The tarmac vibrated slightly, and then the helicopter began to descend slowly. After a few minutes, the dim descent channel was replaced by bright and even dazzling lights. Fortunately, it was not difficult for Du Jin to adapt to this change. After leaving the plane, that A lady whom Si Qing called Xin Ya brought Du Jin and Si Qing to a living room and asked them to wait for a while.
A few minutes later, an officer in formal uniform opened the door of the living room and walked in. Si Qing stood up first, and Du Jin also stood up. The officer was the first to speak: "Captain Si, Mr. Du, thank you for your hard work." Please make a trip. Please understand that we don't have time to explain too much. There are some special circumstances now, and we need to immediately try to see if the adaptability of the program is reliable." Si Qing thought for a moment and said, "Major Zhao, is from country m. The unmanned reconnaissance aircraft has appeared again." Major Zhao nodded, expressing his disapproval of Si Qing's guess.
"Approved", but did not say anything more. Instead, he asked three scientific researchers wearing white research methods behind him to take the computer and the USB flash drive used to record the program code from Du Jin's hand, and then the two of them followed Major Zhao's guidance. , passed through several isolation doors requiring biometric information recognition and manual verification, and finally arrived at a large command room. Through the observation window in the center of the command room, you can see a silver-gray drone. Stopped there quietly.
"Is this the Xiaolong prototype?" Du Jin asked Si Qing curiously. Si Qing looked at it and replied: "It should be an improved model produced afterward. After all, the prototype is just a backup. The sealed models will generally not be used in actual combat missions."
"oh oh!". . . . . . . . . . . . . . . . . . . . . . While the two were waiting in the command hall, in a technical room opposite the command hall, more than a dozen researchers were busy debugging various data and parameters on their respective test benches. One of the technicians was debugging after finishing the debugging. After a set of parameters, he helplessly said to the anxiously waiting boss at the front: "Director, the data of the No. 7 test group still cannot be adapted to the main system, and there are also many bugs in functional adjustment. It will cost a lot to repair. It’s been too long.”
"It is definitely too late to repair it now. We are about to carry out the external drive mission." A researcher on the side said, from the center of his head, there was
Judging from the "dry" Mediterranean, he is undoubtedly a strong technical player.
"Who says it's not the case? It is unreasonable for the section chief to ask relevant personnel from other departments or even other units to participate in the adaptation and adjustment work. He relies on problem fragments to write and modify, and there is no way to pair and adjust with the main system in real time. Who wants to If I could write it down, I would stay away from home for three years and live in the research center."
"Ahem, no wonder you're still here after hanging around for so long. I think it's because you're so unforgiving."
"Harm! Everything I tell you is the truth, and you are the same, aren't you? My Dr. Hui!"
"you..................."
"Okay! Everyone, be quiet!" The director in front interrupted the conversation of several technicians at the right time. Looking at the crowds of people in the command room opposite, he couldn't help but said sincerely: "The section chief naturally has his own considerations. Brainstorming is the way to quickly solve problems. Instead of complaining here, quickly find ways to adjust and adapt the programs that caused problems before. Now
"Fierce Dragon" is about to start its external drive mission, and you still have the nerve to shout here. "
"But Director... We have tried our best. After all, these new problems can only be solved through practice. They are completely beyond our expectations. If we are given a few days, we will I have to do it even if I work overtime without sleeping, but now it’s only ten minutes, it’s really..." Listening to the technician’s helpless excuse, the director opened his mouth but He didn't say anything. After all, he was also involved in programming. Naturally, he knew that theory and practice are two different concepts. It is indeed difficult to fix problems in such a short time. At this time, he suddenly thought of the report from the laboratory department just now. , so he said with a glimmer of hope in his heart: "There is still a chance. Just now, the laboratory department said that there is still a latest debugging version. After the safety inspection and completeness comparison are completed over there, it will be sent here. It will not be possible by then. Let Xiaolong’s sonar detection and other unnecessary functions be blocked to reduce the system load as much as possible, and everything should be focused on this mission.”,
"Is it another adaptation system designed by other scientific research units based on fragments? Alas! I hope it is really useful. Thank God for not asking more questions than the previous tests. By the way, director, who is the senior who designed the programs? Let us be mentally prepared. It will take time to block other functional modules. It seems that we need to be prepared on both sides."
"The author is... Captain Si Qingsi of the 176th Tank Brigade Technical Department, and uh... Du, an undergraduate student at the Xiaguo National Defense Military Academy Jin." The director looked at the list in his hand and read it out helplessly, while the reaction of the remaining technicians was even more pessimistic. After all, even the network technology experts and system development experts of the Academy of Sciences could not write a fully adapted list. Program for adaptation, a brigade-level technical officer, and an undergraduate student.
. . . . . . . . . . . . . . . . . . . . No matter how you think about it, there is little hope. It can only be said to be a psychological comfort, maybe it can be done?
But this probability is actually a bit subtle. At this time, the electric door of the technical room slid open, and a scientific researcher walked in and handed the director a safe box. After the director signed the information form, he quickly left without stopping for a moment. In fact, there was no need to ask this scientific researcher. The technicians can also guess that Xiaolong has not completely solved the adaptation problem. After all, this can be seen from the scope of the technical room and the expressions on the faces of the technicians. Even the director of the technical room has a gloomy face.
The brow is not raised.
"Come on!" The errand boy in the laboratory department could only cheer for these people in his heart. After all, as the direct technical management team of the Xiaolong project, if there is a problem with Xiaolong and he cannot be launched into the air to perform the mission, or if something goes wrong during the mission, If there is a major problem, then the future of these people can only be said to be very slim and dark.
Looking at the storage box in his hand, the director opened it and took out the storage USB disk with the laboratory examination standards printed on it. He handed it to the technician nearest him with some helplessness. The look in his eyes was completely like a dead horse treating a living doctor. This person The director seemed to see a dark future in which he would be assigned to other unpopular and remote departments.
The technician had a similar idea. He inserted the USB flash drive into the designated secure data port and looked up at the other technicians. He saw that the rest of them were busy with function shielding. Function shielding means performance. missing, although it can be achieved through this
The "tear down the east wall to make up for the west wall" method reduces the load of the system and improves the fault tolerance rate of the main functions. However, after all, it is missing a lot of functions. If it encounters some relatively rare situations, then the fate of Xiaolong will be a bit difficult to predict. After all, battlefield reconnaissance cannot be compared with experimental simulations. Many of the problems that arise are caused by the complex environment and cannot be predicted by humans.
But as the technician moved the programs and code instructions in the USB flash drive into the main system, the imagined incompatibility error did not appear. The execution table rows continued to run without any errors, and everything seemed to be natural. , which made this technician who was quite strict about procedures a little stunned. To be honest, he had never seen this kind of textbook-level process operation, not many times.
. . . . . . . . . . . It’s also in the textbook and training videos. The director, who was originally waiting for the technician next to him to complain and wail as before, found that the voice he imagined did not appear. A flash of surprise flashed in his heart, and he immediately opened his eyes and approached the technician and asked: "What's going on?" How is it? How far can it be adapted? Can it complete the operation of basic data rows?"
