Helium, navigation, and finally aluminum for airships. The volume of the airship is extremely large, which is actually the reason why Yang Rui likes airships, even if the airships rise in the future, the airships still have to be retained. This is not based on cost considerations, but also on political considerations, in other words, this is political accounting. A word that was despised in the past is now gradually affirmed by Yang Rui: there is no need to calm the people with big guys and big scenes, so that they can have a sense of national pride, which is not conducive to the unity of the country.

After Yang Rui's mind wandered slightly, his attention returned to the text in his hand, German Zhong Guan reported a kind of alloy aluminum, that is, aluminum-copper alloy, this alloy has been determined to yield strength of 275/MPa, tensile strength of 427/MPa, yield strength is slightly smaller than ordinary high-quality steel, and tensile strength is slightly larger, according to reason, the performance of this material is in line with Yang Rui's impression of Dula aluminum, but this aluminum alloy because of the addition of copper, its corrosion resistance is very poor, once applied to airships, airplanes, Then, after a long time, the body will not be stable due to corrosion.

Zhong Guanguan's report said that this alloy was originally used to make bullet shells, but because aluminum alloys are not resistant to high temperatures, the other party has given up this research. Although it is a failed research, and the results are not practical, Zhong Guanguan still wants to buy it at a low price, and then continue to study corrosion-resistant aluminum alloy on this basis.

Yang Rui originally saw the strength of the aluminum-copper alloy and went to see the name of the German who invented it, and saw that it was not called Dura. He also put it down, he still thinks that aluminum alloy, that is, Dula aluminum, should be an aluminum-magnesium alloy. Actually, he was mistaken. Or was misled by something, the aluminum he saw was the alloy called Dula aluminum in later generations, but this is the first generation of Dula aluminum, in terms of the aluminum alloy label that was used in later generations, this aluminum is called 2017, invented in 1906, because it is made in a Duler place. Coupled with the problem of pronunciation, it was later called Dula Aluminum; The aluminum-magnesium alloy in his memory is actually an appropriate amount of magnesium and other small amounts of metal added to Dura aluminum. It has become an aluminum alloy that surpasses Dura Aluminum, commonly known as Super Dura Aluminum, and the later label is 2024, which was first used in aircraft by Alcoa in 1936; And the tallest on the modern aviation aluminum 7075. It is also commonly known as superduralumin. It was still invented by Alcoa in 1943.

The discovery of dura aluminum is because its fusion process and heat treatment process are not complicated, and annealing can be done directly with cold water; The reason why ultra-dura aluminum was discovered so late is that there are a variety of strengthening phases inside the alloy, so it is very sensitive to heat treatment, and at the same time, it has extremely high purity requirements for various metals, so it did not appear until more than 20 years later; As for superduralumin, chromium metal was added to it, and because of the great progress in fusion technology and heat treatment process at that time, a high-strength and corrosion-resistant aluminum alloy was obtained.

Yang Rui, who didn't know that he had a good card, only gave instructions on the report and asked Zhong Guanguan to concentrate on studying aluminum-magnesium alloy. As for this aluminum-copper alloy now, if the price is too high. At the same time, if you can't solve the corrosion problem, then don't buy it. With the establishment of the prototype of the industrial system, Yang Rui has become more and more aware of the importance of materials, and everyone has ideas, but if the materials can't hold up, all of them will be empty. At this time, Yang Rui suddenly remembered that the School of Materials of the University in the future came, and he had a good relationship with several people in the School of Materials when he was in college, but there was nothing related to materials in the materials he brought to this world, but there was a bunch of telecommunications materials in a USB disk that had not been used for a long time, and there was a graduation thesis of a single-chip microcomputer. He couldn't remember anything about the university, but it was useless at all, or at least useless for fifty years.

When Yang Rui looked back slightly, Cheng Ying next door came over with a copy of the text. Looking at her appearance, Yang Rui shook his head slightly. One Fang Junying left, but the other who was dead came back to life.

"You're so happy, aren't you? Luckily it's not a man, otherwise I wouldn't have been able to sleep. Looking at her happy look, Yang Rui quipped.

"Why can't you sleep?" Cheng Ying also smiled, "Sister Qiu is not a man, can't she see her tomorrow?" ”

"If she's a man, I'll be relieved. At least you won't be as blatant as you are now. Yang Rui looked at her and still joked, she had been here for this matter several times, and finally looked at her pleading and said: "The injury is not healed yet, we will leave Shanghai tomorrow morning...... In this way, you can go to the hospital in the morning, but for half an hour at most. I will let Chen Guangshou supervise you, so that you won't be able to leave while chatting. ”

"Really? That's great. Cheng Ying's voice suddenly became louder, and she wanted to lean over, but she held back for a while. After many days of getting along, she understood that Yang Rui was an extremely rigid person at work, and any overstepping by others would make him feel inappropriate. Suppressing her joy, she handed over the text in her hand, and then jumped next door.

Yang Rui just shook his head when he saw her appearance, but he was also happy about it. A man who is old-fashioned, strict, mechanical, and has a tendency to workaholic should find a woman who is lively, cheerful, clever, and full of life, otherwise life will be very boring. He thought about it here, and then remembered the things that made Cheng Ying extremely happy.

In fact, it's because Qiu Jin didn't die. What Cheng Ying said to him that day was not entirely correct, Qiu Jin returned to Shaoxing that day to investigate the news, was recognized by the former officials, and stood up righteously when the Qing soldiers burned the house, but there was another person who stood up at that time, that is, her follower Yin Ruizhi also stood up and said that he was Qiu Jin. For the Qing soldiers in the tenth town, they only knew that there was a female revolutionary named Qiu Jin, but they didn't know anything about their age and appearance. In the face of the two Qiu Jin, these Fujian people couldn't tell which one it was, and the official who reported the news was just greedy for money, but he was suppressed by the anger of the surrounding people, and he finally referred to Yin Ruizhi. And the county commander of Shaoxing City had already committed suicide because of the destruction of the city by the revolutionary army and the massacre of the tenth town, and those officials were left. also hated these outsiders very much, so in the end, except for Qiu Jin herself, no one recognized her as Qiu Jin, and the Qing soldiers were eager to take revenge, so they pulled Yin Ruizhi out and killed him that night.

Then the plot is very ordinary, after the tenth town went to Yanzhou to help suppress, Qiu Jin, who was sick but not dead in prison, had an ultimatum about guò silver and relations. was redeemed as Yin Ruizhi, but because the various contact methods of the Revival Association have changed, and she herself is considered to have been sacrificed. She stayed in the countryside of Shaoxing until the New Year, and then contacted Shanghai, which was half a year after her 'sacrifice'.

Like his attitude towards Cai Yuanpei, Yang Rui didn't like Qiu Jin to come alive. For this great calamity will give them a prestige that is superior to that of a group of people, although it will be beneficial to revival. But not to his advantage. For example, the current Cai Yuanpei is somewhat like the role of Wang Jingwei before the later generations. Once the revolution succeeds, then he will have incomparable prestige when he is released from prison, and what Yang Rui wants to do in the future, if Cai Yuanpei opposes it, the resistance will be huge. Of course, there is another way to kill Cai Yuanpei now, and he did think so, but it is easy to kill people, but it is difficult to kill people openly. If it is really reluctantly killed, then the upper echelons of the Revival Society will be detached.

From a person who does not want Chen Tianhua to commit suicide. Becoming a person who thinks of a way to kill Cai Yuanpei doesn't know if this is a kind of progress or degradation for Yang Rui. Now he has abandoned the previous goodness and turned into a real villain, only evil is the driving force of historical progress, this is his unscrupulous logic.

However, the word evil is only a Hegelian word, and in another way of saying it, it means that the development of the productive forces is the driving force of historical progress. When breaking the inherent system of agricultural feudal society, unscrupulous means are in line with the logic of historical development, but when China is transformed into an industrial country, the people are fed and clothed, and the people are rich, then a new good will be established, and at this time it will be extremely evil, and even because of the earlier evil regime will be overthrown. Perhaps because of the deep history, Yang Rui found that in order to enslave a country forever, there are two things that must be done: one is long-term illiteracy, and the other is long-term abject poverty.

However, if those in power vigorously popularize education and develop the economy, then no matter how strict the control is, the final result will be the overthrow of the regime and the establishment of a system of decentralization and consultation. In other words, the centralized dynasty that Yang Rui worked so hard to build was overthrown. In the face of this ending, in the nature of Dick Si, this is what he expects, but as a person in power, this is what he opposes. He can now see that after economic development, earlier ethics and morality have been dissipated, and one generation is more selfish and selfish than the next. In the past, he despised such a society because it had no morality, but now, he does not despise it, this is the inevitability of historical development, only when everyone is selfish and selfish, the old social system will disintegrate, and then a new social system will be formed, and only the new social system will be constituted, and the corresponding civilization can be established. It is a time of replacement, first destruction and then reconstruction.

In the future, Yang Rui sees it very thoroughly, his role is a person who makes the country strong and prosperous at any cost, and the centralized government he established in order to achieve this goal will inevitably be overthrown or subverted by the people who have become independent and wise and wealthy at a certain point in the development of history; And he himself, those mistakes and unscrupulous means during his lifetime will definitely be magnified and distorted after death, and he will become a dictator who does all kinds of evil.

Thinking about a few openings, Yang Rui couldn't help but think of a certain film by Stephen Chow, and the corners of his mouth suddenly laughed. He is now very clear about his fate, and his historical role is that of a villain, so he should 'play his role well'. As for goodness, that's someone else's role, he doesn't have to care, history will let the person who plays it come out.

When Yang Rui thought of fate in Shanghai, Pan Shizhong on the airship said fate: "I'm afraid of a ball, death is fate!" …… Quick, empty the airbags! ”

"Empty! Empty! It's all empty! The crew in charge of the auxiliary airbag shouted, and his words were very panicked.

"Counterweights! Counterweights! Pan Shizhong shouted again.

"Throwing, throwing......" another voice said, "help." We're here to help. He finally screamed. As soon as he said help, someone rushed over and pushed the 30-kilogram sandbags out of the boat. However, this is clearly not in accordance with the protocol. The previous voice questioned again: "You have to count, otherwise who knows how many bags are thrown." ”

The voice of the counterweight reached Pan Shizhong's ears, he would definitely stop such a brutal act before, but now his heart is on whether the airship can rise, if it can't rise, it will definitely hit the mountain, because now it is enough for the tip of the tree. Watching the airship descend was only slightly slowed down. He even shouted, "All counterweights are emptied!" ”

A few people cleared all the sandbags that were configured, and these sandbags went down at once. Everyone could feel the airship rise violently, and the height above the ground was no longer twenty or thirty meters, but rose to nearly a hundred meters. However, just when everyone thought they could breathe a sigh of relief, the lookout in front shouted again: "There is a mountain ahead." There are mountains ahead! ”

As soon as I heard that there was a mountain ahead. The crew in charge of operating the directional steel rope moved. However, before they could tighten the tightrope, the lookout in front of them said, "It's less than a thousand meters away, and it's too late to turn." ”

As soon as he said this, he had no strength to pull the tightrope for a few days, and the people in the airship looked at Pan Shizhong's position for a while, and they couldn't see his face clearly in the dark, but they only heard his voice: "Throw the goods!" ”

"You can't throw the goods...... "There was a voice uncertain.

"Throw!" Pan Shizhong said again, no longer waiting for everyone's reaction. Rush to the cargo compartment and find a place to put the bullet. Start throwing the box down. Then he looked back at the overwhelmed man: "Hurry up and do it!" ”

As if they had finally figured it out, the rest of the people rushed over and threw boxes of bullets down. It wasn't until the last lookout shouted to stop that everyone stopped. It's just that at this time, everyone was exhausted and panting by the successive accidents, and they all sat on the floor panting. First it flew and flew and suddenly sank, and then the terrain became higher and higher, and the pod was about to touch the tree, and then it encountered a high mountain, and threw a lot of cargo down. Now it's finally safe, and this flight is really scary.

"How many fires?" After panting sharply, Pan Shizhong asked with his breath suppressed.

"Should... It should be twenty-four, no, twenty-five...... It's almost there anyway. "Someone in the dark.

"Just remember." Pan Shizhong said. With that, he stood up. "Let's go back to our respective posts. I'll write a report to the top about throwing the goods. ”

The captain took everyone to escape death, and now he has taken the responsibility again, and everyone knows it in their hearts, but it is difficult to say anything, just return to their respective posts, and fulfill their duties to seek peace in the end. Everyone else was in place, only the vice president didn't leave, he was the same as Pan Shizhong, his whole body was soaked with sweat, after a short rest, he was no longer out of breath, and his body was also a little cold, but he still couldn't figure out what happened just now, so he half-hesitantly whispered: "It won't be the offended mountain god and land lord, right?" ”

"Nothing." Although Pan Shizhong retorted, his words were not harsh, he was also thinking about the reason for the sudden sinking of the airship just now, "The air flow in the mountains is different from that in the plain land, especially where there is a stream, even more so, the solar heat absorbed during the day will be absorbed by the water and then taken away, making the surrounding temperature lower." ”

"But once the temperature gets lower, then the density of the air increases, and the density of the air increases, so the weight of the volume of gas discharged by the airship increases, and we should be ......," the deputy captain said here, feeling as if he had said something wrong.

"You can't always count the air, the temperature drops will also reduce the volume of hydrogen in the airbag, which is why the airship flies lower at night than during the day." When Pan Shizhong pointed out the mistake of the deputy captain, he thought of his own mistake again, and said: "It seems that the color of the airship will be changed in the future?" ”

"How do you change the color?" The deputy captain asked, as more and more students from the military academy came from the countryside, it seemed that the number of cadets was declining, and many of them had not systematically studied physics and chemistry.

"Before, considering the high temperature during the day, I made the airship white, but the temperature is low at night, so it is better to be black, so it is better to absorb heat...... No, it should be two colors, the top half is white, the bottom half is black, that's right. This distress experience made Pan Shizhong think of a detail that could be improved, and since then, white on the top and black on the bottom has become the standard color of the airship.

As a new piece of equipment, there are always countless faults and details that need to be changed when starting to use it, which is a concept emphasized earlier in the training of airship crews. In addition to flying safely, they also have a priority to improve the performance and operation of the airship in flight, so that the airships behind them can avoid similar problems. Pan Shizhong thought of this. Then he got up and went to write the logbook, this time he had not encountered before, he had to summarize it well, and the place where the airship suddenly fell, in addition to sending someone to recover the bullets, he also had to study whether it belonged to the abnormal temperature area as he guessed.

The twenty-fifth fire. In fact, it means that he has walked 250 kilometers, and it has been a long time since Pan Shizhong finished writing his diary, and the lookout in front of him reported: "I saw Jin Zijian." ”

Pan Shizhong listened. Picking up the hanging telescope and looking ahead, indeed, there were three cross fires in the direction of eleven o'clock. This is consistent with the landmark characteristics given by Yanzhou.

"Send a signal, notify them." Pan Shizhong put down the binoculars and said. The half-hung heart finally fell.

The signal lights on the airship flickered and flickered. Let the few soldiers stationed on the golden purple tip be happy, this is the content explained by the superiors, while sending a telegram to the landing site and headquarters, several big-headed soldiers looked at the flashing lights of the black shadows in the air, and then listened to the roar of the gasoline engine that was getting closer and closer in the airship, and stared at each other with big eyes, panicked. Although the platoon commander who led the team was also panicked, he thought about the explanation of his superiors. I had to pretend to be calm and said: "No one is allowed to shout nonsense, if anyone speaks." Military disposition. ”

The airship sideways around the golden purple tip, and on this faintly moonlit night, its massive body was just a black shadow, and the black shadow continued south, and after a while, it was the landing field. At this time, Zhou Yawei, who received the news, not only lit the lights in the landing field, but also turned on the top of the hill next to the landing field. He was thinking about why he wanted to be like this, when the rumbling motor sound came from far and near, a huge shadow flew from the sky, only covering half of the sky, and when the underground soldiers were stunned, Zhou Yawei was also startled by such a thing, this is the supply that the governor said?

When Zhou Yawei and his group were stunned, the airship was emitting light signals to the ground according to the regulations, looking at the lights flashing and flashing, Zhou Yawei came back to his senses, and he hurriedly said: "Quick!" Signal, permission to land! ”

The landing site was busy, and so was the airship. First, the auxiliary airbag opened, and two electric blowers vigorously puffed air into it, and then a group of people were working together to bolt the buffer belt and high-pressure gas cylinder to the cable, ready to put it down. The cushion bag is actually an airbag with sufficient air, which allows the airship to land without touching solid ground, so as to avoid shocks and vibrations to the entire airship structure. But then the problem arose, because too much weight had been thrown away before, and the height of the airship was more than 120 meters above the ground, even if the auxiliary airbag was almost full, but the cable of 80 meters was completely not enough to mooring the tower.

"What should I do?" The deputy captain looked at Pan Shizhong, and his face began to sweat again.

"Only a portion of the hydrogen can be discharged. We don't have anything to pack when we go back, and it's okay to have less hydrogen. Before landing, Pan Shizhong thought that the loss of counterweight would make the landing difficult, but he didn't expect that this was really the case.

"Good! That's all there is to it. The co-captain nodded. And then it's done.

After sending a rigorous fireworks signal to the surface, the horse lights at the landing site were extinguished, only the four battery-powered electric lights were still faintly on, with the discharge of hydrogen, the height of the airship dropped little by little, and when the cable could reach the height that the cable could reach, the buffer bag and high-pressure gas cylinder had been put down, and the rest was for the crew to inflate the buffer bag.

Lin Wenqian had been waiting for the arrival of the airship, and as soon as he received the news of the arrival of the guests, he turned over and got up, he slept in his clothes, and went out with only a pair of shoes. When he arrived at the landing site, there were two behemoths on the ground and in the sky, which made him, who already knew about the airship, stunned.

At this time, the airship had descended to a height of fifty meters, and the huge hull was descending little by little, which made the landing field that usually felt wide suddenly extremely cramped. With the trumpets of more than a hundred soldiers on the ground, the pod finally reached the buffer bag, and there was a loud bang, as if something had slapped on the water, and the airship landed.

At the same time as the weight was added to the pod, the cargo in the pod was also removed. Watching boxes of ammunition moved out of the pod, Zhou Yawei wanted to cry excitedly, this is the supply. Zhou Yawei was excited, while Pan Shizhong was dignified, and he wanted to find the local governor immediately, so that they could go fifty kilometers to the north to search for the ammunition that had been dropped. "I'm looking for your supreme commander. I'm in a hurry! He shouted from the crowd. (To be continued......)